kopia lustrzana https://github.com/miguelvaca/vk3cpu
1126 wiersze
56 KiB
HTML
1126 wiersze
56 KiB
HTML
<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>VK3CPU Magloop Calculator</title>
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<link rel="stylesheet" href="magloop.css">
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</head>
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<body>
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<header>Miguel <a href="mailto:vk3cpu@gmail.com">VK3CPU</a> - Magloop Antenna Calculator V3</header>
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<section class="gridLayoutClass">
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<div class="chart-container" style="position: relative;">
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<canvas id="chartCanvas" class="chartCanvasClass">
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2D Chart Canvas
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</canvas>
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</div>
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<div class="slider_container">
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<div class="sliders">
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<label for="conductor_diameter_slider">⌀a:</label>
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<input type="range" id="conductor_diameter_slider" min="5" max="40" value="19" step="0.2">
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</div>
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<div class="sliders">
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<label for="loop_diameter_slider">⌀b:</label>
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<input type="range" id="loop_diameter_slider" min="0.2" max="5.0" value="1.0" step="0.01">
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</div>
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<div class="sliders">
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<label for="loop_turns_slider">N:</label>
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<input type="range" id="loop_turns_slider" min="1" max="8" value="1.0" step="1.0">
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</div>
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<div class="sliders">
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<label for="loop_spacing_slider">c/a:</label>
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<input type="range" id="loop_spacing_slider" min="1.1" max="4.0" value="2.0" step="0.01">
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</div>
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<div class="sliders">
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<label for="transmit_power_slider">Tx:</label>
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<input type="range" id="transmit_power_slider" min="5" max="1500" value="100" step="5">
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</div>
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<div class="radios">
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<label>Metric</label>
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<input type="radio" name="unit_radio" id="metric_radio" value="metric" checked/>
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<label>Imperial</label>
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<input type="radio" name="unit_radio" id="imperial_radio" value="imperial"/>
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<label>Cu</label>
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<input type="radio" name="metal_radio" id="copper_radio" value="copper" checked/>
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<label>Al</label>
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<input type="radio" name="metal_radio" id="aluminium_radio" value="aluminium"/>
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</div>
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</div>
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<div id="antenna-front-container" class="antennaFront-container" style="position: relative;">
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<canvas id="antennaFront2D" class="antennaFrontClass" width="150" height="150">
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</canvas>
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</div>
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<div id="antenna-side-container" class="antennaSide-container" style="position: relative;">
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<canvas id="antennaSide2D" class="antennaSideClass" width="150" height="150">
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</canvas>
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</div>
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<div class="notes">
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<b><u>Notes:</u></b><br>
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The Magloop Antenna Calculator was developed to predict the characteristics of a small-loop (aka "magnetic loop" or "magloop")
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antenna, given physical dimensions entered via slider widgets. It assumes the main loop is made from a round
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anodised copper or aluminium conductor. I developed this multi-turn capable magloop calculator to take advantage of the
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touch-screens and high-speed of modern mobile phones, to allow users to get realtime feedback of the predicted
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behaviour of a magloop antenna. This would help a radio amateur to decide on the characteristics for the build. <br>-- 73 de VK3CPU<br><br>
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<u>Inputs via the slider and radio widgets:</u>
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<ul>
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<li>⌀a : Conductor diameter in millimeters (mm) or inches (").</li>
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<li>⌀b : Loop diameter in meters (m) or feet (').</li>
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<li>N : Number of turns or loops.</li>
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<li>c/a : is the spacing ratio; based on 'c' being the inter-winding spacing for multi-turn loops measured between conductor centers, and 'a' is the conductor diameter. (Must be >= 1.1)
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A low-value will increase the resistance due to the proximity effect.</li>
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<li>Tx : The transmit power in Watts. This affects the predicted voltage across the capacitor (Vcap), and the RMS loop current (Ia).</li>
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<li>Metric or Imperial : selects the measuring system.</li>
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<li>Cu or Al : selects the type of metal conductor (annealed copper or aluminum).</li>
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</ul>
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<u>Calculated parameters:</u>
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<ul>
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<li>L : Inductance in microhenries.</li>
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<li>A : Loop area in square meters or square feet.</li>
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<li>C : Effective capacitance for multi-turn loops in picofarads.</li>
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<li>circ : Circumference of the main loop in meters or feet.</li>
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<li>c : Distance between windings, measured from the conductor centers in mm or inches.</li>
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<li>cond : Total conductor length in meters or feet.</li>
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<li>Tuning Cap (pF): The capacitance required to bring the loop into resonance at the given frequency. Value in picofarads.</li>
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<li>Vcap (kV): The predicted voltage across the capacitance given the desired transmit power.</li>
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<li>BW (kHz): The predicted 3dB bandwidth of the magloop antenna. This is calculated from the predicted Q and the center frequency.</li>
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<li>Efficiency (%): Calculated from the radiation resistance divided by the sum of radiation resistance and the loss resistance.</li>
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<li>R-radiation (Ω): The calculated radiation resistance of the loop in ohms.</li>
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<li>R-loss (Ω): The calculated loss resistance of the loop in ohms, due to the combination of material conductance, skin-effect and proximity effects.</li>
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<li>Reactance (jΩ): The inductive reactance of the loop in ohms.</li>
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<li>Q : The quality factor, which is the reactance divided by the resistance of the loop at that frequency.</li>
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<li>Ia (A): The RMS loop current in amps.</li>
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</ul>
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Formula used for calculations:<br>
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<img src="MagloopSingleTurnInductance.png" alt="magloop single-turn antenna inductance"><br>
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<img src="MagloopMultiTurnInductance.png" alt="magloop multi-turn antenna inductance"><br>
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<img src="MagloopLossResistance.png" alt="magloop multi-turn loss resistance"><br>
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<img src="MagloopSurfaceResistance.png" alt="magloop surface resistance of conductor"><br>
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<img src="MagloopRadiationResistance.png" alt="multi-turn magloop radiation resistance"><br>
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<img src="MagloopEfficiency.png" alt="magloop antenna efficiency"><br>
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<img src="MagloopQ.png" alt="magloop antenna Q factor"><br>
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<br>
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</div>
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</section>
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<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.9.3/Chart.min.js"></script>
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<script src="https://cdn.jsdelivr.net/npm/chartjs-plugin-crosshair@1.1.2"></script>
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<script>
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var frequencies = [];
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var loop_diameter_slider = document.getElementById("loop_diameter_slider");
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var conductor_diameter_slider = document.getElementById("conductor_diameter_slider");
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var loop_turns_slider = document.getElementById("loop_turns_slider");
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var loop_spacing_slider = document.getElementById("loop_spacing_slider");
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var transmit_power_slider = document.getElementById("transmit_power_slider");
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var metric_radio = document.getElementById("metric_radio");
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var imperial_radio = document.getElementById("imperial_radio");
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var units = "metric";
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var conductivity = 58e6; // Default is annealed copper
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function updateFrequencies() {
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const hamFrequencies = [
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0.1365, 0.475, 1.8, 3.5, 5.0, 7.0, 10.1, 14.0, 18.068, 21.0, 24.89, 28.0, 29.7, 35.0, 40.0, 45.0, 50.0, 52.0, 54.0
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];
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// Max frequency is for multi-turn loops:
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var max_freq = calculateSRF();
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frequencies = [];
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hamFrequencies.forEach(freq => {
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const wavelength = 3e8 / (freq * 1e6);
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const l = (Math.PI * loop_diameter_slider.value) / wavelength;
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if ((l <= 0.30) && ((freq * 1e6) < max_freq)) {
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frequencies.push(freq);
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}
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});
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}
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// Update the frequencies, now that we have the sliders available:
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updateFrequencies();
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// Calculate the inductance of the coil. For single turn loops, use standard inductance equation. For multi-turn, use Nagaoka correction.
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function getInductance() {
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const mu0 = Math.PI * 4e-7;
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const loop_diameter_meters = loop_diameter_slider.value;
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const cond_diameter_meters = conductor_diameter_slider.value * 1e-3;
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const spacing_ratio = loop_spacing_slider.value;
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const loop_turns = loop_turns_slider.value;
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const a_coil_radius = loop_diameter_meters * 0.5;
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const coil_length = cond_diameter_meters * spacing_ratio * loop_turns;
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var retval = 0.0;
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if(loop_turns > 1) {
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retval = (loop_turns**2.0) * mu0 * Math.PI * (a_coil_radius**2.0) * nagaokaCoefficient() / coil_length;
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} else {
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const b_conductor_radius = cond_diameter_meters * 0.5;
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retval = mu0 * a_coil_radius * (Math.log(8.0 * a_coil_radius / b_conductor_radius) - 2.0);
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}
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return retval; // In Henries
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}
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function radiationResistance(frequency) {
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const n_turns = loop_turns_slider.value;
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const k = 20.0 * (Math.PI ** 2.0);
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const wavelength = 3e8 / frequency;
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const l = (Math.PI * loop_diameter_slider.value) / wavelength;
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const rr = (n_turns ** 2.0) * k * (l ** 4.0);
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return rr;
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}
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function calculateRadiationResistance() {
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var retval = [];
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frequencies.forEach(freq => {
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const rr = radiationResistance(freq * 1e6);
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retval.push({x:freq, y:rr});
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});
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return retval;
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}
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function inductiveReactance(frequency) {
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const inductance = getInductance();
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const reactance = 2.0 * Math.PI * frequency * inductance;
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return reactance;
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}
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function calculateInductiveReactance() {
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var retval = [];
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frequencies.forEach(freq => {
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const reactance = inductiveReactance(freq * 1e6);
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retval.push({x:freq, y:reactance});
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});
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return retval;
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}
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function nagaokaCoefficient() {
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// From Knight's 2016 paper on coil self-resonance, attributed to Wheeler's 1982 eqn as modified by Bob Weaver
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var retval;
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const c_spacing = 1e-3 * loop_spacing_slider.value * conductor_diameter_slider.value;
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const x = loop_diameter_slider.value / (c_spacing * loop_turns_slider.value);
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const zk = 2.0 / (Math.PI * x);
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const k0 = 1.0 / (Math.log(8.0 / Math.PI) - 0.5);
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const k2 = 24.0 / (3.0 * Math.PI**2 - 16.0);
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const w = -0.47 / (0.755 + x)**1.44;
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const p = k0 + 3.437/x + k2/x**2 + w;
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retval = zk * (Math.log(1 + 1/zk) + 1/p);
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return retval;
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}
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function ctdw(ff, ei, ex) {
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// From Knight's 2016 paper
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const kL = nagaokaCoefficient();
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const kct = 1.0/kL - 1.0;
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return 11.27350207 * ex * ff * (1.0 + kct * (1.0 + ei/ex) / 2.0);
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}
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function ciae(ff, ei, ex) {
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// From Knight's 2016 paper
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return 17.70837564 * (ei+ex) / Math.log(1.0 + Math.PI**2 * ff);
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}
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// Calculates the effective capacitance of a multi-turn loop based on the work of Knight from his 2016 paper:
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function multiloopCapacitance() {
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const e0 = 8.854187e-12;
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const h = 1e-3 * loop_spacing_slider.value * conductor_diameter_slider.value;
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const ei = 1.0; // Assume internal epsilon is air (or free-space)
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const ex = 1.0; // Assume external epsilon is air (or free-space)
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const solenoid_length = loop_turns_slider.value * h;
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const ff = solenoid_length / loop_diameter_slider.value;
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var multiloop_capacitance = 1e-12 * (ctdw(ff, ei, ex) / Math.sqrt(1 - h**2 / loop_diameter_slider.value**2) + ciae(ff, ei, ex)) * loop_diameter_slider.value;
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return multiloop_capacitance; // in Farads
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}
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function tuningCapacitance(frequency) {
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// frequency is in Hertz
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const reactance = inductiveReactance(frequency);
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var multiloop_capacitance = 0.0;
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if(loop_turns_slider.value > 1) {
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// Only compensate for multiloop capacitance when we have more than 1 turn:
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multiloop_capacitance = multiloopCapacitance();
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}
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const capacitance = 1e12 * ((1.0 / (2.0 * Math.PI * frequency * reactance)) - multiloop_capacitance);
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return capacitance; // in picofarads
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}
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function calculateTuningCapacitor() {
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var retval = [];
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frequencies.forEach(freq => {
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const capacitor = tuningCapacitance(freq * 1e6);
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retval.push({x:freq, y:capacitor});
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});
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return retval;
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}
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const proximityResistance = {
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// From G. S. Smith, "Radiation Efficiency of Electrically Small Multiturn Loop Antennas", IEEE Trans Antennas Propagation, September 1972
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// 0 - this is the corresponding x-axis value. 1 - single loop adds zero to proximity resistance. Others measured empirically.
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0:[ 1.1, 1.15, 1.20, 1.25, 1.30, 1.40, 1.50, 1.60, 1.70, 1.80, 1.90, 2.00, 2.20, 2.40, 2.50, 2.60, 2.80, 3.00, 3.50, 4.00],
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1:[0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000],
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2:[0.299, 0.284, 0.268, 0.254, 0.240, 0.214, 0.191, 0.173, 0.155, 0.141, 0.128, 0.116, 0.098, 0.032, 0.077, 0.071, 0.061, 0.054, 0.040, 0.031],
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3:[0.643, 0.580, 0.531, 0.491, 0.455, 0.395, 0.346, 0.305, 0.270, 0.241, 0.216, 0.195, 0.161, 0.135, 0.124, 0.114, 0.098, 0.085, 0.062, 0.048],
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4:[0.996, 0.868, 0.777, 0.704, 0.644, 0.564, 0.470, 0.408, 0.353, 0.316, 0.281, 0.252, 0.205, 0.170, 0.156, 0.144, 0.123, 0.106, 0.077, 0.058],
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5:[1.347, 1.142, 1.002, 0.896, 0.809, 0.674, 0.572, 0.492, 0.428, 0.375, 0.332, 0.295, 0.239, 0.197, 0.180, 0.165, 0.141, 0.121, 0.087, 0.066],
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6:[1.689, 1.400, 1.210, 1.068, 0.956, 0.784, 0.658, 0.561, 0.485, 0.423, 0.372, 0.330, 0.265, 0.217, 0.198, 0.182, 0.154, 0.133, 0.095, 0.072],
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7:[2.020, 1.693, 1.401, 1.224, 1.086, 0.880, 0.732, 0.620, 0.532, 0.462, 0.405, 0.358, 0.286, 0.234, 0.213, 0.195, 0.165, 0.142, 0.101, 0.076],
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8:[2.340, 1.872, 1.577, 1.365, 1.203, 0.965, 0.796, 0.670, 0.573, 0.495, 0.433, 0.392, 0.304, 0.247, 0.225, 0.206, 0.174, 0.150, 0.106, 0.080]
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};
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function getProximityResFromSpacing(spacing_ratio) {
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// Use the proximityResistance look-up table and interpolate values depending on the spacing ratio and the number of turns.
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var retval = 0.0;
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var n_turns = loop_turns_slider.value;
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var i = 0;
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for (i = 0; i < (proximityResistance[0].length-1); i++) {
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if(spacing_ratio <= proximityResistance[0][i+1]) {
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// Linear interpolation between empirical proximity resistance values:
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retval = (((spacing_ratio - proximityResistance[0][i]) / (proximityResistance[0][i+1] - proximityResistance[0][i])
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* (proximityResistance[n_turns][i+1] - proximityResistance[n_turns][i])) + proximityResistance[n_turns][i]);
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break;
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}
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}
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return retval;
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}
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function lossResistance(frequency) {
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// Frequency in Hertz
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const a_coil_radius = loop_diameter_slider.value * 0.5;
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const b_conductor_radius = conductor_diameter_slider.value * 0.0005;
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const n_turns = loop_turns_slider.value;
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const loop_spacing_ratio = loop_spacing_slider.value;
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const mu0 = 4.0 * Math.PI * 1e-7;
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const k = (n_turns * a_coil_radius / b_conductor_radius);
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const Rp = getProximityResFromSpacing(loop_spacing_ratio);
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const Rs = Math.sqrt(Math.PI * frequency * mu0 / conductivity);
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//const R0 = (n_turns * Rs) / (2.0 * Math.PI * b_conductor_radius);
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const R_ohmic = k * Rs * (Rp + 1.0);
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//const R_ohmic = k * Rs * (Rp / R0 + 1.0);
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return R_ohmic;
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}
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function calculateLossResistance() {
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var retval = [];
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frequencies.forEach(freq => {
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const R_ohmic = lossResistance(freq * 1e6);
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retval.push({x:freq, y:R_ohmic});
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});
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return retval;
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}
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function calculateEfficiencyFactor() {
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var retval = [];
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frequencies.forEach(freq => {
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const R_ohmic = lossResistance(freq * 1e6);
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const R_rad = radiationResistance(freq * 1e6);
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const efficiency = 100.0 / (1.0 + (R_ohmic / R_rad));
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//const efficiency = 10.0 * Math.log10(1.0 / (1.0 + (R_ohmic / R_rad))); // for Efficiency in dB
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retval.push({x:freq, y:efficiency});
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});
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return retval;
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}
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function qualityFactor(frequency) {
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const Xl = inductiveReactance(frequency);
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const Rl = lossResistance(frequency);
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const Rr = radiationResistance(frequency);
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const Q = Xl / (Rl + Rr);
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return Q;
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}
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function calculateQualityFactor() {
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var retval = [];
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frequencies.forEach(freq => {
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const Q = qualityFactor(freq * 1e6);
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retval.push({x:freq, y:Q});
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});
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return retval;
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}
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function bandwidth(frequency) {
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const Q = qualityFactor(frequency);
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const bw = frequency * 1e-3 / Q; // in kiloHertz, remember that frequency comes in as Hz. Conversion between Hz and kHz is why the 1e-3 exists.
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return bw;
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}
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function calculateBandwidth() {
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var retval = [];
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frequencies.forEach(freq => {
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const bw = bandwidth(freq * 1e6);
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retval.push({x:freq, y:bw});
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});
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return retval;
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}
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function capacitorVoltage(frequency) {
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const Vcap = Math.sqrt(transmit_power_slider.value * inductiveReactance(frequency) * qualityFactor(frequency));
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return Vcap;
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}
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function calculateCapacitorVoltage() {
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var retval = [];
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frequencies.forEach(freq => {
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const Vcap = 0.001 * capacitorVoltage(freq * 1e6);
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retval.push({x:freq, y:Vcap});
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});
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return retval;
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}
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function circulatingCurrent(frequency) {
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const cc = Math.sqrt(transmit_power_slider.value * qualityFactor(frequency) / inductiveReactance(frequency));
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return cc;
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}
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function calculateCirculatingCurrent() {
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var retval = [];
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frequencies.forEach(freq => {
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const cc = circulatingCurrent(freq * 1e6);
|
|
retval.push({x:freq, y:cc});
|
|
});
|
|
return retval;
|
|
}
|
|
|
|
function calculateSRF() {
|
|
const capacitance = (loop_turns_slider.value > 1) ? multiloopCapacitance() : 1e-12; // Assume 1 pF for a single loop. Yes it is wrong, but we just don't want a divide-by-zero error below.
|
|
// According to Knight (2016), SRF for a single coil is equivalent to the circumference being equivalent to a half-wave dipole.
|
|
const inductance = getInductance();
|
|
return (1.0 / (2.0 * Math.PI * ((inductance * capacitance) ** 0.5)));
|
|
}
|
|
|
|
metric_radio.oninput = function() {
|
|
units = metric_radio.value;
|
|
//console.log(units);
|
|
drawFrontDesign();
|
|
drawSideDesign();
|
|
}
|
|
|
|
imperial_radio.oninput = function() {
|
|
units = imperial_radio.value;
|
|
//console.log(units);
|
|
drawFrontDesign();
|
|
drawSideDesign();
|
|
}
|
|
|
|
copper_radio.oninput = function() {
|
|
conductivity = 58e6;
|
|
drawFrontDesign();
|
|
drawSideDesign();
|
|
updateFrequencies();
|
|
myChart.data.datasets[0].data = calculateTuningCapacitor();
|
|
myChart.data.datasets[1].data = calculateCapacitorVoltage();
|
|
myChart.data.datasets[2].data = calculateBandwidth();
|
|
myChart.data.datasets[3].data = calculateEfficiencyFactor();
|
|
myChart.data.datasets[4].data = calculateRadiationResistance();
|
|
myChart.data.datasets[5].data = calculateLossResistance();
|
|
myChart.data.datasets[6].data = calculateInductiveReactance();
|
|
myChart.data.datasets[7].data = calculateQualityFactor();
|
|
myChart.data.datasets[8].data = calculateCirculatingCurrent();
|
|
myChart.update();
|
|
}
|
|
|
|
aluminium_radio.oninput = function() {
|
|
conductivity = 35e6;
|
|
drawFrontDesign();
|
|
drawSideDesign();
|
|
updateFrequencies();
|
|
myChart.data.datasets[0].data = calculateTuningCapacitor();
|
|
myChart.data.datasets[1].data = calculateCapacitorVoltage();
|
|
myChart.data.datasets[2].data = calculateBandwidth();
|
|
myChart.data.datasets[3].data = calculateEfficiencyFactor();
|
|
myChart.data.datasets[4].data = calculateRadiationResistance();
|
|
myChart.data.datasets[5].data = calculateLossResistance();
|
|
myChart.data.datasets[6].data = calculateInductiveReactance();
|
|
myChart.data.datasets[7].data = calculateQualityFactor();
|
|
myChart.data.datasets[8].data = calculateCirculatingCurrent();
|
|
myChart.update();
|
|
}
|
|
|
|
// Specify fonts for changing parameters controlled by the sliders:
|
|
var normal_font = "12px arial";
|
|
var emphasis_font = "bold 14px arial";
|
|
const emphasis_delay = 1200;
|
|
|
|
var loop_dia_timer_handler = 0;
|
|
var loop_dia_font = normal_font;
|
|
|
|
loop_diameter_slider.oninput = function() {
|
|
if(loop_dia_timer_handler == 0) {
|
|
loop_dia_font = emphasis_font;
|
|
loop_dia_timer_handler = setTimeout(function(){
|
|
loop_dia_font = normal_font;
|
|
drawFrontDesign();
|
|
loop_dia_timer_handler = 0;
|
|
}, emphasis_delay);
|
|
} else {
|
|
clearTimeout(loop_dia_timer_handler);
|
|
loop_dia_timer_handler = setTimeout(function(){
|
|
loop_dia_font = normal_font;
|
|
drawFrontDesign();
|
|
loop_dia_timer_handler = 0;
|
|
}, emphasis_delay);
|
|
}
|
|
|
|
drawFrontDesign();
|
|
drawSideDesign();
|
|
updateFrequencies();
|
|
myChart.data.datasets[0].data = calculateTuningCapacitor();
|
|
myChart.data.datasets[1].data = calculateCapacitorVoltage();
|
|
myChart.data.datasets[2].data = calculateBandwidth();
|
|
myChart.data.datasets[3].data = calculateEfficiencyFactor();
|
|
myChart.data.datasets[4].data = calculateRadiationResistance();
|
|
myChart.data.datasets[5].data = calculateLossResistance();
|
|
myChart.data.datasets[6].data = calculateInductiveReactance();
|
|
myChart.data.datasets[7].data = calculateQualityFactor();
|
|
myChart.data.datasets[8].data = calculateCirculatingCurrent();
|
|
myChart.update();
|
|
}
|
|
|
|
var cond_dia_timer_handler = 0;
|
|
var cond_dia_font = normal_font;
|
|
|
|
conductor_diameter_slider.oninput = function() {
|
|
if(cond_dia_timer_handler == 0) {
|
|
cond_dia_font = emphasis_font;
|
|
cond_dia_timer_handler = setTimeout(function(){
|
|
cond_dia_font = normal_font;
|
|
drawFrontDesign();
|
|
cond_dia_timer_handler = 0;
|
|
}, emphasis_delay);
|
|
} else {
|
|
clearTimeout(cond_dia_timer_handler);
|
|
cond_dia_timer_handler = setTimeout(function(){
|
|
cond_dia_font = normal_font;
|
|
drawFrontDesign();
|
|
cond_dia_timer_handler = 0;
|
|
}, emphasis_delay);
|
|
}
|
|
|
|
drawFrontDesign();
|
|
drawSideDesign();
|
|
myChart.data.datasets[0].data = calculateTuningCapacitor();
|
|
myChart.data.datasets[1].data = calculateCapacitorVoltage();
|
|
myChart.data.datasets[2].data = calculateBandwidth();
|
|
myChart.data.datasets[3].data = calculateEfficiencyFactor();
|
|
myChart.data.datasets[4].data = calculateRadiationResistance();
|
|
myChart.data.datasets[5].data = calculateLossResistance();
|
|
myChart.data.datasets[6].data = calculateInductiveReactance();
|
|
myChart.data.datasets[7].data = calculateQualityFactor();
|
|
myChart.data.datasets[8].data = calculateCirculatingCurrent();
|
|
myChart.update();
|
|
}
|
|
|
|
var turns_timer_handler = 0;
|
|
var turns_font = normal_font;
|
|
|
|
loop_turns_slider.oninput = function() {
|
|
if(turns_timer_handler == 0) {
|
|
turns_font = emphasis_font;
|
|
turns_timer_handler = setTimeout(function(){
|
|
turns_font = normal_font;
|
|
drawSideDesign();
|
|
turns_timer_handler = 0;
|
|
}, emphasis_delay);
|
|
} else {
|
|
clearTimeout(turns_timer_handler);
|
|
turns_timer_handler = setTimeout(function(){
|
|
turns_font = normal_font;
|
|
drawSideDesign();
|
|
turns_timer_handler = 0;
|
|
}, emphasis_delay);
|
|
}
|
|
|
|
drawFrontDesign();
|
|
drawSideDesign();
|
|
updateFrequencies();
|
|
myChart.data.datasets[0].data = calculateTuningCapacitor();
|
|
myChart.data.datasets[1].data = calculateCapacitorVoltage();
|
|
myChart.data.datasets[2].data = calculateBandwidth();
|
|
myChart.data.datasets[3].data = calculateEfficiencyFactor();
|
|
myChart.data.datasets[4].data = calculateRadiationResistance();
|
|
myChart.data.datasets[5].data = calculateLossResistance();
|
|
myChart.data.datasets[6].data = calculateInductiveReactance();
|
|
myChart.data.datasets[7].data = calculateQualityFactor();
|
|
myChart.data.datasets[8].data = calculateCirculatingCurrent();
|
|
myChart.update();
|
|
}
|
|
|
|
var spacing_timer_handler = 0;
|
|
var spacing_font = normal_font;
|
|
|
|
loop_spacing_slider.oninput = function() {
|
|
if(spacing_timer_handler == 0) {
|
|
spacing_font = emphasis_font;
|
|
spacing_timer_handler = setTimeout(function(){
|
|
spacing_font = normal_font;
|
|
drawSideDesign();
|
|
spacing_timer_handler = 0;
|
|
}, emphasis_delay);
|
|
} else {
|
|
clearTimeout(spacing_timer_handler);
|
|
spacing_timer_handler = setTimeout(function(){
|
|
spacing_font = normal_font;
|
|
drawSideDesign();
|
|
spacing_timer_handler = 0;
|
|
}, emphasis_delay);
|
|
}
|
|
|
|
drawFrontDesign();
|
|
drawSideDesign();
|
|
if(loop_turns_slider.value > 1) {
|
|
updateFrequencies();
|
|
}
|
|
myChart.data.datasets[0].data = calculateTuningCapacitor();
|
|
myChart.data.datasets[1].data = calculateCapacitorVoltage();
|
|
myChart.data.datasets[2].data = calculateBandwidth();
|
|
myChart.data.datasets[3].data = calculateEfficiencyFactor();
|
|
myChart.data.datasets[4].data = calculateRadiationResistance();
|
|
myChart.data.datasets[5].data = calculateLossResistance();
|
|
myChart.data.datasets[6].data = calculateInductiveReactance();
|
|
myChart.data.datasets[7].data = calculateQualityFactor();
|
|
myChart.data.datasets[8].data = calculateCirculatingCurrent();
|
|
myChart.update();
|
|
}
|
|
|
|
var tx_timer_handler = 0;
|
|
var tx_font = normal_font;
|
|
|
|
transmit_power_slider.oninput = function() {
|
|
if(tx_timer_handler == 0) {
|
|
tx_font = emphasis_font;
|
|
tx_timer_handler = setTimeout(function(){
|
|
tx_font = normal_font;
|
|
drawFrontDesign();
|
|
tx_timer_handler = 0;
|
|
}, emphasis_delay);
|
|
} else {
|
|
clearTimeout(tx_timer_handler);
|
|
tx_timer_handler = setTimeout(function(){
|
|
tx_font = normal_font;
|
|
drawFrontDesign();
|
|
tx_timer_handler = 0;
|
|
}, emphasis_delay);
|
|
}
|
|
|
|
drawFrontDesign();
|
|
myChart.data.datasets[1].data = calculateCapacitorVoltage();
|
|
myChart.data.datasets[8].data = calculateCirculatingCurrent();
|
|
myChart.update();
|
|
}
|
|
|
|
window.onresize = function() {
|
|
myChart.resize();
|
|
//myChart.update();
|
|
drawFrontDesign();
|
|
drawSideDesign();
|
|
// console.log("resize!");
|
|
}
|
|
|
|
window.onorientationchange = function() {
|
|
//myChart.resize();
|
|
//myChart.update();
|
|
drawFrontDesign();
|
|
drawSideDesign();
|
|
}
|
|
|
|
window.onbeforeprint = function() {
|
|
console.log("onbeforeprint");
|
|
//myChart.resize();
|
|
drawFrontDesign();
|
|
drawSideDesign();
|
|
}
|
|
|
|
const afront_canvas = document.getElementById("antennaFront2D");
|
|
const fctx = afront_canvas.getContext('2d');
|
|
|
|
function drawFrontDesign() {
|
|
const win_width = document.getElementById("antenna-front-container").offsetWidth;
|
|
const win_height = document.getElementById("antenna-front-container").offsetHeight;
|
|
//const win_width = afront_canvas.getBoundingClientRect().width;
|
|
//const win_height = afront_canvas.getBoundingClientRect().height;
|
|
afront_canvas.width = win_width-2;
|
|
afront_canvas.height = win_height-2;
|
|
|
|
fctx.clearRect(0, 0, win_width, win_height);
|
|
const loop_radius = win_width < win_height ? 0.32 * win_width : 0.32 * win_height;
|
|
const cond_radius = conductor_diameter_slider.value / 6;
|
|
const loopx = win_width/2;
|
|
const loopy = win_height/2;
|
|
|
|
// Draw loop:
|
|
fctx.beginPath();
|
|
fctx.arc(loopx, loopy, loop_radius + cond_radius, 0.5 * Math.PI + 0.02, 0.5 * Math.PI - 0.02, false);
|
|
fctx.arc(loopx, loopy, loop_radius - cond_radius, 0.5 * Math.PI - 0.025, 0.5 * Math.PI + 0.025, true);
|
|
fctx.closePath();
|
|
fctx.fill();
|
|
|
|
// Draw cap:
|
|
fctx.lineWidth = 3;
|
|
fctx.beginPath();
|
|
fctx.moveTo(loopx - 3, loopy + loop_radius - 3*cond_radius);
|
|
fctx.lineTo(loopx - 3, loopy + loop_radius + 3*cond_radius);
|
|
fctx.moveTo(loopx + 3, loopy + loop_radius - 3*cond_radius);
|
|
fctx.lineTo(loopx + 3, loopy + loop_radius + 3*cond_radius);
|
|
fctx.stroke();
|
|
fctx.lineWidth = 1;
|
|
|
|
// Draw coupling loop:
|
|
fctx.beginPath();
|
|
fctx.arc(loopx, loopy - (loop_radius - loop_radius/5) + cond_radius , loop_radius/5, 0, 2*Math.PI, true);
|
|
fctx.stroke();
|
|
|
|
// Draw loop diameter arrow:
|
|
fctx.beginPath();
|
|
fctx.moveTo(loopx - loop_radius, loopy);
|
|
fctx.lineTo(loopx - loop_radius + 2*cond_radius, loopy - 2*cond_radius);
|
|
fctx.lineTo(loopx - loop_radius + 2*cond_radius, loopy + 2*cond_radius);
|
|
fctx.lineTo(loopx - loop_radius, loopy);
|
|
fctx.lineTo(loopx + loop_radius, loopy);
|
|
fctx.lineTo(loopx + loop_radius - 2*cond_radius, loopy + 2*cond_radius);
|
|
fctx.lineTo(loopx + loop_radius - 2*cond_radius, loopy - 2*cond_radius);
|
|
fctx.lineTo(loopx + loop_radius, loopy);
|
|
fctx.stroke();
|
|
|
|
// Write loop inductance:
|
|
fctx.font = normal_font;
|
|
const L = getInductance() * 1.0e+6;
|
|
fctx.fillText("L = " + L.toPrecision(3).toString() + " \u03bcH", 8, 18);
|
|
|
|
// Write Tx power text:
|
|
fctx.font = tx_font;
|
|
fctx.fillText("Tx = " + transmit_power_slider.value + " W", 8, win_height * 0.8 + 20);
|
|
|
|
// Write loop diameter symbol:
|
|
fctx.font = normal_font;
|
|
fctx.textAlign = "center";
|
|
const dia = 1.0 * loop_diameter_slider.value;
|
|
fctx.font = loop_dia_font;
|
|
if(units == "metric") {
|
|
fctx.fillText("\u2300b = " + dia.toPrecision(3).toString() + " m", loopx, loopy - 6);
|
|
} else {
|
|
fctx.fillText("\u2300b = " + (dia*3.28084).toPrecision(3).toString() + "\'", loopx, loopy - 6);
|
|
}
|
|
fctx.font = normal_font;
|
|
|
|
// Draw conductor diameter arrow:
|
|
fctx.beginPath();
|
|
var p1x = loopx + 0.4 * (loop_radius - cond_radius);
|
|
var p1y = loopy + 0.4 * (loop_radius - cond_radius);
|
|
var p2x = loopx + 0.707 * (loop_radius - cond_radius);
|
|
var p2y = loopy + 0.707 * (loop_radius - cond_radius);
|
|
var p3x = loopx + 0.707 * (loop_radius - cond_radius) - 3*cond_radius;
|
|
var p3y = loopy + 0.707 * (loop_radius - cond_radius);
|
|
var p4x = loopx + 0.707 * (loop_radius - cond_radius);
|
|
var p4y = loopy + 0.707 * (loop_radius - cond_radius) - 3*cond_radius;
|
|
fctx.moveTo(win_width-p1x, p1y);
|
|
fctx.lineTo(p1x, p1y);
|
|
fctx.lineTo(p2x, p2y);
|
|
fctx.lineTo(p3x, p3y);
|
|
fctx.lineTo(p4x, p4y);
|
|
fctx.lineTo(p2x, p2y);
|
|
|
|
p1x = loopx + 1.0 * (loop_radius + cond_radius);
|
|
p1y = loopy + 1.0 * (loop_radius + cond_radius);
|
|
p2x = loopx + 0.707 * (loop_radius + cond_radius);
|
|
p2y = loopy + 0.707 * (loop_radius + cond_radius);
|
|
p3x = loopx + 0.707 * (loop_radius + cond_radius) + 3*cond_radius;
|
|
p3y = loopy + 0.707 * (loop_radius + cond_radius);
|
|
p4x = loopx + 0.707 * (loop_radius + cond_radius);
|
|
p4y = loopy + 0.707 * (loop_radius + cond_radius) + 3*cond_radius;
|
|
fctx.moveTo(p1x, p1y);
|
|
fctx.lineTo(p2x, p2y);
|
|
fctx.lineTo(p3x, p3y);
|
|
fctx.lineTo(p4x, p4y);
|
|
fctx.lineTo(p2x, p2y);
|
|
fctx.stroke();
|
|
p1x = loopx + 0.4 * (loop_radius - cond_radius);
|
|
p1y = loopy + 0.4 * (loop_radius - cond_radius) - 5;
|
|
//fctx.textAlign = "right";
|
|
const cond_dia = 1.0 * conductor_diameter_slider.value;
|
|
fctx.textAlign = "center";
|
|
if(units == "metric") {
|
|
fctx.font = cond_dia_font;
|
|
fctx.fillText("\u2300a = " + cond_dia.toPrecision(3).toString() + " mm", loopx, p1y+2);
|
|
fctx.font = normal_font;
|
|
// Write loop area:
|
|
fctx.textAlign = "right";
|
|
fctx.fillText("A = " + (Math.PI * (0.5*dia)**2).toPrecision(3).toString() + " m\u00B2", win_width-8, 18);
|
|
|
|
// Write Tx power text:
|
|
fctx.fillText("circ = " + (Math.PI * dia).toPrecision(3).toString() + " m", win_width-8, win_height * 0.8 + 20);
|
|
} else {
|
|
fctx.font = cond_dia_font;
|
|
fctx.fillText("\u2300a = " + (cond_dia/25.4).toPrecision(3).toString() + "\"", loopx, p1y+2);
|
|
fctx.font = normal_font;
|
|
// Write loop area:
|
|
fctx.textAlign = "right";
|
|
fctx.fillText("A = " + (Math.PI * (0.5*dia*3.28084)**2).toPrecision(3).toString() + " ft\u00B2", win_width-8, 18);
|
|
|
|
// Write Tx power text:
|
|
fctx.fillText("circ = " + (Math.PI * dia*3.28084).toPrecision(3).toString() + " ft", win_width-8, win_height * 0.8 + 20);
|
|
}
|
|
|
|
}
|
|
|
|
const aside_canvas = document.getElementById("antennaSide2D");
|
|
const sctx = aside_canvas.getContext('2d');
|
|
|
|
function drawSideDesign() {
|
|
const win_width = document.getElementById("antenna-side-container").offsetWidth;
|
|
const win_height = document.getElementById("antenna-side-container").offsetHeight;
|
|
//const win_width = aside_canvas.getBoundingClientRect().width;
|
|
//const win_height = aside_canvas.getBoundingClientRect().height;
|
|
//console.log(win_width, win_height);
|
|
aside_canvas.width = win_width-2;
|
|
aside_canvas.height = win_height-2;
|
|
//const win_width = aside_canvas.width;
|
|
//const win_height = aside_canvas.height;
|
|
sctx.clearRect(0, 0, win_width, win_height);
|
|
|
|
//const loop_radius = win_width < win_height ? 0.40 * win_width : 0.40 * win_height;
|
|
|
|
const cond_radius = conductor_diameter_slider.value / 6;
|
|
const cond_spacing = 2 * cond_radius * loop_spacing_slider.value;
|
|
const start_x = win_width/2 - loop_turns_slider.value * cond_spacing * 0.5;
|
|
const top_y = win_height * 0.2;
|
|
const bot_y = win_height * 0.7;
|
|
for (let i = 0; i < loop_turns_slider.value; i++) {
|
|
sctx.beginPath();
|
|
sctx.arc(start_x + i * cond_spacing, bot_y, cond_radius, 0, Math.PI);
|
|
sctx.arc(start_x + cond_spacing * 0.5 + i * cond_spacing, top_y, cond_radius, Math.PI, 0);
|
|
sctx.lineTo(start_x + i * cond_spacing + cond_radius, bot_y);
|
|
sctx.fill();
|
|
|
|
sctx.beginPath();
|
|
sctx.moveTo(start_x + cond_spacing * 0.5 + i * cond_spacing + cond_radius, top_y);
|
|
sctx.lineTo(start_x + (i+1) * cond_spacing + cond_radius, bot_y);
|
|
sctx.arc(start_x + (i+1) * cond_spacing, bot_y, cond_radius, 0, Math.PI, false);
|
|
sctx.lineTo(start_x + cond_spacing * 0.5 + i * cond_spacing - cond_radius, top_y);
|
|
sctx.stroke();
|
|
}
|
|
// Draw left spacing arrow:
|
|
const dim_y = win_height * 0.8;
|
|
sctx.beginPath();
|
|
sctx.moveTo(start_x - 20, dim_y);
|
|
sctx.lineTo(start_x, dim_y);
|
|
sctx.lineTo(start_x - 7, dim_y + 7)
|
|
sctx.lineTo(start_x - 7, dim_y - 7)
|
|
sctx.lineTo(start_x, dim_y);
|
|
sctx.moveTo(start_x, dim_y - 7);
|
|
sctx.lineTo(start_x, dim_y + 7);
|
|
sctx.stroke();
|
|
// Draw right spacing arrow:
|
|
sctx.beginPath();
|
|
sctx.moveTo(start_x + cond_spacing + 20, dim_y);
|
|
sctx.lineTo(start_x + cond_spacing, dim_y);
|
|
sctx.lineTo(start_x + cond_spacing + 7, dim_y + 7)
|
|
sctx.lineTo(start_x + cond_spacing + 7, dim_y - 7)
|
|
sctx.lineTo(start_x + cond_spacing, dim_y);
|
|
sctx.moveTo(start_x + cond_spacing, dim_y - 7);
|
|
sctx.lineTo(start_x + cond_spacing, dim_y + 7);
|
|
sctx.stroke();
|
|
|
|
sctx.textAlign = "left";
|
|
sctx.font = turns_font;
|
|
sctx.fillText("N = " + loop_turns_slider.value.toString(), 8, win_height * 0.1 + 3);
|
|
sctx.font = spacing_font;
|
|
sctx.fillText("c/a = ", 8, win_height * 0.1 + 18);
|
|
sctx.fillText((loop_spacing_slider.value*1.0).toPrecision(3).toString(), 8, win_height * 0.1 + 33);
|
|
sctx.font = normal_font;
|
|
|
|
// Multi-turn loop, so calculate C and SRF:
|
|
if(loop_turns_slider.value > 1) {
|
|
const L = multiloopCapacitance() * 1e+12;
|
|
const srf = calculateSRF();
|
|
sctx.textAlign = "right";
|
|
sctx.fillText("C = " + L.toFixed(0).toString() + " pF", win_width-8, 18);
|
|
sctx.fillText("SRF = ", win_width-8, win_height * 0.1 + 18);
|
|
sctx.fillText((srf*1e-6).toPrecision(3).toString() + " MHz", win_width-8, win_height * 0.1 + 33);
|
|
}
|
|
|
|
sctx.textAlign = "right";
|
|
sctx.fillText("cond = " , win_width-8, dim_y + 08);
|
|
const cond_length = ((((Math.PI * loop_diameter_slider.value * loop_turns_slider.value) ** 2.0) + ((loop_spacing_slider.value * conductor_diameter_slider.value * 1e-3 * loop_turns_slider.value) ** 2.0)) ** 0.5);
|
|
if(units == "metric") {
|
|
sctx.fillText(cond_length.toPrecision(4).toString() + " m", win_width-8, dim_y + 20);
|
|
} else {
|
|
sctx.fillText((cond_length * 3.28084).toPrecision(4).toString() + " ft", win_width-8, dim_y + 20);
|
|
}
|
|
|
|
// Draw spacing text:
|
|
sctx.textAlign = "center";
|
|
const spc = (loop_turns_slider.value > 1) ? loop_spacing_slider.value * conductor_diameter_slider.value : 0.0;
|
|
if(units == "metric") {
|
|
sctx.fillText("c = " + spc.toPrecision(3).toString() + " mm", start_x + cond_spacing, dim_y + 20);
|
|
} else {
|
|
sctx.fillText("c = " + (spc/25.4).toPrecision(3).toString() + " in", start_x + cond_spacing, dim_y + 20);
|
|
}
|
|
}
|
|
drawFrontDesign();
|
|
drawSideDesign();
|
|
|
|
const chartCanvas = document.getElementById("chartCanvas");
|
|
const chartCanvasContext = chartCanvas.getContext('2d');
|
|
|
|
var myChart = new Chart(chartCanvasContext, {
|
|
type: 'line',
|
|
data: {
|
|
datasets: [
|
|
{
|
|
label: 'Tuning Cap (pF)',
|
|
fill: false,
|
|
borderColor: 'green',
|
|
backgroundColor: 'green',
|
|
data: calculateTuningCapacitor(),
|
|
borderWidth: 1,
|
|
yAxisID: 'pfID'
|
|
},
|
|
{
|
|
label: 'Vcap (kV)',
|
|
fill: false,
|
|
borderColor: 'rgb(150, 150, 0)',
|
|
backgroundColor: 'rgb(200, 200, 0)',
|
|
data: calculateCapacitorVoltage(),
|
|
borderWidth: 1,
|
|
yAxisID: 'vID'
|
|
},
|
|
{
|
|
label: 'BW (kHz)',
|
|
fill: false,
|
|
borderColor: 'brown',
|
|
backgroundColor: 'brown',
|
|
data: calculateBandwidth(),
|
|
borderWidth: 1,
|
|
yAxisID: 'bwID'
|
|
},
|
|
{
|
|
label: 'Efficiency (%)',
|
|
fill: false,
|
|
borderColor: 'black',
|
|
backgroundColor: 'black',
|
|
data: calculateEfficiencyFactor(),
|
|
borderWidth: 1,
|
|
yAxisID: 'effID'
|
|
},
|
|
{
|
|
label: 'R-radiation (\u03A9)',
|
|
fill: false,
|
|
borderColor: 'red',
|
|
backgroundColor: 'red',
|
|
data: calculateRadiationResistance(),
|
|
borderWidth: 1,
|
|
yAxisID: 'mohmsID'
|
|
},
|
|
{
|
|
label: 'R-loss (\u03A9)',
|
|
fill: false,
|
|
borderColor: 'orange',
|
|
backgroundColor: 'orange',
|
|
data: calculateLossResistance(),
|
|
borderWidth: 1,
|
|
yAxisID: 'mohmsID'
|
|
},
|
|
{
|
|
label: 'Reactance (j\u03A9)',
|
|
fill: false,
|
|
borderColor: 'blue',
|
|
backgroundColor: 'blue',
|
|
data: calculateInductiveReactance(),
|
|
borderWidth: 1,
|
|
yAxisID: 'ohmsID'
|
|
},
|
|
{
|
|
label: 'Q',
|
|
fill: false,
|
|
borderColor: 'purple',
|
|
backgroundColor: 'purple',
|
|
data: calculateQualityFactor(),
|
|
borderWidth: 1,
|
|
yAxisID: 'qID'
|
|
},
|
|
{
|
|
label: 'I\u2092 (A)',
|
|
fill: false,
|
|
borderColor: 'rgb(0,255,255)',
|
|
backgroundColor: 'rgb(0,128,128)',
|
|
data: calculateCirculatingCurrent(),
|
|
borderWidth: 1,
|
|
yAxisID: 'ccID'
|
|
}]
|
|
},
|
|
options: {
|
|
responsive: true,
|
|
maintainAspectRatio: false,
|
|
scales: {
|
|
xAxes: [{
|
|
type: 'linear',
|
|
position: 'bottom',
|
|
display: true,
|
|
scaleLabel: {
|
|
display: true,
|
|
labelString: 'Frequency (MHz)'
|
|
}
|
|
}],
|
|
yAxes: [{
|
|
type: 'linear',
|
|
display: 'auto',
|
|
scaleLabel: {
|
|
display: true,
|
|
labelString: 'Efficiency %',
|
|
fontColor: 'black',
|
|
fontStyle: 'bold'
|
|
},
|
|
ticks: {
|
|
min: 0,
|
|
max: 100,
|
|
},
|
|
position: 'left',
|
|
id: 'effID'
|
|
},{
|
|
type: 'linear',
|
|
display: 'auto',
|
|
scaleLabel: {
|
|
display: true,
|
|
labelString: 'BW kHz',
|
|
fontColor: 'brown',
|
|
fontStyle: 'bold'
|
|
},
|
|
ticks: {
|
|
beginAtZero: true,
|
|
},
|
|
position: 'left',
|
|
id: 'bwID'
|
|
},{
|
|
type: 'linear',
|
|
display: 'auto',
|
|
scaleLabel: {
|
|
display: true,
|
|
labelString: 'kV',
|
|
fontColor: 'rgb(150, 150, 0)',
|
|
fontStyle: 'bold'
|
|
},
|
|
ticks: {
|
|
beginAtZero: true,
|
|
},
|
|
min: 0.0,
|
|
position: 'left',
|
|
id: 'vID'
|
|
},{
|
|
type: 'linear',
|
|
display: 'auto',
|
|
scaleLabel: {
|
|
display: true,
|
|
labelString: '\u03A9',
|
|
fontColor: 'red',
|
|
fontStyle: 'bold'
|
|
},
|
|
position: 'right',
|
|
id: 'mohmsID',
|
|
},{
|
|
type: 'linear',
|
|
display: 'auto',
|
|
scaleLabel: {
|
|
display: true,
|
|
labelString: 'pF',
|
|
fontColor: 'green',
|
|
fontStyle: 'bold'
|
|
},
|
|
ticks: {
|
|
max: 2000.0,
|
|
},
|
|
position: 'left',
|
|
id: 'pfID'
|
|
},{
|
|
type: 'linear',
|
|
display: 'auto',
|
|
scaleLabel: {
|
|
display: true,
|
|
labelString: 'j\u03A9',
|
|
fontColor: 'blue',
|
|
fontStyle: 'bold'
|
|
},
|
|
ticks: {
|
|
beginAtZero: true,
|
|
},
|
|
position: 'right',
|
|
id: 'ohmsID'
|
|
},{
|
|
type: 'linear',
|
|
display: 'auto',
|
|
scaleLabel: {
|
|
display: true,
|
|
labelString: 'Q',
|
|
fontColor: 'purple',
|
|
fontStyle: 'bold'
|
|
},
|
|
ticks: {
|
|
beginAtZero: true,
|
|
},
|
|
position: 'right',
|
|
id: 'qID'
|
|
},{
|
|
type: 'linear',
|
|
display: 'auto',
|
|
scaleLabel: {
|
|
display: true,
|
|
labelString: 'A',
|
|
fontColor: 'rgb(0,128,128)',
|
|
fontStyle: 'bold'
|
|
},
|
|
ticks: {
|
|
beginAtZero: true,
|
|
},
|
|
min: 0.0,
|
|
position: 'right',
|
|
id: 'ccID'
|
|
}]
|
|
},
|
|
showLines: true,
|
|
tooltips: {
|
|
mode: 'interpolate',
|
|
intersect: false,
|
|
position: 'nearest',
|
|
callbacks: {
|
|
title: function(tooltipItem, data) {
|
|
var label = '' + tooltipItem[0].xLabel.toFixed(3).toString();
|
|
label += ' MHz ';
|
|
return label;
|
|
},
|
|
label: function(tooltipItem, data) {
|
|
var label = data.datasets[tooltipItem.datasetIndex].label || '';
|
|
if (label) {
|
|
label += ': ';
|
|
}
|
|
label += Math.round(tooltipItem.yLabel * 1000) / 1000;
|
|
return label;
|
|
}
|
|
}
|
|
},
|
|
plugins: {
|
|
crosshair: {
|
|
line: {
|
|
color: 'red', // crosshair line color
|
|
width: 1, // crosshair line width
|
|
dashPattern: [100, 100]
|
|
},
|
|
sync: {
|
|
enabled: false, // enable trace line syncing with other charts
|
|
group: 1, // chart group
|
|
suppressTooltips: true // suppress tooltips when showing a synced tracer
|
|
},
|
|
zoom: {
|
|
enabled: false, // enable zooming
|
|
zoomboxBackgroundColor: 'rgba(66,133,244,0.2)', // background color of zoom box
|
|
zoomboxBorderColor: '#48F', // border color of zoom box
|
|
zoomButtonText: 'Reset Zoom', // reset zoom button text
|
|
zoomButtonClass: 'reset-zoom', // reset zoom button class
|
|
},
|
|
callbacks: {
|
|
beforeZoom: function(start, end) { // called before zoom, return false to prevent zoom
|
|
return false; // return true to enable zooming
|
|
},
|
|
afterZoom: function(start, end) { // called after zoom
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
});
|
|
</script>
|
|
</body>
|
|
</html> |