Added(A)/Deleted(D) following books

 A  Engineering_Mechanics_of_Solids_by_Popov_E_P/Chapter1.ipynb
A  Engineering_Mechanics_of_Solids_by_Popov_E_P/chapter10.ipynb
A  Engineering_Mechanics_of_Solids_by_Popov_E_P/chapter11.ipynb
A  Engineering_Mechanics_of_Solids_by_Popov_E_P/chapter12.ipynb
A  Engineering_Mechanics_of_Solids_by_Popov_E_P/chapter2.ipynb
A  Engineering_Mechanics_of_Solids_by_Popov_E_P/chapter4.ipynb
A  Engineering_Mechanics_of_Solids_by_Popov_E_P/chapter5.ipynb
A  Engineering_Mechanics_of_Solids_by_Popov_E_P/chapter6.ipynb
A  Engineering_Mechanics_of_Solids_by_Popov_E_P/chapter7.ipynb
A  Engineering_Mechanics_of_Solids_by_Popov_E_P/chapter8.ipynb
A  Engineering_Mechanics_of_Solids_by_Popov_E_P/chapter9.ipynb
A  Engineering_Mechanics_of_Solids_by_Popov_E_P/charpter_3.ipynb
A  Engineering_Mechanics_of_Solids_by_Popov_E_P/charpter_3_1.ipynb
A  Engineering_Mechanics_of_Solids_by_Popov_E_P/screenshots/Untitled.png
A  Engineering_Mechanics_of_Solids_by_Popov_E_P/screenshots/cap2.png
A  Engineering_Mechanics_of_Solids_by_Popov_E_P/screenshots/cap3.png
A  Microwave_Engineering_by_G._S._Raghuvanshi/Ch1.ipynb
A  Microwave_Engineering_by_G._S._Raghuvanshi/Ch10.ipynb
A  Microwave_Engineering_by_G._S._Raghuvanshi/Ch11.ipynb
A  Microwave_Engineering_by_G._S._Raghuvanshi/Ch12.ipynb
A  Microwave_Engineering_by_G._S._Raghuvanshi/Ch2.ipynb
A  Microwave_Engineering_by_G._S._Raghuvanshi/Ch3.ipynb
A  Microwave_Engineering_by_G._S._Raghuvanshi/Ch4.ipynb
A  Microwave_Engineering_by_G._S._Raghuvanshi/Ch5.ipynb
A  Microwave_Engineering_by_G._S._Raghuvanshi/Ch6.ipynb
A  Microwave_Engineering_by_G._S._Raghuvanshi/Ch7.ipynb
A  Microwave_Engineering_by_G._S._Raghuvanshi/Ch8.ipynb
A  Microwave_Engineering_by_G._S._Raghuvanshi/Ch9.ipynb
A  Microwave_Engineering_by_G._S._Raghuvanshi/screenshots/12refCoeff.png
A  Microwave_Engineering_by_G._S._Raghuvanshi/screenshots/1RefCoeff.png
A  Microwave_Engineering_by_G._S._Raghuvanshi/screenshots/6axialPhasVel.png

1 files changed, 811 insertions, 0 deletions

diff --git a/Microwave_Engineering_by_G._S._Raghuvanshi/Ch1.ipynb b/Microwave_Engineering_by_G._S._Raghuvanshi/Ch1.ipynb
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@@ -0,0 +1,811 @@
+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:2baa3eb0c199078d6675540c13fc8ca69d0c0eaa0d2eef907c98727dce3b6cde"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "Ch-1 : Microwaves"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Page Number: 12 Example 1.2"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from __future__ import division\n",
+      "import cmath \n",
+      "from math import pi\n",
+      "#Given\n",
+      "z0=50 #ohm\n",
+      "zg=50 #ohm\n",
+      "l=0.25 #m\n",
+      "f=4e9 #hz\n",
+      "zl=100 #ohm\n",
+      "vg=10 #V\n",
+      "w=2*pi*f #rad/sec\n",
+      "c=3e8  #m/s\n",
+      "\n",
+      "#(i) Voltage and current at any point\n",
+      "tg=(zg-z0)/(zg+z0) \n",
+      "tl=(zl-z0)/(zl+z0) \n",
+      "vi=z0*vg/(z0+zg) #V\n",
+      "print 'Voltage at any point = %0.2f V' %(vi)\n",
+      "ii=vg/(2*z0) #A\n",
+      "print 'Current at any point = %0.2f A'%(ii) \n",
+      "\n",
+      "#(ii) Voltage at generator end\n",
+      "#Taking z=1\n",
+      "z=1 \n",
+      "bet=w/c \n",
+      "vz=(vg/2)*cmath.exp(-1J*bet*(z+l))*(1+(tl*cmath.exp(2*1J*bet*z))) #V\n",
+      "print 'Voltage at generator end ={:.3f}'.format(vz),'V'\n",
+      "iz=ii*cmath.exp(-1J*bet*(z+l))*(1-(tl*cmath.exp(2*1J*bet*z))) #A\n",
+      "vz1=(vg/2)*cmath.exp(-1J*bet*(z+l))*(1+(tl*cmath.exp(2*1J*bet*z))) #V\n",
+      "\n",
+      "#Voltage at load end, z=0\n",
+      "z11=0 \n",
+      "vl=(vg/2)*cmath.exp(-1J*bet*l)*(1+(tl*cmath.exp(2*1J*bet*z11))) #V\n",
+      "print 'Voltage at load end ={:.3f}'.format(vl),'V'\n",
+      "\n",
+      "#(iii) Reflection coefficient\n",
+      "zx=0.25 \n",
+      "tz=tl*cmath.exp(1J*2*bet*zx) \n",
+      "print 'Reflection coefficient:{:.3f}'.format(tz) \n",
+      "\n",
+      "#(iv) VSWR\n",
+      "p=(1+tl)/(1-tl) \n",
+      "print 'VSWR:' ,p\n",
+      "\n",
+      "#(v) Average power delivered to the load\n",
+      "vl=20/3 \n",
+      "pl0=vl**2/(2*zl) #W\n",
+      "print 'Average power delivered to the load = %0.2f W' %pl0"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Voltage at any point = 5.00 V\n",
+        "Current at any point = 0.10 A\n",
+        "Voltage at generator end =-0.833+4.330j V\n",
+        "Voltage at load end =-3.333-5.774j V\n",
+        "Reflection coefficient:-0.167-0.289j\n",
+        "VSWR: 2.0\n",
+        "Average power delivered to the load = 0.22 W\n"
+       ]
+      }
+     ],
+     "prompt_number": 41
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Page Number: 14 Example 1.3"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from math import log \n",
+      "#Given\n",
+      "pm=3 \n",
+      "pl=4 \n",
+      "l=24 #cm\n",
+      "l1=l/100 #m\n",
+      "\n",
+      "#Attenuation\n",
+      "tin=(pm-1)/(pm+1) \n",
+      "tl=(pl-1)/(pl+1) \n",
+      "alp=(1/(2*l1))*log(tl/tin) #Np/m\n",
+      "print 'Attenuation in the line = %0.2f'%alp,'Mp/m' "
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Attenuation in the line = 0.38 Mp/m\n"
+       ]
+      }
+     ],
+     "prompt_number": 42
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Page Number: 14 Example 1.4"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from math import sqrt \n",
+      "#Given\n",
+      "c=3e8  #m/s\n",
+      "z0=200 #ohm\n",
+      "zl=800 #ohm\n",
+      "f=30e6 #hz\n",
+      "\n",
+      "#Characterstic impedance\n",
+      "z00=sqrt(z0*zl) #ohm\n",
+      "print 'Characterstic impedance = %0.2f ohm' %z00\n",
+      "\n",
+      "#Length of line\n",
+      "lam=c/f #m\n",
+      "l=lam/4 #m\n",
+      "print 'Length of line = %0.2f m' %l"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Characterstic impedance = 400.00 ohm\n",
+        "Length of line = 2.50 m\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Page Number: 15 Example 1.5"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      " \n",
+      "#Given\n",
+      "l=1.2 #mH\n",
+      "r=8 #ohm\n",
+      "c=200e-12 #F\n",
+      "\n",
+      "#(i) Resonant frequency\n",
+      "f0=(1/(2*pi))*sqrt(1/(l*c)) #hz\n",
+      "print 'Resonant frequency:%0.2f'%f0,'Hz' \n",
+      "\n",
+      "#(ii) Impedance of circuit\n",
+      "print 'Impedance of circuit:',r,'ohm' \n",
+      "\n",
+      "#(iii)Q factor of the circuit\n",
+      "q=1/(2*pi*f0*c*r) \n",
+      "print 'Q factor of the circuit:%0.2f'%q\n",
+      "\n",
+      "#(iv) Bandwidth\n",
+      "df=f0/q #hz\n",
+      "\n",
+      "print  'Bandwidth:%0.2f' %df,'Hz'\n",
+      "\n",
+      "#The value of resonant frequency is calculated wrong in book\n",
+      "#Hence Q factor and bandwidth, all these answers dont match"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Resonant frequency:10273.41 Hz\n",
+        "Impedance of circuit: 8 ohm\n",
+        "Q factor of the circuit:9682.46\n",
+        "Bandwidth:1.06 Hz\n"
+       ]
+      }
+     ],
+     "prompt_number": 44
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Page Number: Example 1.6"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "from math import cos, sin\n",
+      "#Given\n",
+      "c=3e8  #m/s\n",
+      "le=25 #m\n",
+      "zl=40+(1J*30) #ohm\n",
+      "f=10e6 #hz\n",
+      "cap=40e-12 #F\n",
+      "l=300e-9 #H/m\n",
+      "\n",
+      "#Input impedance\n",
+      "z0=sqrt(l/cap) #ohm\n",
+      "zl1=zl/z0 \n",
+      "lam=c/f #m\n",
+      "bet=(2*pi*le)/lam #rad\n",
+      "zin=((zl1*cos(bet))+(1J*sin(bet)))/(cos(bet)+(1J*zl1*sin(bet))) #ohm\n",
+      "print 'Input impedance: {:.3f}'.format(zin), 'ohm'\n",
+      "\n",
+      "#Reflection coefficient\n",
+      "t=(zl1-1)/(zl1+1) \n",
+      "print 'Reflection coefficient:{:.3f}'.format(t)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Input impedance: 0.577-0.577j ohm\n",
+        "Reflection coefficient:-0.295+0.307j\n"
+       ]
+      }
+     ],
+     "prompt_number": 46
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Page Number: 16 Example 1.7"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "import cmath \n",
+      "#Given\n",
+      "c=3e8  #m/s\n",
+      "R=2.25 #ohm\n",
+      "L=1e-9 #H/m\n",
+      "C=1e-12 #F/m\n",
+      "f=0.5e9 #hz\n",
+      "G=0 \n",
+      "w=2*pi*f #rad/sec\n",
+      "\n",
+      "#Characterstic impedance\n",
+      "z0=cmath.sqrt((R+(1J*w*L))/(G+(1J*w*C)))  #ohm\n",
+      "print 'Characterstic impedance:{:.3f}'.format(z0),'ohm'\n",
+      "\n",
+      "#Propagation constant\n",
+      "gam=cmath.sqrt((R+(1J*w*L))*(G+(1J*w*C))) \n",
+      "print 'Propagation constant:{:.3f}'.format(gam)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Characterstic impedance:33.392-10.724j ohm\n",
+        "Propagation constant:0.034+0.105j\n"
+       ]
+      }
+     ],
+     "prompt_number": 48
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Page Number: 20 Example 1.8"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      " \n",
+      "#Given\n",
+      "c=3e8  #m/s\n",
+      "f=3e9  #Hz\n",
+      "ZL=50-(1J*100)  #ohms\n",
+      "Z0=50  #ohm\n",
+      "#Wavelength\n",
+      "lam=c/f \n",
+      "print 'Wavelength:',lam*100, 'cm'\n",
+      "\n",
+      "#Normalized load impedance\n",
+      "z=ZL/Z0 \n",
+      "print 'Normalized load impedance:' ,z\n",
+      "\n",
+      "#From chart\n",
+      "zin=0.45+(1J*1.2) \n",
+      "yin=0.27-(1J*0.73) \n",
+      "ZINN=Z0*zin \n",
+      "print 'Line impedance:' ,ZINN,'ohm'\n",
+      "YINN=yin/Z0 \n",
+      "print 'Line admittance:',YINN, 'mho'"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Wavelength: 10.0 cm\n",
+        "Normalized load impedance: (1-2j)\n",
+        "Line impedance: (22.5+60j) ohm\n",
+        "Line admittance: (0.0054-0.0146j) mho\n"
+       ]
+      }
+     ],
+     "prompt_number": 49
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Page Number: 22 Example 1.9"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      " \n",
+      "#Given\n",
+      "ZL=75+(1J*100)  #ohms\n",
+      "Z0=50  #ohm\n",
+      "\n",
+      "#Normalized load impedance\n",
+      "z=ZL/Z0 \n",
+      "print 'Normalized load impedance:' ,z\n",
+      "\n",
+      "#(i) 0.051*lam\n",
+      "#From chart\n",
+      "r=4.6 \n",
+      "Zi1=r*Z0 \n",
+      "print 'Input impedance at 0.051 lam:' ,Zi1,'ohm'\n",
+      "\n",
+      "#(ii) 0.102*lam\n",
+      "r1=1.5-(1J*2) \n",
+      "Zi2=r1*Z0 \n",
+      "print 'Input impedance at 0.102 lam:' ,Zi2,'ohm'\n",
+      " \n",
+      "#(iii) 0.301*lam\n",
+      "r2=0.22 \n",
+      "Zi3=r2*Z0 \n",
+      "print 'Input impedance at 0.301 lam:' ,Zi3, 'ohm'"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Normalized load impedance: (1.5+2j)\n",
+        "Input impedance at 0.051 lam: 230.0 ohm\n",
+        "Input impedance at 0.102 lam: (75-100j) ohm\n",
+        "Input impedance at 0.301 lam: 11.0 ohm\n"
+       ]
+      }
+     ],
+     "prompt_number": 50
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Page Number: 23 Example 1.10"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      " \n",
+      "#Given\n",
+      "ZL=15+(1J*20)  #ohms\n",
+      "Z0=50  #ohm\n",
+      "\n",
+      "#Normalized load impedance\n",
+      "z=ZL/Z0 \n",
+      "print 'Normalized load impedance:' ,z\n",
+      "\n",
+      "#From chart\n",
+      "T=0.6 \n",
+      "print 'Reflection coefficient:' ,T\n",
+      "\n",
+      "#VSWR\n",
+      "p=4 \n",
+      "print 'VSWR:' ,p"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Normalized load impedance: (0.3+0.4j)\n",
+        "Reflection coefficient: 0.6\n",
+        "VSWR: 4\n"
+       ]
+      }
+     ],
+     "prompt_number": 51
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Page Number: 25 Example 1.11"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      " \n",
+      "#Given\n",
+      "Z0=50  #ohm\n",
+      "p=2.4 \n",
+      "\n",
+      "#From chart\n",
+      "zl=1.4+1J \n",
+      "L=Z0*zl \n",
+      "print 'Load:',L, 'ohm'"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Load: (70+50j) ohm\n"
+       ]
+      }
+     ],
+     "prompt_number": 52
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Page Number: 26 Example 1.12"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      " \n",
+      "#Given\n",
+      "Z0=50  #ohm\n",
+      "T=2.23 \n",
+      "\n",
+      "#From chart\n",
+      "zl=2+1J \n",
+      "ZLd=Z0*zl \n",
+      "print 'Normalized impedance:',ZLd, 'ohm'\n",
+      "\n",
+      "#Impedance of device is by negating the real part\n",
+      "imp=-(ZLd.real)+((ZLd.imag)*1J) \n",
+      "print 'Impedance of device:' ,imp,'ohm'"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Normalized impedance: (100+50j) ohm\n",
+        "Impedance of device: (-100+50j) ohm\n"
+       ]
+      }
+     ],
+     "prompt_number": 53
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Page Number: 27 Example 1.13"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      " \n",
+      "#Given\n",
+      "p=3 \n",
+      "m1=54  #cm\n",
+      "m2=204  #cm\n",
+      "\n",
+      "#Point A\n",
+      "print 'Point A' \n",
+      "lam=4*(m2-m1) \n",
+      "dA=0.083*lam \n",
+      "L=m1-dA \n",
+      "print 'Location of stub:',L, 'cm'\n",
+      "IA=0.114*lam \n",
+      "print 'Length:' ,IA, 'cm'\n",
+      "\n",
+      "#Point B\n",
+      "print 'Point B' \n",
+      "dB=0.083*lam \n",
+      "IB=0.386*lam \n",
+      "Lb=dB+m1 \n",
+      "print 'Location of stub:',Lb, 'cm'"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Point A\n",
+        "Location of stub: 4.2 cm\n",
+        "Length: 68.4 cm\n",
+        "Point B\n",
+        "Location of stub: 103.8 cm\n"
+       ]
+      }
+     ],
+     "prompt_number": 54
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Page Number: 30 Example 1.15"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      " \n",
+      "#Given\n",
+      "Z0=50  #ohm\n",
+      "ZL=100  #ohms\n",
+      "f=10e9  #Hz\n",
+      "c=0.159e-12  #F\n",
+      "\n",
+      "#Normalized load impedance\n",
+      "z=ZL/Z0 \n",
+      "print 'Normalized load impedance:' ,z\n",
+      "\n",
+      "#From chart\n",
+      "zin=0.4+(1J*0.55) \n",
+      "ZINN=Z0*zin \n",
+      "print 'Normalized impedance:',ZINN, 'ohm'"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Normalized load impedance: 2.0\n",
+        "Normalized impedance: (20+27.5j) ohm\n"
+       ]
+      }
+     ],
+     "prompt_number": 55
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Page Number: 42 Example 1.16"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      " \n",
+      "#From given wave equation we can see\n",
+      "w=1e9 #rad/sec\n",
+      "bet=30 #rad/m\n",
+      "c=3e8  #m/s\n",
+      "u0=1  #let\n",
+      "e0=1/(9e16) \n",
+      "\n",
+      "vp=w/bet #m/sec\n",
+      "print 'Phase velocity:%0.2f' %vp,'m/s'\n",
+      "\n",
+      "e=1/(vp**2*u0) \n",
+      "er=e/(e0*u0) \n",
+      "print 'Dielectric constant:' ,er"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Phase velocity:33333333.33 m/s\n",
+        "Dielectric constant: 81.0\n"
+       ]
+      }
+     ],
+     "prompt_number": 56
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Page Number: 42 Example 1.17"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "#Given\n",
+      "c=3e8  #m/s\n",
+      "f=10e9 #hz\n",
+      "er=6 \n",
+      "tandel=2e-4 \n",
+      "\n",
+      "vp=c/er #m/sec\n",
+      "print 'Phase velocity: %0.f'%vp,'m/sec'\n",
+      "al=(pi*f*tandel)/vp #Np/m\n",
+      "print 'Attenuation constant: %0.3f'%al,'Np/m'\n",
+      "\n",
+      "#Answer for velocity is calculated wrong in book, hence answers dont match for both"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Phase velocity: 50000000 m/sec\n",
+        "Attenuation constant: 0.126 Np/m\n"
+       ]
+      }
+     ],
+     "prompt_number": 59
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Page Number: 43 Example 1.18"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      " #Given\n",
+      "er=2.2 \n",
+      "n0=377 #ohm\n",
+      "n2=n0/sqrt(er) #ohm\n",
+      "n1=377 #ohm\n",
+      "\n",
+      "#Reflection coefficient\n",
+      "t=(n2-n1)/(n2+n1) \n",
+      "print 'Reflection coefficient: %0.2f'%t\n",
+      "\n",
+      "#Vswr\n",
+      "#Taking mod of reflection coefficient\n",
+      "t1=-t \n",
+      "p=(1+t1)/(1-t1) \n",
+      "print 'VSWR: %0.3f'%p"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Reflection coefficient: -0.19\n",
+        "VSWR: 1.483\n"
+       ]
+      }
+     ],
+     "prompt_number": 62
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Page Number: 43 Example 1.19"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      " #Given\n",
+      "sig=5 #mohm/m\n",
+      "er=80*8.85e-12 \n",
+      "eaz=0.1 \n",
+      "u=1.26e-6 \n",
+      "\n",
+      "az=-log(0.1) \n",
+      "#(i) Range at 25Khz\n",
+      "f=25e3 #Khz\n",
+      "w=2*pi*f #rad/sec\n",
+      "a=w*(sqrt((u*er/2)*(sqrt(sig**2/(w**2*er**2)+1)-1))) \n",
+      "z=az/a #m\n",
+      "print 'Range at 25khz: %0.3f'%z, 'm'\n",
+      "\n",
+      "#(ii) Range at 25Mhz\n",
+      "f1=25e6 #Mhz\n",
+      "w1=2*pi*f1 #rad/sec\n",
+      "a1=w1*(sqrt((u*er/2)*(sqrt(sig**2/(w1**2*er**2)+1)-1))) \n",
+      "z1=az/a1 #m\n",
+      "print 'Range at 25Mhz: %0.3f'%z1, 'm'"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Range at 25khz: 3.273 m\n",
+        "Range at 25Mhz: 0.105 m\n"
+       ]
+      }
+     ],
+     "prompt_number": 63
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
\ No newline at end of file