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author | Thomas Stephen Lee | 2015-08-28 16:53:23 +0530 |
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committer | Thomas Stephen Lee | 2015-08-28 16:53:23 +0530 |
commit | 4a1f703f1c1808d390ebf80e80659fe161f69fab (patch) | |
tree | 31b43ae8895599f2d13cf19395d84164463615d9 /Antenna_and_Wave_Propagation_by_S._Wali/chapter14.ipynb | |
parent | 9d260e6fae7328d816a514130b691fbd0e9ef81d (diff) | |
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diff --git a/Antenna_and_Wave_Propagation_by_S._Wali/chapter14.ipynb b/Antenna_and_Wave_Propagation_by_S._Wali/chapter14.ipynb new file mode 100644 index 00000000..1b3a9c64 --- /dev/null +++ b/Antenna_and_Wave_Propagation_by_S._Wali/chapter14.ipynb @@ -0,0 +1,300 @@ +{ + "metadata": { + "name": "", + "signature": "sha256:0174690c77909c04b196794e86400339cc9b848d5d1c10d76a582a253b10cfc2" + }, + "nbformat": 3, + "nbformat_minor": 0, + "worksheets": [ + { + "cells": [ + { + "cell_type": "heading", + "level": 1, + "metadata": {}, + "source": [ + "Chapter14, ground Wave Propagation" + ] + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example No. 14.6.1, page : 14-11" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "from math import log10\n", + "d=36000 #km(height of satellite)\n", + "f=4000 #MHz(frequency)\n", + "GT=20 #dB(Transmitter gain)\n", + "GR=40 #dB(Reciever gain)\n", + "PT=200 #W(Transmitted power)\n", + "PT=10*log10(PT) #dB(Transmitted power)\n", + "print \"Part (i):\" \n", + "Ls=32.44+20*log10(f)+20*log10(d) #dB(Free space transmission loss)\n", + "print \"\\tFree space transmission loss = %0.2f dB \"%Ls \n", + "print \"Part (ii):\" \n", + "PT=200 #W(Transmitted power)\n", + "PT_dB=10*log10(PT) #dB(Transmitted power)\n", + "PR_dB=PT_dB+GT+GR-Ls #dB(Recieved power)\n", + "PR=10**(PR_dB/10) #W(Recieved power)\n", + "print \"\\tReceived power = %0.2f pW \"%(PR*10**12)" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Part (i):\n", + "\tFree space transmission loss = 195.61 dB \n", + "Part (ii):\n", + "\tReceived power = 5.50 pW \n" + ] + } + ], + "prompt_number": 1 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example No. 14.6.2, page : 14-12" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "from math import log10, sqrt, pi\n", + "\n", + "f=150 #MHz(frequency)\n", + "c=3*10**8 #m/s(speed of light)\n", + "GT=1.64 #dB(Transmitter gain)\n", + "PT=20 #W(Transmitted power)\n", + "d=50 #km(distance)\n", + "lamda=c/(f*10**6) #m(Wavelength)\n", + "E=sqrt(30*GT*PT)/(d*1000) #V/m(emf induced)\n", + "le=lamda/pi #m(Effective length)\n", + "Voc=E*le #V/m(Open circuit voltage)\n", + "print \"Open circuit voltage = %0.2f micro Volt \"%(Voc*10**6) " + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Open circuit voltage = 399.40 micro Volt \n" + ] + } + ], + "prompt_number": 4 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example No. 14.10.1, page : 14-24" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "from math import log10, sqrt, pi\n", + "\n", + "ht=100 #m(transmitter height)\n", + "hr=100 #m(receiver height)\n", + "d=3.57*(sqrt(ht)+sqrt(hr)) #km(Range)\n", + "print \"Range of space wave propagation = %0.2f km \"%d " + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Range of space wave propagation = 71.40 km \n" + ] + } + ], + "prompt_number": 5 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example No. 14.10.2, page : 14-27" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "from math import sqrt, pi\n", + "\n", + "ht=100 #feet(transmitter height)\n", + "hr=50 #feet(receiver height)\n", + "d=1.4142*(sqrt(ht)+sqrt(hr)) #miles(Range)\n", + "print \"Radio horizon = %0.2f miles \"%d " + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Radio horizon = 24.14 miles \n" + ] + } + ], + "prompt_number": 6 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example No. 14.10.3, page : 14-28" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "from math import sqrt\n", + "ht=80 #m(transmitter height)\n", + "hr=50 #m(receiver height)\n", + "d=4.12*(sqrt(ht)+sqrt(hr)) #km(Range)\n", + "print \"Maximum distance = %0.2f km \"%d " + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Maximum distance = 65.98 km \n" + ] + } + ], + "prompt_number": 7 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example No. 14.10.4, page : 14-28" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "from math import sqrt\n", + "ht=100 #m(transmitter height)\n", + "d=80 #km(receiver height)\n", + "hr=(d/4.12-sqrt(ht))**2 #m(range)\n", + "print \"Required height of receiving antenna = %0.2f meter \"%hr " + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Required height of receiving antenna = 88.69 meter \n" + ] + } + ], + "prompt_number": 8 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example No. 14.10.5, page : 14-28" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "ht=100 #m(transmitter height)\n", + "d=4.12*sqrt(ht) #km(Horizon distance)\n", + "print \"Horizon distance = %0.2f km \"%d " + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Horizon distance = 41.20 km \n" + ] + } + ], + "prompt_number": 9 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example No. 14.10.6, page : 14-36" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "from math import sqrt\n", + "P=35 #W(Transmitter power\n", + "ht=45 #m(transmitter height)\n", + "hr=25 #m(receiver height)\n", + "f=90 #MHz(frequency)\n", + "c=3*10**8 #m/s(Speed of light)\n", + "d=4.12*(sqrt(ht)+sqrt(hr)) #km(line of sight distance)\n", + "print \"Distance of line of sight communication = %0.2f km \"%d \n", + "lamda=c/(f*10**6) #m(Wavelength)\n", + "ER=88*sqrt(P)*ht*hr/(lamda*(d*1000)**2) #V/m(Field strength)\n", + "print \"Field strength = %0.2f micro Volt/meter \"%(ER*10**6) \n", + "#Answer is wrong in the textbook." + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Distance of line of sight communication = 48.24 km \n", + "Field strength = 83.90 micro Volt/meter \n" + ] + } + ], + "prompt_number": 11 + } + ], + "metadata": {} + } + ] +}
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