kopia lustrzana https://github.com/miguelvaca/vk3cpu
V10 added skin depth
miguel
rodzic
67577c8836
commit
6e82732cec
60
magloop.html
60
magloop.html
|
|
@ -7,7 +7,7 @@
|
|||
<link rel="stylesheet" href="magloop.css">
|
||||
</head>
|
||||
<body>
|
||||
<header>Miguel <a href="mailto:vk3cpu@gmail.com">VK3CPU</a> - Magloop Antenna Calculator V9</header>
|
||||
<header>Miguel <a href="mailto:vk3cpu@gmail.com">VK3CPU</a> - Magloop Antenna Calculator V10</header>
|
||||
<section class="gridLayoutClass">
|
||||
<div class="chart-container" style="position: relative;">
|
||||
<canvas id="chartCanvas" class="chartCanvasClass">
|
||||
|
|
@ -116,6 +116,7 @@
|
|||
<li>Q : The antenna Q (quality) factor.</li>
|
||||
<li>Ia (A): The RMS loop current in amps.</li>
|
||||
<li>Perimeter (λ): Antenna perimeter size relative to the wavelength.</li>
|
||||
<li>Skin depth (μm): Conductor skin depth in micrometers.</li>
|
||||
</ul>
|
||||
<u><b>Usage hints:</b></u>
|
||||
<li>Tap on legend items to disable or enable an output parameter. This can be used to declutter the chart.</li>
|
||||
|
|
@ -134,6 +135,8 @@
|
|||
[2]: A. Boswell, A. J. Tyler and A. White, <b>"Performance of a Small Loop Antenna in the 3 - 10 MHz Band"</b> <i>, IEEE Antennas and Propagation Magazine, 47, 2, April 2005, pp. 5 1 -56.</i> <br>
|
||||
<br>
|
||||
<b><u>Change history:</u></b><br>
|
||||
<b>[8-May-23] - V10</b> <br>
|
||||
* Added conductor skin depth as a new calculated parameter.<br>
|
||||
<b>[23-Apr-23] - V9</b> <br>
|
||||
* Changed the frequency list to include VHF (2m) and UHF (70cm) bands.<br>
|
||||
* Reduced minimum loop diameter to 4 cm.<br>
|
||||
|
|
@ -208,6 +211,7 @@
|
|||
var shape = "circle"; // Shape of the main loop
|
||||
var loop_turns = 1; //
|
||||
var loop_mode = "series"; // Series or parallel. When loop_turns_slider.value == 0, loop_turns is 2 and loop_mode is "parallel"
|
||||
const mu0 = Math.PI * 4e-7;
|
||||
|
||||
var inductance = 0.0;
|
||||
var area = 0.0; // Loop area in square meters.
|
||||
|
|
@ -309,7 +313,6 @@
|
|||
|
||||
// Calculate the inductance of the coil. For single turn loops, use standard inductance equation. For multi-turn, use Nagaoka correction.
|
||||
function getInductance() {
|
||||
const mu0 = Math.PI * 4e-7;
|
||||
const loop_diameter_meters = loop_diameter_slider.value;
|
||||
const cond_diameter_meters = conductor_diameter_slider.value * 1e-3;
|
||||
const spacing_ratio = loop_spacing_slider.value;
|
||||
|
|
@ -480,7 +483,6 @@
|
|||
const a_coil_radius = loop_diameter_slider.value * 0.5;
|
||||
const b_conductor_radius = conductor_diameter_slider.value * 0.0005;
|
||||
const loop_spacing_ratio = loop_spacing_slider.value;
|
||||
const mu0 = 4.0 * Math.PI * 1e-7;
|
||||
|
||||
// How much longer is the perimeter compared to the circumference if it were circular:
|
||||
const shape_factor = perimeter / (Math.PI * loop_diameter_slider.value);
|
||||
|
|
@ -505,6 +507,16 @@
|
|||
});
|
||||
return retval;
|
||||
}
|
||||
|
||||
// Returns skin-depth in micrometers:
|
||||
function calculateSkinDepth() {
|
||||
var retval = [];
|
||||
frequencies.forEach(freq => {
|
||||
const skin_depth = 1e6 * Math.sqrt(1e-6/(conductivity * Math.PI * freq * mu0));
|
||||
retval.push({x:freq, y:skin_depth});
|
||||
});
|
||||
return retval;
|
||||
}
|
||||
|
||||
function calculateEfficiencyFactor() {
|
||||
var retval = [];
|
||||
|
|
@ -626,6 +638,7 @@
|
|||
myChart.data.datasets[7].data = calculateQualityFactor();
|
||||
myChart.data.datasets[8].data = calculateCirculatingCurrent();
|
||||
myChart.data.datasets[9].data = calculateAntennaSize();
|
||||
myChart.data.datasets[10].data = calculateSkinDepth();
|
||||
myChart.update();
|
||||
}
|
||||
|
||||
|
|
@ -646,6 +659,7 @@
|
|||
myChart.data.datasets[7].data = calculateQualityFactor();
|
||||
myChart.data.datasets[8].data = calculateCirculatingCurrent();
|
||||
myChart.data.datasets[9].data = calculateAntennaSize();
|
||||
myChart.data.datasets[10].data = calculateSkinDepth();
|
||||
myChart.update();
|
||||
}
|
||||
|
||||
|
|
@ -665,6 +679,7 @@
|
|||
myChart.data.datasets[7].data = calculateQualityFactor();
|
||||
myChart.data.datasets[8].data = calculateCirculatingCurrent();
|
||||
myChart.data.datasets[9].data = calculateAntennaSize();
|
||||
myChart.data.datasets[10].data = calculateSkinDepth();
|
||||
myChart.update();
|
||||
}
|
||||
|
||||
|
|
@ -684,6 +699,7 @@
|
|||
myChart.data.datasets[7].data = calculateQualityFactor();
|
||||
myChart.data.datasets[8].data = calculateCirculatingCurrent();
|
||||
myChart.data.datasets[9].data = calculateAntennaSize();
|
||||
myChart.data.datasets[10].data = calculateSkinDepth();
|
||||
myChart.update();
|
||||
}
|
||||
|
||||
|
|
@ -703,6 +719,7 @@
|
|||
myChart.data.datasets[7].data = calculateQualityFactor();
|
||||
myChart.data.datasets[8].data = calculateCirculatingCurrent();
|
||||
myChart.data.datasets[9].data = calculateAntennaSize();
|
||||
myChart.data.datasets[10].data = calculateSkinDepth();
|
||||
myChart.update();
|
||||
}
|
||||
|
||||
|
|
@ -722,6 +739,7 @@
|
|||
myChart.data.datasets[7].data = calculateQualityFactor();
|
||||
myChart.data.datasets[8].data = calculateCirculatingCurrent();
|
||||
myChart.data.datasets[9].data = calculateAntennaSize();
|
||||
myChart.data.datasets[10].data = calculateSkinDepth();
|
||||
myChart.update();
|
||||
}
|
||||
|
||||
|
|
@ -770,6 +788,7 @@
|
|||
myChart.data.datasets[7].data = calculateQualityFactor();
|
||||
myChart.data.datasets[8].data = calculateCirculatingCurrent();
|
||||
myChart.data.datasets[9].data = calculateAntennaSize();
|
||||
myChart.data.datasets[10].data = calculateSkinDepth();
|
||||
myChart.update();
|
||||
}
|
||||
|
||||
|
|
@ -809,6 +828,7 @@
|
|||
myChart.data.datasets[7].data = calculateQualityFactor();
|
||||
myChart.data.datasets[8].data = calculateCirculatingCurrent();
|
||||
myChart.data.datasets[9].data = calculateAntennaSize();
|
||||
myChart.data.datasets[10].data = calculateSkinDepth();
|
||||
myChart.update();
|
||||
}
|
||||
|
||||
|
|
@ -846,6 +866,7 @@
|
|||
myChart.data.datasets[7].data = calculateQualityFactor();
|
||||
myChart.data.datasets[8].data = calculateCirculatingCurrent();
|
||||
myChart.data.datasets[9].data = calculateAntennaSize();
|
||||
myChart.data.datasets[10].data = calculateSkinDepth();
|
||||
myChart.update();
|
||||
}
|
||||
|
||||
|
|
@ -885,6 +906,7 @@
|
|||
myChart.data.datasets[7].data = calculateQualityFactor();
|
||||
myChart.data.datasets[8].data = calculateCirculatingCurrent();
|
||||
myChart.data.datasets[9].data = calculateAntennaSize();
|
||||
myChart.data.datasets[10].data = calculateSkinDepth();
|
||||
myChart.update();
|
||||
}
|
||||
|
||||
|
|
@ -1611,6 +1633,16 @@
|
|||
borderWidth: 1,
|
||||
yAxisID: 'sizeID',
|
||||
tension: 0.3,
|
||||
},
|
||||
{
|
||||
label: 'Skin depth (\u03BCm)',
|
||||
fill: false,
|
||||
borderColor: 'rgb(75,75,75)',
|
||||
backgroundColor: 'rgb(75,75,75)',
|
||||
data: calculateSkinDepth(),
|
||||
borderWidth: 1,
|
||||
yAxisID: 'skinID',
|
||||
tension: 0.3,
|
||||
}]
|
||||
},
|
||||
options: {
|
||||
|
|
@ -1781,6 +1813,24 @@
|
|||
},
|
||||
min: 0.0,
|
||||
position: 'right',
|
||||
},
|
||||
'skinID' : {
|
||||
type: 'linear',
|
||||
display: 'auto',
|
||||
title: {
|
||||
display: true,
|
||||
text: '\u03B4 (\u03BCm)',
|
||||
color: 'rgb(90,90,90)',
|
||||
font: {
|
||||
weight : 'bold'
|
||||
}
|
||||
},
|
||||
ticks: {
|
||||
beginAtZero: true,
|
||||
//max: 0.3,
|
||||
},
|
||||
min: 0.0,
|
||||
position: 'right',
|
||||
}
|
||||
},
|
||||
plugins: {
|
||||
|
|
@ -1848,6 +1898,10 @@
|
|||
} else
|
||||
if(label[0] == 'P'){
|
||||
label = justifyText("Perimeter: ", value.toFixed(3).toString() + ' ' + '\u03BB');
|
||||
} else
|
||||
if(label[0] == 'S'){
|
||||
var num = getMetricPrefix(value * 1e-6);
|
||||
label = justifyText("Skin depth: ", num.val.toPrecision(3).toString() + ' ' + num.pfx + 'm');
|
||||
} else {
|
||||
label += value.toFixed(3).toString();
|
||||
}
|
||||
|
|
|
|||
Ładowanie…
Reference in New Issue