From 47d7279a724246ef7aa0f5359cf417992ed04449 Mon Sep 17 00:00:00 2001 From: hardythe1 Date: Wed, 3 Jun 2015 15:27:17 +0530 Subject: add books --- sample_notebooks/Ashish Kumar/Chapter4.ipynb | 274 +++++++++++++++++++++++++++ 1 file changed, 274 insertions(+) create mode 100755 sample_notebooks/Ashish Kumar/Chapter4.ipynb (limited to 'sample_notebooks/Ashish Kumar/Chapter4.ipynb') diff --git a/sample_notebooks/Ashish Kumar/Chapter4.ipynb b/sample_notebooks/Ashish Kumar/Chapter4.ipynb new file mode 100755 index 00000000..7bb63a05 --- /dev/null +++ b/sample_notebooks/Ashish Kumar/Chapter4.ipynb @@ -0,0 +1,274 @@ +{ + "metadata": { + "name": "", + "signature": "sha256:941e56f6ccff5ba339ab866b08ad29bc1dd7198143616d650879efd5b419c50b" + }, + "nbformat": 3, + "nbformat_minor": 0, + "worksheets": [ + { + "cells": [ + { + "cell_type": "heading", + "level": 1, + "metadata": {}, + "source": [ + "Chapter4 - Antenna Arrays" + ] + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example No. 4.9.1 : page-116" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "import math\n", + "#Given Data\n", + "le=100.0 #m\n", + "Irms=450.0 #A\n", + "f=40000.0 #Hz\n", + "c=3*10**8 #m/s (Speed of light)\n", + "l=c/f #wavelenght in m\n", + "P=160*math.pi**2*(le/l)**2*Irms**2 #mW\n", + "Rr=160*math.pi**2*(le/l)**2 #\u03a9\n", + "P*=10**-3 #W\n", + "print \"Power radiated is %0.2f W \" %P\n", + "print \"Radiation resistance is %0.2f \u03a9\" %Rr" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Power radiated is 56.85 W \n", + "Radiation resistance is 0.28 \u03a9\n" + ] + } + ], + "prompt_number": 13 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example No. 4.9.5 : page-119" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "import math\n", + "#Given Data\n", + "L=1.0 #m(Length of element)\n", + "f=10.0 #MHz(Operating frequency)\n", + "c=3*10**8 #m/s##Speed of light\n", + "l=c/(f*10**6) #m(Wavelength)\n", + "Rr=80*math.pi**2*(L/l)**2 #\u03a9(Radiation resistance)\n", + "print \"Radiation resistance is %0.2f \u03a9\" %Rr" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Radiation resistance is 0.88 \u03a9\n" + ] + } + ], + "prompt_number": 15 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example No. 4.9.4 : page-126" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "import math\n", + "#Data given\n", + "#l=lambda/8\n", + "lBYlambda=1.0/8 #(length/Wavelength)\n", + "Rr=80*math.pi**2*(lBYlambda)**2 #\u03a9(Radiation resistance)\n", + "print \"Radiation resistance is %0.2f \u03a9\" % Rr" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Radiation resistance is 12.34 \u03a9\n" + ] + } + ], + "prompt_number": 19 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example No. 4.9.3 : page-129" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "import math\n", + "#Data given\n", + "le=10.0 #m(effective length)\n", + "Rl=1.5 #\u03a9(resistance)\n", + "Irms=450.0 #A(rms current)\n", + "c=3*10**8 #m/s##Speed of light\n", + "l=c/(f*10**3) #m(Wavelength)\n", + "P=160*math.pi**2*(le/l)**2*Irms**2 #kW(Power)\n", + "P=P*1000 #W(Power)\n", + "Rr=160*math.pi**2*(le/l)**2 #\u03a9(Radiation resistance)\n", + "Eta=Rr/(Rr+Rl)*100 #%(Efficiency)\n", + "print \"Efficiency of antenna is %0.2f %%\" %Eta" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Efficiency of antenna is 0.01 %\n" + ] + } + ], + "prompt_number": 26 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example No. 4.6.1 : page-132" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "import math\n", + "#Data Given \n", + "l=1 #m\n", + "Prad=4 #W\n", + "f=1.5 #MHz\n", + "c=3*10**8 #m/s##Speed of light\n", + "l=c/(f*10**6) #m\n", + "#here l/lambda<1/50 tells us it is a Hertzian monopole antenna\n", + "h=1 #m\n", + "Rr=40*math.pi**2*(h/l)**2 #m\u03a9\n", + "Io=(2*Prad/Rr)**1.0/2 #A\n", + "print \"Current required is %0.2f A \"% Io" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Current required is 405.28 A \n" + ] + } + ], + "prompt_number": 31 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example No. 4.5.1 : page-136" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "# Data given\n", + "f=500.0 #MHz(Operating Frequency)\n", + "Do=1.643 #for half wave dipole\n", + "c=3*10**8 #m/s##Speed of light\n", + "l=c/(f*10**6) #m(Wavelength)\n", + "Aem=l**2/(4*math.pi)*Do #m\u00b2(Effective area)\n", + "print \"Effective area is %0.2f m\u00b2\" %Aem" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Effective area is 0.05 m\u00b2\n" + ] + } + ], + "prompt_number": 34 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example No. 4.9.2 : page-139" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "import math\n", + "# Data given\n", + "le=61.4 #m\n", + "Irms=50 #A\n", + "l=625 #m\n", + "P=160*math.pi**2*(le/l)**2*Irms**2 #kW\n", + "Rr=160*math.pi**2*(le/l)**2 #\u03a9\n", + "P*=10**-3 #kW\n", + "print \"Power radiated is %0.2f kW\" %P\n", + "print \"Radiation resistance is %0.2f \u03a9\"% Rr" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Power radiated is 38.10 kW\n", + "Radiation resistance is 15.24 \u03a9\n" + ] + } + ], + "prompt_number": 37 + } + ], + "metadata": {} + } + ] +} \ No newline at end of file -- cgit