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{
"cells": [
{
"cell_type": "markdown",
"metadata": {},
"source": [
"# Chapter 12: Reflector Antennas"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Example 12.9_1: First_null_beam_width_and_power_gain.sce"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {
"collapsed": true
},
"outputs": [],
"source": [
"//Example No. 12.9.1\n",
"clc;\n",
"clear;\n",
"close;\n",
"format('v',6);\n",
"D=2;//m(Diameter)\n",
"f=6000;//MHz(Frequency)\n",
"c=3*10^8;//m/s////speed of light\n",
"lambda=c/(f*10^6);//m(Wavelength)\n",
"FNBW=140*lambda/D;//degree\n",
"disp(FNBW,'First null beam width(FNBW in degree) : ');\n",
"GP=6*(D/lambda)^2;//unitless(Power gain)\n",
"GP_dB=10*log10(GP);//dB(Power gain)\n",
"disp(GP_dB,'Power Gain in dB : ');\n",
"//Ans in the book is not accurate."
]
}
,
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Example 12.9_2: Diameter_of_mouth_and_HPBW.sce"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {
"collapsed": true
},
"outputs": [],
"source": [
"//Example No. 12.9.2\n",
"clc;\n",
"clear;\n",
"close;\n",
"format('v',5);\n",
"GP=1000;//unitless(Power gain)\n",
"lambda=10;//cm(Wavelength)\n",
"D=sqrt(GP/6)*(lambda/100);//m(Diameter)\n",
"disp(D,'Diameter of mouth in meter : ');\n",
"HPBW=58*(lambda/100)/D;//degree(HPBW)\n",
"disp(HPBW,'Half power beam width(HPBW in degree) : ');"
]
}
,
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Example 12.9_3: Gain_Beamwidth_and_capture_area.sce"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {
"collapsed": true
},
"outputs": [],
"source": [
"//Example No. 12.9.3\n",
"clc;\n",
"clear;\n",
"close;\n",
"format('v',6);\n",
"D=6;//meter(Diameter)\n",
"f=10;//GHz(Frequency)\n",
"c=3*10^8;//m/s////speed of light\n",
"lambda=c/(f*10^9);//m(Wavelength)\n",
"GP=6*(D/lambda)^2;//unitless(Power gain)\n",
"GP_dB=10*log10(GP);//dB(Power gain)\n",
"disp(GP_dB,'Gain in dB : ');\n",
"FNBW=140*lambda/D;//degree(FNBW)\n",
"disp(FNBW,'FNBW in degree : ');\n",
"HPBW=58*lambda/D;//degree(HPBW)\n",
"disp(HPBW,'HPBW in degree : ');\n",
"K=0.65;//constant\n",
"Ao=K*%pi/4*D^2;//m²(Capture area)\n",
"disp(Ao,'Capture area in m² : ');"
]
}
],
"metadata": {
"kernelspec": {
"display_name": "Scilab",
"language": "scilab",
"name": "scilab"
},
"language_info": {
"file_extension": ".sce",
"help_links": [
{
"text": "MetaKernel Magics",
"url": "https://github.com/calysto/metakernel/blob/master/metakernel/magics/README.md"
}
],
"mimetype": "text/x-octave",
"name": "scilab",
"version": "0.7.1"
}
},
"nbformat": 4,
"nbformat_minor": 0
}
|
