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diff --git a/Antenna_and_Wave_Propagation_by_S._Wali/chapter9_1.ipynb b/Antenna_and_Wave_Propagation_by_S._Wali/chapter9_1.ipynb new file mode 100755 index 00000000..fa219e98 --- /dev/null +++ b/Antenna_and_Wave_Propagation_by_S._Wali/chapter9_1.ipynb @@ -0,0 +1,112 @@ +{ + "metadata": { + "name": "", + "signature": "sha256:a1c5dc80edceb1c26296c5ed290e825905396ed6d9e62f8196824c971236a909" + }, + "nbformat": 3, + "nbformat_minor": 0, + "worksheets": [ + { + "cells": [ + { + "cell_type": "heading", + "level": 1, + "metadata": {}, + "source": [ + "Chapter09, Horn Antenna" + ] + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example No. 9.6.1, page : 9-8" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "from __future__ import division\n", + "f=2 #GHz(Frequency)\n", + "G=12 #dBi(Gain)\n", + "D=12 #dBi(Gain)\n", + "D=10**(D/10) #unitless(Directivity)\n", + "c=3*10**8 #m/s(speed of light)\n", + "lamda=c/(f*10**9) #m(wavelength)\n", + "Ap=D*lamda**2/7.5 #m\u00b2(capture area)\n", + "print \"Required capture area = %0.4f m\u00b2 \"%Ap " + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Required capture area = 0.0475 m\u00b2 \n" + ] + } + ], + "prompt_number": 3 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example No. 9.6.2, page : 9-9" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "from math import sqrt, atan, pi, log10\n", + "aEBYlamda=10 #(Aperture/wavelength)\n", + "del_EBYlamda=0.2 #in E-plane\n", + "del_HBYlamda=0.375 #in H-plane\n", + "LBYlamda=aEBYlamda**2/8/del_EBYlamda #(Length/wavelength)\n", + "print \"Length of the horn is \",(LBYlamda),\"*lamda\" \n", + "aHBYlamda=sqrt(LBYlamda*8*del_HBYlamda) #(Aperture/wavelength)\n", + "print \"H-plane aperture, aH is \",round(aHBYlamda,2),\"*lamda\" \n", + "theta_E=2*atan(aEBYlamda/2/LBYlamda)*180/pi #degree(Angle)\n", + "theta_H=2*atan(aHBYlamda/2/LBYlamda)*180/pi #degree(Angle)\n", + "print \"Flare angles theta_E & theta_H = %0.2f & %0.2f degree \"%(theta_E,theta_H) \n", + "HPBW_E=56/aEBYlamda #degree(HPBW for E-plane)\n", + "print \"HPBW(E-plane) = %0.1f degree\"%(HPBW_E) \n", + "HPBW_H=67/aHBYlamda #degree(HPBW for H-plane)\n", + "print \"HPBW(H-plane) = %0.1f degree \" %HPBW_H \n", + "FNBW_E=102/aEBYlamda #degree(FNBW for E-plane)\n", + "print \"FNBW(E-plane) = %0.2f degree \" %FNBW_E \n", + "FNBW_H=172/aHBYlamda #degree(FNBW for F-plane)\n", + "print \"FNBW(H-plane) = %0.2f degree \"%FNBW_H \n", + "D=10*log10(7.5*aEBYlamda*aHBYlamda) #(Directivity)\n", + "print \"Directivity in dB : \", round(D,2)" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Length of the horn is 62.5 *lamda\n", + "H-plane aperture, aH is 13.69 *lamda\n", + "Flare angles theta_E & theta_H = 9.15 & 12.50 degree \n", + "HPBW(E-plane) = 5.6 degree\n", + "HPBW(H-plane) = 4.9 degree \n", + "FNBW(E-plane) = 10.20 degree \n", + "FNBW(H-plane) = 12.56 degree \n", + "Directivity in dB : 30.12\n" + ] + } + ], + "prompt_number": 14 + } + ], + "metadata": {} + } + ] +}
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