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diff --git a/sample_notebooks/NIKHILESH DAMLE/ANTENNAS_AND_WAVE_PROPAGATION_BY_U.A_BAKSHI,_A.V_BAKSHI,_K.A_BAKSHI.ipynb b/sample_notebooks/NIKHILESH DAMLE/ANTENNAS_AND_WAVE_PROPAGATION_BY_U.A_BAKSHI,_A.V_BAKSHI,_K.A_BAKSHI.ipynb
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@@ -0,0 +1,462 @@
+{
+ "metadata": {
+ "name": "",
+ "signature": "sha256:02197244985b7dfa2823dacf9fac72c0a7536b50c383ffa1801ccf3066222ec3"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+ {
+ "cells": [
+ {
+ "cell_type": "heading",
+ "level": 1,
+ "metadata": {},
+ "source": [
+ "Radiation"
+ ]
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.7.1, PAGE NO.-30"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "\n",
+ "# Variable declaration\n",
+ "\n",
+ "I_m = 15 #Current in Ampere\n",
+ "P_rad = 6 #Power radiated in kW\n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "# By formula\n",
+ "I_rms = I_m/math.sqrt(2) #I_rms is r.m.s. current\n",
+ "\n",
+ "R_rad = P_rad/(I_rms**2) #R_rad is radiation resistance\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"The radiation resistance of Antenna is\",round(R_rad*1000,2),\"kW\"\n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The radiation resistance of Antenna is 53.33 kW\n"
+ ]
+ }
+ ]
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.9.1,PAGE NO.-42"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "from __future__ import division\n",
+ "from math import sin,cos,pi,sqrt \n",
+ "from sympy import Symbol\n",
+ "\n",
+ "# Variable Declaration\n",
+ "\n",
+ "Lm = Symbol('Lm') # Taking lamda as Lm\n",
+ "dL = Lm/25 # Length of dipole for Hertian dipole\n",
+ "H_phi = 5 # Magnetic field strength in uA/m\n",
+ "theta = pi/2\n",
+ "r = 2 # Distance in Km\n",
+ "dL_1 = Lm/2 # Length of dipole for Half wave dipole \n",
+ "R_rad = 73 # Radiation resistance for half wave dipole in ohm\n",
+ "R_rad1 = 36.5 # Radiation resistance for quarter wave monopole in ohm\n",
+ "dL_2 = Lm/4 # Length of dipole for quarter wave monopole \n",
+ "\n",
+ "# Calculation\n",
+ "\n",
+ "# By formula : H_phi = I_m*dL*sin(theta)/2*Lm*r\n",
+ "I_m = (H_phi*2*Lm*r)/(dL*sin(theta))\n",
+ "I_rms = I_m/sqrt(2)\n",
+ "P_rad = 80*(pi**2)*((dL/Lm)**2)*(I_rms**2)\n",
+ "I_m1 = (H_phi*2*pi*r*sin(theta))/(cos(pi/2*cos(theta)))\n",
+ "I_rms1 = I_m1/sqrt(2)\n",
+ "P_rad1 = (I_rms1**2)*R_rad\n",
+ "P_rad2 = (I_rms1**2)*R_rad1\n",
+ "\n",
+ "# Result\n",
+ "\n",
+ "print \" The power radiated by hertzian dipole is \",round(P_rad*10**-3,2),\"mW\"\n",
+ "print \" The power radiated by half wave dipole is \",round(P_rad1*10**-3,2),\"mW\"\n",
+ "print \" The power radiated by Quarter wave monopole is \",round(P_rad2*10**-3,2),\"mW\"\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.9.2,PAGE NO.-43"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "from __future__ import division\n",
+ "from math import sin,cos,pi,sqrt\n",
+ "\n",
+ "\n",
+ "\n",
+ "#variable declaration \n",
+ "\n",
+ "\n",
+ "E_theta = 10*(10**(-6)) #Electric field strength in V/m\n",
+ "theta = pi/2 #observation angle\n",
+ "r = 500*(10**3) #distance in metrs\n",
+ "f = 50*(10**6) #frequency in Hertz\n",
+ "c = 3*(10**8) #speed of light in m/sec\n",
+ "R_rad = 73 #for half wave dipole Radiation resistance in ohms\n",
+ "\n",
+ "\n",
+ "# calculation\n",
+ "lamda = c/f\n",
+ "L = lamda/2 #L is the length of half wave dipole\n",
+ "# formula : E=((60*I_m)/r)*((cos(pi/2*cos(theta)))*sin(theta))\n",
+ "I_m = (E_theta*r*sin(theta))/(60*cos(pi/2*cos(theta)))\n",
+ "I_rms = I_m/sqrt(2)\n",
+ "P_avg = (R_rad*(I_m**2))/2\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"Length of Dipole is\" ,round(L,2),\"metres\"\n",
+ "print \"Current fed to Antenna\",round(I_rms*1000,2),\"mA\"\n",
+ "print \"Average Power\",round(P_avg*1000,2),\"mW\"\n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.9.3,PAGE NO.-44"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "from __future__ import division\n",
+ "from math import pi,sqrt\n",
+ "\n",
+ "# variable declaration\n",
+ "\n",
+ "l_eff = 100 #effective hieght in m\n",
+ "f = 60*(10**3) #frequency in Hertz\n",
+ "r = 100*(10**3) #Distance in m\n",
+ "c = 3*(10**8) #Speed of light in m/sec\n",
+ "P_rad = 100*(10**3) #radiated power\n",
+ "\n",
+ "# calculation\n",
+ "\n",
+ "lamda = c/f\n",
+ "R_rad = 160*(pi**2)*((l_eff/lamda)**2)\n",
+ "I_rms = sqrt(P_rad/R_rad)\n",
+ "E_rms = (120*pi*l_eff*(I_rms**2))/(lamda*r)\n",
+ "\n",
+ "# Results\n",
+ "\n",
+ "print \"Strength of Electric field\",round(E_rms,2),\"V/m\"\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.9.4,PAGE NO.-45"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "from __future__ import division\n",
+ "from math import pi\n",
+ "\n",
+ "# variable declaration\n",
+ "\n",
+ "l_eff = 113.3 #Effective length in metres\n",
+ "lamda = 18.8 #Wavelength in metres\n",
+ "I_rms = 725 #Base current in Ampere\n",
+ "r = 175 #Distance in metre\n",
+ "Eta_o = 120*pi\n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "E = (120*pi*l_eff*I_rms)/(lamda*r)\n",
+ "H = E/Eta_o\n",
+ "R_rad = 160*(pi**2)*((l_eff/lamda)**2)\n",
+ "P_rad = (I_rms**2)*(R_rad)\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"The electric field at a distance r is \",round(E*0.001,2),\"mV/m\"\n",
+ "print \"The H field is\",round(H,2),\"uA/m\"\n",
+ "print \"The power radiated by Antenna is \",round(P_rad*(10**(-9)),2),\"kW\"\n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.9.5,PAGE NO.-46"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "from __future__ import division\n",
+ "from math import pi,sin\n",
+ "\n",
+ "# variable declaration\n",
+ "\n",
+ "lamda = 10*(10**(-2)) # In cm\n",
+ "r = 200*(10**(-2)) # In cm\n",
+ "theta = 90 # In Degrees\n",
+ "phi = 0 # In Degrees\n",
+ "IdL = 3*(10**(-4)) # current distribution in Am\n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "E_theta = (60*pi*IdL*sin(theta))/(lamda*r)\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"The magnitude of component E_theta is \",round(E_theta,2),\"V/m\"\n",
+ "\n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.9.6,PAGE NO.-46"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "from __future__ import division\n",
+ "from math import pi\n",
+ "\n",
+ "# variable declaration\n",
+ "\n",
+ "dL = lamda/12\n",
+ "\n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "R_rad = 80*(pi**2)*((dL/lamda)**2)\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"The Radiation resistance of dipole antenna is \",round(R_rad,2),\"ohm\"\n",
+ "\n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.9.7,PAGE NO.-46"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "from __future__ import division\n",
+ "from math import pi,sqrt\n",
+ "from sympy import Symbol\n",
+ "# variable declaration\n",
+ "\n",
+ "I_m = 100 # uniform current in ampere\n",
+ "Lm = Symbol('Lm') #Taking Lm as lamda\n",
+ "dL = Lm/16\n",
+ "\n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "P_rad = 80*(pi**2)*((dL/Lm)**2)*((I_m/sqrt(2))**2)\n",
+ "R_rad = 80*(pi**2)*((dL/Lm)**2)\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"The Radiation resistance of dipole is \",round(R_rad,2),\"ohm\"\n",
+ "\n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.9.8,PAGE NO.-47"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "# variable declaration\n",
+ "\n",
+ "f = 30*(10**6) #Frequency in Hz\n",
+ "c = 3*(10**8) #speed of light in m/s\n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "lamda = c/f\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"The Length of Half wave dipole is \",round((lamda/2),2),\"m\"\n",
+ "\n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.9.10,PAGE NO.-48"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "from __future__ import division\n",
+ "from math import pi,sin,sqrt \n",
+ "from sympy import Symbol\n",
+ "# variable declaration\n",
+ "\n",
+ "Lm = Symbol('Lm') # Taking lamda as Lm\n",
+ "dL = 0.01*Lm # Length of dipole \n",
+ "theta = 45\n",
+ "P_rad = 1 # Power radiated in kW\n",
+ "phi = 90\n",
+ "r = 1 # Distance in Km\n",
+ "Eta_o=120*pi\n",
+ "\n",
+ "\n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "R_rad = 20*(pi**2)*((dL/Lm)**2)\n",
+ "I_m = sqrt(2*P_rad*R_rad)\n",
+ "\n",
+ "# formula : P = (Eta_o/2)*(((Omega*I_m*dL*sin(theta))/(4*pi*r*v))**2)\n",
+ "P = (Eta_o/2)*(((I_m*dL*sin(theta))/(4*pi*(r**2)))**2)\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"The Power density is \",P,\"Watt/m^2\"\n",
+ "\n",
+ "# Note : The Solving in the book is wrong they put 0.1 instead of 0.1*lamda \n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.9.11,PAGE NO.-49"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "from __future__ import division\n",
+ "from math import pi \n",
+ "\n",
+ "# variable declaration\n",
+ "\n",
+ "dL = 75 #Length of dipole in m\n",
+ "f = 800 # Frequency in kHz\n",
+ "I_rms = 10 #rms Current in Amp\n",
+ "c = 3*(10**8) #Speed of light in m/s \n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "lamda = c/f\n",
+ "P_rad = 80*(pi**2)*((dL/lamda)**2)*(I_rms**2)\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"The Total Power radiated by Antenna is \",round(P_rad*1000,2),\"kW\"\n",
+ "\n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ }
+ ],
+ "metadata": {}
+ }
+ ]
+} \ No newline at end of file
diff --git a/sample_notebooks/NIKHILESH DAMLE/ANTENNAS_AND_WAVE_PROPAGATION_BY_U.A_BAKSHI,_A.V_BAKSHI,_K.A_BAKSHI_1.ipynb b/sample_notebooks/NIKHILESH DAMLE/ANTENNAS_AND_WAVE_PROPAGATION_BY_U.A_BAKSHI,_A.V_BAKSHI,_K.A_BAKSHI_1.ipynb
new file mode 100755
index 00000000..e025dd86
--- /dev/null
+++ b/sample_notebooks/NIKHILESH DAMLE/ANTENNAS_AND_WAVE_PROPAGATION_BY_U.A_BAKSHI,_A.V_BAKSHI,_K.A_BAKSHI_1.ipynb
@@ -0,0 +1,462 @@
+{
+ "metadata": {
+ "name": "",
+ "signature": "sha256:02197244985b7dfa2823dacf9fac72c0a7536b50c383ffa1801ccf3066222ec3"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+ {
+ "cells": [
+ {
+ "cell_type": "heading",
+ "level": 1,
+ "metadata": {},
+ "source": [
+ "Radiation"
+ ]
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.7.1, PAGE NO.-30"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "\n",
+ "# Variable declaration\n",
+ "\n",
+ "I_m = 15 #Current in Ampere\n",
+ "P_rad = 6 #Power radiated in kW\n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "# By formula\n",
+ "I_rms = I_m/math.sqrt(2) #I_rms is r.m.s. current\n",
+ "\n",
+ "R_rad = P_rad/(I_rms**2) #R_rad is radiation resistance\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"The radiation resistance of Antenna is\",round(R_rad*1000,2),\"kW\"\n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The radiation resistance of Antenna is 53.33 kW\n"
+ ]
+ }
+ ]
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.9.1,PAGE NO.-42"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "from __future__ import division\n",
+ "from math import sin,cos,pi,sqrt \n",
+ "from sympy import Symbol\n",
+ "\n",
+ "# Variable Declaration\n",
+ "\n",
+ "Lm = Symbol('Lm') # Taking lamda as Lm\n",
+ "dL = Lm/25 # Length of dipole for Hertian dipole\n",
+ "H_phi = 5 # Magnetic field strength in uA/m\n",
+ "theta = pi/2\n",
+ "r = 2 # Distance in Km\n",
+ "dL_1 = Lm/2 # Length of dipole for Half wave dipole \n",
+ "R_rad = 73 # Radiation resistance for half wave dipole in ohm\n",
+ "R_rad1 = 36.5 # Radiation resistance for quarter wave monopole in ohm\n",
+ "dL_2 = Lm/4 # Length of dipole for quarter wave monopole \n",
+ "\n",
+ "# Calculation\n",
+ "\n",
+ "# By formula : H_phi = I_m*dL*sin(theta)/2*Lm*r\n",
+ "I_m = (H_phi*2*Lm*r)/(dL*sin(theta))\n",
+ "I_rms = I_m/sqrt(2)\n",
+ "P_rad = 80*(pi**2)*((dL/Lm)**2)*(I_rms**2)\n",
+ "I_m1 = (H_phi*2*pi*r*sin(theta))/(cos(pi/2*cos(theta)))\n",
+ "I_rms1 = I_m1/sqrt(2)\n",
+ "P_rad1 = (I_rms1**2)*R_rad\n",
+ "P_rad2 = (I_rms1**2)*R_rad1\n",
+ "\n",
+ "# Result\n",
+ "\n",
+ "print \" The power radiated by hertzian dipole is \",round(P_rad*10**-3,2),\"mW\"\n",
+ "print \" The power radiated by half wave dipole is \",round(P_rad1*10**-3,2),\"mW\"\n",
+ "print \" The power radiated by Quarter wave monopole is \",round(P_rad2*10**-3,2),\"mW\"\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.9.2,PAGE NO.-43"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "from __future__ import division\n",
+ "from math import sin,cos,pi,sqrt\n",
+ "\n",
+ "\n",
+ "\n",
+ "#variable declaration \n",
+ "\n",
+ "\n",
+ "E_theta = 10*(10**(-6)) #Electric field strength in V/m\n",
+ "theta = pi/2 #observation angle\n",
+ "r = 500*(10**3) #distance in metrs\n",
+ "f = 50*(10**6) #frequency in Hertz\n",
+ "c = 3*(10**8) #speed of light in m/sec\n",
+ "R_rad = 73 #for half wave dipole Radiation resistance in ohms\n",
+ "\n",
+ "\n",
+ "# calculation\n",
+ "lamda = c/f\n",
+ "L = lamda/2 #L is the length of half wave dipole\n",
+ "# formula : E=((60*I_m)/r)*((cos(pi/2*cos(theta)))*sin(theta))\n",
+ "I_m = (E_theta*r*sin(theta))/(60*cos(pi/2*cos(theta)))\n",
+ "I_rms = I_m/sqrt(2)\n",
+ "P_avg = (R_rad*(I_m**2))/2\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"Length of Dipole is\" ,round(L,2),\"metres\"\n",
+ "print \"Current fed to Antenna\",round(I_rms*1000,2),\"mA\"\n",
+ "print \"Average Power\",round(P_avg*1000,2),\"mW\"\n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.9.3,PAGE NO.-44"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "from __future__ import division\n",
+ "from math import pi,sqrt\n",
+ "\n",
+ "# variable declaration\n",
+ "\n",
+ "l_eff = 100 #effective hieght in m\n",
+ "f = 60*(10**3) #frequency in Hertz\n",
+ "r = 100*(10**3) #Distance in m\n",
+ "c = 3*(10**8) #Speed of light in m/sec\n",
+ "P_rad = 100*(10**3) #radiated power\n",
+ "\n",
+ "# calculation\n",
+ "\n",
+ "lamda = c/f\n",
+ "R_rad = 160*(pi**2)*((l_eff/lamda)**2)\n",
+ "I_rms = sqrt(P_rad/R_rad)\n",
+ "E_rms = (120*pi*l_eff*(I_rms**2))/(lamda*r)\n",
+ "\n",
+ "# Results\n",
+ "\n",
+ "print \"Strength of Electric field\",round(E_rms,2),\"V/m\"\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.9.4,PAGE NO.-45"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "from __future__ import division\n",
+ "from math import pi\n",
+ "\n",
+ "# variable declaration\n",
+ "\n",
+ "l_eff = 113.3 #Effective length in metres\n",
+ "lamda = 18.8 #Wavelength in metres\n",
+ "I_rms = 725 #Base current in Ampere\n",
+ "r = 175 #Distance in metre\n",
+ "Eta_o = 120*pi\n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "E = (120*pi*l_eff*I_rms)/(lamda*r)\n",
+ "H = E/Eta_o\n",
+ "R_rad = 160*(pi**2)*((l_eff/lamda)**2)\n",
+ "P_rad = (I_rms**2)*(R_rad)\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"The electric field at a distance r is \",round(E*0.001,2),\"mV/m\"\n",
+ "print \"The H field is\",round(H,2),\"uA/m\"\n",
+ "print \"The power radiated by Antenna is \",round(P_rad*(10**(-9)),2),\"kW\"\n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.9.5,PAGE NO.-46"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "from __future__ import division\n",
+ "from math import pi,sin\n",
+ "\n",
+ "# variable declaration\n",
+ "\n",
+ "lamda = 10*(10**(-2)) # In cm\n",
+ "r = 200*(10**(-2)) # In cm\n",
+ "theta = 90 # In Degrees\n",
+ "phi = 0 # In Degrees\n",
+ "IdL = 3*(10**(-4)) # current distribution in Am\n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "E_theta = (60*pi*IdL*sin(theta))/(lamda*r)\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"The magnitude of component E_theta is \",round(E_theta,2),\"V/m\"\n",
+ "\n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.9.6,PAGE NO.-46"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "from __future__ import division\n",
+ "from math import pi\n",
+ "\n",
+ "# variable declaration\n",
+ "\n",
+ "dL = lamda/12\n",
+ "\n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "R_rad = 80*(pi**2)*((dL/lamda)**2)\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"The Radiation resistance of dipole antenna is \",round(R_rad,2),\"ohm\"\n",
+ "\n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.9.7,PAGE NO.-46"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "from __future__ import division\n",
+ "from math import pi,sqrt\n",
+ "from sympy import Symbol\n",
+ "# variable declaration\n",
+ "\n",
+ "I_m = 100 # uniform current in ampere\n",
+ "Lm = Symbol('Lm') #Taking Lm as lamda\n",
+ "dL = Lm/16\n",
+ "\n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "P_rad = 80*(pi**2)*((dL/Lm)**2)*((I_m/sqrt(2))**2)\n",
+ "R_rad = 80*(pi**2)*((dL/Lm)**2)\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"The Radiation resistance of dipole is \",round(R_rad,2),\"ohm\"\n",
+ "\n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.9.8,PAGE NO.-47"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "# variable declaration\n",
+ "\n",
+ "f = 30*(10**6) #Frequency in Hz\n",
+ "c = 3*(10**8) #speed of light in m/s\n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "lamda = c/f\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"The Length of Half wave dipole is \",round((lamda/2),2),\"m\"\n",
+ "\n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.9.10,PAGE NO.-48"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "from __future__ import division\n",
+ "from math import pi,sin,sqrt \n",
+ "from sympy import Symbol\n",
+ "# variable declaration\n",
+ "\n",
+ "Lm = Symbol('Lm') # Taking lamda as Lm\n",
+ "dL = 0.01*Lm # Length of dipole \n",
+ "theta = 45\n",
+ "P_rad = 1 # Power radiated in kW\n",
+ "phi = 90\n",
+ "r = 1 # Distance in Km\n",
+ "Eta_o=120*pi\n",
+ "\n",
+ "\n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "R_rad = 20*(pi**2)*((dL/Lm)**2)\n",
+ "I_m = sqrt(2*P_rad*R_rad)\n",
+ "\n",
+ "# formula : P = (Eta_o/2)*(((Omega*I_m*dL*sin(theta))/(4*pi*r*v))**2)\n",
+ "P = (Eta_o/2)*(((I_m*dL*sin(theta))/(4*pi*(r**2)))**2)\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"The Power density is \",P,\"Watt/m^2\"\n",
+ "\n",
+ "# Note : The Solving in the book is wrong they put 0.1 instead of 0.1*lamda \n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.9.11,PAGE NO.-49"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "from __future__ import division\n",
+ "from math import pi \n",
+ "\n",
+ "# variable declaration\n",
+ "\n",
+ "dL = 75 #Length of dipole in m\n",
+ "f = 800 # Frequency in kHz\n",
+ "I_rms = 10 #rms Current in Amp\n",
+ "c = 3*(10**8) #Speed of light in m/s \n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "lamda = c/f\n",
+ "P_rad = 80*(pi**2)*((dL/lamda)**2)*(I_rms**2)\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"The Total Power radiated by Antenna is \",round(P_rad*1000,2),\"kW\"\n",
+ "\n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ }
+ ],
+ "metadata": {}
+ }
+ ]
+} \ No newline at end of file
diff --git a/sample_notebooks/NIKHILESH DAMLE/ANTENNAS_AND_WAVE_PROPAGATION_BY_U.A_BAKSHI,_A.V_BAKSHI,_K.A_BAKSHI_2.ipynb b/sample_notebooks/NIKHILESH DAMLE/ANTENNAS_AND_WAVE_PROPAGATION_BY_U.A_BAKSHI,_A.V_BAKSHI,_K.A_BAKSHI_2.ipynb
new file mode 100755
index 00000000..e025dd86
--- /dev/null
+++ b/sample_notebooks/NIKHILESH DAMLE/ANTENNAS_AND_WAVE_PROPAGATION_BY_U.A_BAKSHI,_A.V_BAKSHI,_K.A_BAKSHI_2.ipynb
@@ -0,0 +1,462 @@
+{
+ "metadata": {
+ "name": "",
+ "signature": "sha256:02197244985b7dfa2823dacf9fac72c0a7536b50c383ffa1801ccf3066222ec3"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+ {
+ "cells": [
+ {
+ "cell_type": "heading",
+ "level": 1,
+ "metadata": {},
+ "source": [
+ "Radiation"
+ ]
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.7.1, PAGE NO.-30"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "\n",
+ "# Variable declaration\n",
+ "\n",
+ "I_m = 15 #Current in Ampere\n",
+ "P_rad = 6 #Power radiated in kW\n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "# By formula\n",
+ "I_rms = I_m/math.sqrt(2) #I_rms is r.m.s. current\n",
+ "\n",
+ "R_rad = P_rad/(I_rms**2) #R_rad is radiation resistance\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"The radiation resistance of Antenna is\",round(R_rad*1000,2),\"kW\"\n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The radiation resistance of Antenna is 53.33 kW\n"
+ ]
+ }
+ ]
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.9.1,PAGE NO.-42"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "from __future__ import division\n",
+ "from math import sin,cos,pi,sqrt \n",
+ "from sympy import Symbol\n",
+ "\n",
+ "# Variable Declaration\n",
+ "\n",
+ "Lm = Symbol('Lm') # Taking lamda as Lm\n",
+ "dL = Lm/25 # Length of dipole for Hertian dipole\n",
+ "H_phi = 5 # Magnetic field strength in uA/m\n",
+ "theta = pi/2\n",
+ "r = 2 # Distance in Km\n",
+ "dL_1 = Lm/2 # Length of dipole for Half wave dipole \n",
+ "R_rad = 73 # Radiation resistance for half wave dipole in ohm\n",
+ "R_rad1 = 36.5 # Radiation resistance for quarter wave monopole in ohm\n",
+ "dL_2 = Lm/4 # Length of dipole for quarter wave monopole \n",
+ "\n",
+ "# Calculation\n",
+ "\n",
+ "# By formula : H_phi = I_m*dL*sin(theta)/2*Lm*r\n",
+ "I_m = (H_phi*2*Lm*r)/(dL*sin(theta))\n",
+ "I_rms = I_m/sqrt(2)\n",
+ "P_rad = 80*(pi**2)*((dL/Lm)**2)*(I_rms**2)\n",
+ "I_m1 = (H_phi*2*pi*r*sin(theta))/(cos(pi/2*cos(theta)))\n",
+ "I_rms1 = I_m1/sqrt(2)\n",
+ "P_rad1 = (I_rms1**2)*R_rad\n",
+ "P_rad2 = (I_rms1**2)*R_rad1\n",
+ "\n",
+ "# Result\n",
+ "\n",
+ "print \" The power radiated by hertzian dipole is \",round(P_rad*10**-3,2),\"mW\"\n",
+ "print \" The power radiated by half wave dipole is \",round(P_rad1*10**-3,2),\"mW\"\n",
+ "print \" The power radiated by Quarter wave monopole is \",round(P_rad2*10**-3,2),\"mW\"\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.9.2,PAGE NO.-43"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "from __future__ import division\n",
+ "from math import sin,cos,pi,sqrt\n",
+ "\n",
+ "\n",
+ "\n",
+ "#variable declaration \n",
+ "\n",
+ "\n",
+ "E_theta = 10*(10**(-6)) #Electric field strength in V/m\n",
+ "theta = pi/2 #observation angle\n",
+ "r = 500*(10**3) #distance in metrs\n",
+ "f = 50*(10**6) #frequency in Hertz\n",
+ "c = 3*(10**8) #speed of light in m/sec\n",
+ "R_rad = 73 #for half wave dipole Radiation resistance in ohms\n",
+ "\n",
+ "\n",
+ "# calculation\n",
+ "lamda = c/f\n",
+ "L = lamda/2 #L is the length of half wave dipole\n",
+ "# formula : E=((60*I_m)/r)*((cos(pi/2*cos(theta)))*sin(theta))\n",
+ "I_m = (E_theta*r*sin(theta))/(60*cos(pi/2*cos(theta)))\n",
+ "I_rms = I_m/sqrt(2)\n",
+ "P_avg = (R_rad*(I_m**2))/2\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"Length of Dipole is\" ,round(L,2),\"metres\"\n",
+ "print \"Current fed to Antenna\",round(I_rms*1000,2),\"mA\"\n",
+ "print \"Average Power\",round(P_avg*1000,2),\"mW\"\n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.9.3,PAGE NO.-44"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "from __future__ import division\n",
+ "from math import pi,sqrt\n",
+ "\n",
+ "# variable declaration\n",
+ "\n",
+ "l_eff = 100 #effective hieght in m\n",
+ "f = 60*(10**3) #frequency in Hertz\n",
+ "r = 100*(10**3) #Distance in m\n",
+ "c = 3*(10**8) #Speed of light in m/sec\n",
+ "P_rad = 100*(10**3) #radiated power\n",
+ "\n",
+ "# calculation\n",
+ "\n",
+ "lamda = c/f\n",
+ "R_rad = 160*(pi**2)*((l_eff/lamda)**2)\n",
+ "I_rms = sqrt(P_rad/R_rad)\n",
+ "E_rms = (120*pi*l_eff*(I_rms**2))/(lamda*r)\n",
+ "\n",
+ "# Results\n",
+ "\n",
+ "print \"Strength of Electric field\",round(E_rms,2),\"V/m\"\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.9.4,PAGE NO.-45"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "from __future__ import division\n",
+ "from math import pi\n",
+ "\n",
+ "# variable declaration\n",
+ "\n",
+ "l_eff = 113.3 #Effective length in metres\n",
+ "lamda = 18.8 #Wavelength in metres\n",
+ "I_rms = 725 #Base current in Ampere\n",
+ "r = 175 #Distance in metre\n",
+ "Eta_o = 120*pi\n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "E = (120*pi*l_eff*I_rms)/(lamda*r)\n",
+ "H = E/Eta_o\n",
+ "R_rad = 160*(pi**2)*((l_eff/lamda)**2)\n",
+ "P_rad = (I_rms**2)*(R_rad)\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"The electric field at a distance r is \",round(E*0.001,2),\"mV/m\"\n",
+ "print \"The H field is\",round(H,2),\"uA/m\"\n",
+ "print \"The power radiated by Antenna is \",round(P_rad*(10**(-9)),2),\"kW\"\n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.9.5,PAGE NO.-46"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "from __future__ import division\n",
+ "from math import pi,sin\n",
+ "\n",
+ "# variable declaration\n",
+ "\n",
+ "lamda = 10*(10**(-2)) # In cm\n",
+ "r = 200*(10**(-2)) # In cm\n",
+ "theta = 90 # In Degrees\n",
+ "phi = 0 # In Degrees\n",
+ "IdL = 3*(10**(-4)) # current distribution in Am\n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "E_theta = (60*pi*IdL*sin(theta))/(lamda*r)\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"The magnitude of component E_theta is \",round(E_theta,2),\"V/m\"\n",
+ "\n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.9.6,PAGE NO.-46"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "from __future__ import division\n",
+ "from math import pi\n",
+ "\n",
+ "# variable declaration\n",
+ "\n",
+ "dL = lamda/12\n",
+ "\n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "R_rad = 80*(pi**2)*((dL/lamda)**2)\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"The Radiation resistance of dipole antenna is \",round(R_rad,2),\"ohm\"\n",
+ "\n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.9.7,PAGE NO.-46"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "from __future__ import division\n",
+ "from math import pi,sqrt\n",
+ "from sympy import Symbol\n",
+ "# variable declaration\n",
+ "\n",
+ "I_m = 100 # uniform current in ampere\n",
+ "Lm = Symbol('Lm') #Taking Lm as lamda\n",
+ "dL = Lm/16\n",
+ "\n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "P_rad = 80*(pi**2)*((dL/Lm)**2)*((I_m/sqrt(2))**2)\n",
+ "R_rad = 80*(pi**2)*((dL/Lm)**2)\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"The Radiation resistance of dipole is \",round(R_rad,2),\"ohm\"\n",
+ "\n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.9.8,PAGE NO.-47"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "# variable declaration\n",
+ "\n",
+ "f = 30*(10**6) #Frequency in Hz\n",
+ "c = 3*(10**8) #speed of light in m/s\n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "lamda = c/f\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"The Length of Half wave dipole is \",round((lamda/2),2),\"m\"\n",
+ "\n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.9.10,PAGE NO.-48"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "from __future__ import division\n",
+ "from math import pi,sin,sqrt \n",
+ "from sympy import Symbol\n",
+ "# variable declaration\n",
+ "\n",
+ "Lm = Symbol('Lm') # Taking lamda as Lm\n",
+ "dL = 0.01*Lm # Length of dipole \n",
+ "theta = 45\n",
+ "P_rad = 1 # Power radiated in kW\n",
+ "phi = 90\n",
+ "r = 1 # Distance in Km\n",
+ "Eta_o=120*pi\n",
+ "\n",
+ "\n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "R_rad = 20*(pi**2)*((dL/Lm)**2)\n",
+ "I_m = sqrt(2*P_rad*R_rad)\n",
+ "\n",
+ "# formula : P = (Eta_o/2)*(((Omega*I_m*dL*sin(theta))/(4*pi*r*v))**2)\n",
+ "P = (Eta_o/2)*(((I_m*dL*sin(theta))/(4*pi*(r**2)))**2)\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"The Power density is \",P,\"Watt/m^2\"\n",
+ "\n",
+ "# Note : The Solving in the book is wrong they put 0.1 instead of 0.1*lamda \n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.9.11,PAGE NO.-49"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "from __future__ import division\n",
+ "from math import pi \n",
+ "\n",
+ "# variable declaration\n",
+ "\n",
+ "dL = 75 #Length of dipole in m\n",
+ "f = 800 # Frequency in kHz\n",
+ "I_rms = 10 #rms Current in Amp\n",
+ "c = 3*(10**8) #Speed of light in m/s \n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "lamda = c/f\n",
+ "P_rad = 80*(pi**2)*((dL/lamda)**2)*(I_rms**2)\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"The Total Power radiated by Antenna is \",round(P_rad*1000,2),\"kW\"\n",
+ "\n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ }
+ ],
+ "metadata": {}
+ }
+ ]
+} \ No newline at end of file
diff --git a/sample_notebooks/NIKHILESH DAMLE/ANTENNAS_AND_WAVE_PROPAGATION_BY_U.A_BAKSHI,_A.V_BAKSHI,_K.A_BAKSHI_3.ipynb b/sample_notebooks/NIKHILESH DAMLE/ANTENNAS_AND_WAVE_PROPAGATION_BY_U.A_BAKSHI,_A.V_BAKSHI,_K.A_BAKSHI_3.ipynb
new file mode 100755
index 00000000..e025dd86
--- /dev/null
+++ b/sample_notebooks/NIKHILESH DAMLE/ANTENNAS_AND_WAVE_PROPAGATION_BY_U.A_BAKSHI,_A.V_BAKSHI,_K.A_BAKSHI_3.ipynb
@@ -0,0 +1,462 @@
+{
+ "metadata": {
+ "name": "",
+ "signature": "sha256:02197244985b7dfa2823dacf9fac72c0a7536b50c383ffa1801ccf3066222ec3"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+ {
+ "cells": [
+ {
+ "cell_type": "heading",
+ "level": 1,
+ "metadata": {},
+ "source": [
+ "Radiation"
+ ]
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.7.1, PAGE NO.-30"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "\n",
+ "# Variable declaration\n",
+ "\n",
+ "I_m = 15 #Current in Ampere\n",
+ "P_rad = 6 #Power radiated in kW\n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "# By formula\n",
+ "I_rms = I_m/math.sqrt(2) #I_rms is r.m.s. current\n",
+ "\n",
+ "R_rad = P_rad/(I_rms**2) #R_rad is radiation resistance\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"The radiation resistance of Antenna is\",round(R_rad*1000,2),\"kW\"\n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The radiation resistance of Antenna is 53.33 kW\n"
+ ]
+ }
+ ]
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.9.1,PAGE NO.-42"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "from __future__ import division\n",
+ "from math import sin,cos,pi,sqrt \n",
+ "from sympy import Symbol\n",
+ "\n",
+ "# Variable Declaration\n",
+ "\n",
+ "Lm = Symbol('Lm') # Taking lamda as Lm\n",
+ "dL = Lm/25 # Length of dipole for Hertian dipole\n",
+ "H_phi = 5 # Magnetic field strength in uA/m\n",
+ "theta = pi/2\n",
+ "r = 2 # Distance in Km\n",
+ "dL_1 = Lm/2 # Length of dipole for Half wave dipole \n",
+ "R_rad = 73 # Radiation resistance for half wave dipole in ohm\n",
+ "R_rad1 = 36.5 # Radiation resistance for quarter wave monopole in ohm\n",
+ "dL_2 = Lm/4 # Length of dipole for quarter wave monopole \n",
+ "\n",
+ "# Calculation\n",
+ "\n",
+ "# By formula : H_phi = I_m*dL*sin(theta)/2*Lm*r\n",
+ "I_m = (H_phi*2*Lm*r)/(dL*sin(theta))\n",
+ "I_rms = I_m/sqrt(2)\n",
+ "P_rad = 80*(pi**2)*((dL/Lm)**2)*(I_rms**2)\n",
+ "I_m1 = (H_phi*2*pi*r*sin(theta))/(cos(pi/2*cos(theta)))\n",
+ "I_rms1 = I_m1/sqrt(2)\n",
+ "P_rad1 = (I_rms1**2)*R_rad\n",
+ "P_rad2 = (I_rms1**2)*R_rad1\n",
+ "\n",
+ "# Result\n",
+ "\n",
+ "print \" The power radiated by hertzian dipole is \",round(P_rad*10**-3,2),\"mW\"\n",
+ "print \" The power radiated by half wave dipole is \",round(P_rad1*10**-3,2),\"mW\"\n",
+ "print \" The power radiated by Quarter wave monopole is \",round(P_rad2*10**-3,2),\"mW\"\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.9.2,PAGE NO.-43"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "from __future__ import division\n",
+ "from math import sin,cos,pi,sqrt\n",
+ "\n",
+ "\n",
+ "\n",
+ "#variable declaration \n",
+ "\n",
+ "\n",
+ "E_theta = 10*(10**(-6)) #Electric field strength in V/m\n",
+ "theta = pi/2 #observation angle\n",
+ "r = 500*(10**3) #distance in metrs\n",
+ "f = 50*(10**6) #frequency in Hertz\n",
+ "c = 3*(10**8) #speed of light in m/sec\n",
+ "R_rad = 73 #for half wave dipole Radiation resistance in ohms\n",
+ "\n",
+ "\n",
+ "# calculation\n",
+ "lamda = c/f\n",
+ "L = lamda/2 #L is the length of half wave dipole\n",
+ "# formula : E=((60*I_m)/r)*((cos(pi/2*cos(theta)))*sin(theta))\n",
+ "I_m = (E_theta*r*sin(theta))/(60*cos(pi/2*cos(theta)))\n",
+ "I_rms = I_m/sqrt(2)\n",
+ "P_avg = (R_rad*(I_m**2))/2\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"Length of Dipole is\" ,round(L,2),\"metres\"\n",
+ "print \"Current fed to Antenna\",round(I_rms*1000,2),\"mA\"\n",
+ "print \"Average Power\",round(P_avg*1000,2),\"mW\"\n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.9.3,PAGE NO.-44"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "from __future__ import division\n",
+ "from math import pi,sqrt\n",
+ "\n",
+ "# variable declaration\n",
+ "\n",
+ "l_eff = 100 #effective hieght in m\n",
+ "f = 60*(10**3) #frequency in Hertz\n",
+ "r = 100*(10**3) #Distance in m\n",
+ "c = 3*(10**8) #Speed of light in m/sec\n",
+ "P_rad = 100*(10**3) #radiated power\n",
+ "\n",
+ "# calculation\n",
+ "\n",
+ "lamda = c/f\n",
+ "R_rad = 160*(pi**2)*((l_eff/lamda)**2)\n",
+ "I_rms = sqrt(P_rad/R_rad)\n",
+ "E_rms = (120*pi*l_eff*(I_rms**2))/(lamda*r)\n",
+ "\n",
+ "# Results\n",
+ "\n",
+ "print \"Strength of Electric field\",round(E_rms,2),\"V/m\"\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.9.4,PAGE NO.-45"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "from __future__ import division\n",
+ "from math import pi\n",
+ "\n",
+ "# variable declaration\n",
+ "\n",
+ "l_eff = 113.3 #Effective length in metres\n",
+ "lamda = 18.8 #Wavelength in metres\n",
+ "I_rms = 725 #Base current in Ampere\n",
+ "r = 175 #Distance in metre\n",
+ "Eta_o = 120*pi\n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "E = (120*pi*l_eff*I_rms)/(lamda*r)\n",
+ "H = E/Eta_o\n",
+ "R_rad = 160*(pi**2)*((l_eff/lamda)**2)\n",
+ "P_rad = (I_rms**2)*(R_rad)\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"The electric field at a distance r is \",round(E*0.001,2),\"mV/m\"\n",
+ "print \"The H field is\",round(H,2),\"uA/m\"\n",
+ "print \"The power radiated by Antenna is \",round(P_rad*(10**(-9)),2),\"kW\"\n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.9.5,PAGE NO.-46"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "from __future__ import division\n",
+ "from math import pi,sin\n",
+ "\n",
+ "# variable declaration\n",
+ "\n",
+ "lamda = 10*(10**(-2)) # In cm\n",
+ "r = 200*(10**(-2)) # In cm\n",
+ "theta = 90 # In Degrees\n",
+ "phi = 0 # In Degrees\n",
+ "IdL = 3*(10**(-4)) # current distribution in Am\n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "E_theta = (60*pi*IdL*sin(theta))/(lamda*r)\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"The magnitude of component E_theta is \",round(E_theta,2),\"V/m\"\n",
+ "\n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.9.6,PAGE NO.-46"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "from __future__ import division\n",
+ "from math import pi\n",
+ "\n",
+ "# variable declaration\n",
+ "\n",
+ "dL = lamda/12\n",
+ "\n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "R_rad = 80*(pi**2)*((dL/lamda)**2)\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"The Radiation resistance of dipole antenna is \",round(R_rad,2),\"ohm\"\n",
+ "\n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.9.7,PAGE NO.-46"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "from __future__ import division\n",
+ "from math import pi,sqrt\n",
+ "from sympy import Symbol\n",
+ "# variable declaration\n",
+ "\n",
+ "I_m = 100 # uniform current in ampere\n",
+ "Lm = Symbol('Lm') #Taking Lm as lamda\n",
+ "dL = Lm/16\n",
+ "\n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "P_rad = 80*(pi**2)*((dL/Lm)**2)*((I_m/sqrt(2))**2)\n",
+ "R_rad = 80*(pi**2)*((dL/Lm)**2)\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"The Radiation resistance of dipole is \",round(R_rad,2),\"ohm\"\n",
+ "\n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.9.8,PAGE NO.-47"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "# variable declaration\n",
+ "\n",
+ "f = 30*(10**6) #Frequency in Hz\n",
+ "c = 3*(10**8) #speed of light in m/s\n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "lamda = c/f\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"The Length of Half wave dipole is \",round((lamda/2),2),\"m\"\n",
+ "\n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.9.10,PAGE NO.-48"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "from __future__ import division\n",
+ "from math import pi,sin,sqrt \n",
+ "from sympy import Symbol\n",
+ "# variable declaration\n",
+ "\n",
+ "Lm = Symbol('Lm') # Taking lamda as Lm\n",
+ "dL = 0.01*Lm # Length of dipole \n",
+ "theta = 45\n",
+ "P_rad = 1 # Power radiated in kW\n",
+ "phi = 90\n",
+ "r = 1 # Distance in Km\n",
+ "Eta_o=120*pi\n",
+ "\n",
+ "\n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "R_rad = 20*(pi**2)*((dL/Lm)**2)\n",
+ "I_m = sqrt(2*P_rad*R_rad)\n",
+ "\n",
+ "# formula : P = (Eta_o/2)*(((Omega*I_m*dL*sin(theta))/(4*pi*r*v))**2)\n",
+ "P = (Eta_o/2)*(((I_m*dL*sin(theta))/(4*pi*(r**2)))**2)\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"The Power density is \",P,\"Watt/m^2\"\n",
+ "\n",
+ "# Note : The Solving in the book is wrong they put 0.1 instead of 0.1*lamda \n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.9.11,PAGE NO.-49"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "from __future__ import division\n",
+ "from math import pi \n",
+ "\n",
+ "# variable declaration\n",
+ "\n",
+ "dL = 75 #Length of dipole in m\n",
+ "f = 800 # Frequency in kHz\n",
+ "I_rms = 10 #rms Current in Amp\n",
+ "c = 3*(10**8) #Speed of light in m/s \n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "lamda = c/f\n",
+ "P_rad = 80*(pi**2)*((dL/lamda)**2)*(I_rms**2)\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"The Total Power radiated by Antenna is \",round(P_rad*1000,2),\"kW\"\n",
+ "\n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ }
+ ],
+ "metadata": {}
+ }
+ ]
+} \ No newline at end of file
diff --git a/sample_notebooks/NIKHILESH DAMLE/ANTENNAS_AND_WAVE_PROPAGATION_BY_U.A_BAKSHI,_A.V_BAKSHI,_K.A_BAKSHI_4.ipynb b/sample_notebooks/NIKHILESH DAMLE/ANTENNAS_AND_WAVE_PROPAGATION_BY_U.A_BAKSHI,_A.V_BAKSHI,_K.A_BAKSHI_4.ipynb
new file mode 100755
index 00000000..e025dd86
--- /dev/null
+++ b/sample_notebooks/NIKHILESH DAMLE/ANTENNAS_AND_WAVE_PROPAGATION_BY_U.A_BAKSHI,_A.V_BAKSHI,_K.A_BAKSHI_4.ipynb
@@ -0,0 +1,462 @@
+{
+ "metadata": {
+ "name": "",
+ "signature": "sha256:02197244985b7dfa2823dacf9fac72c0a7536b50c383ffa1801ccf3066222ec3"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+ {
+ "cells": [
+ {
+ "cell_type": "heading",
+ "level": 1,
+ "metadata": {},
+ "source": [
+ "Radiation"
+ ]
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.7.1, PAGE NO.-30"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "import math\n",
+ "\n",
+ "# Variable declaration\n",
+ "\n",
+ "I_m = 15 #Current in Ampere\n",
+ "P_rad = 6 #Power radiated in kW\n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "# By formula\n",
+ "I_rms = I_m/math.sqrt(2) #I_rms is r.m.s. current\n",
+ "\n",
+ "R_rad = P_rad/(I_rms**2) #R_rad is radiation resistance\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"The radiation resistance of Antenna is\",round(R_rad*1000,2),\"kW\"\n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The radiation resistance of Antenna is 53.33 kW\n"
+ ]
+ }
+ ]
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.9.1,PAGE NO.-42"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "from __future__ import division\n",
+ "from math import sin,cos,pi,sqrt \n",
+ "from sympy import Symbol\n",
+ "\n",
+ "# Variable Declaration\n",
+ "\n",
+ "Lm = Symbol('Lm') # Taking lamda as Lm\n",
+ "dL = Lm/25 # Length of dipole for Hertian dipole\n",
+ "H_phi = 5 # Magnetic field strength in uA/m\n",
+ "theta = pi/2\n",
+ "r = 2 # Distance in Km\n",
+ "dL_1 = Lm/2 # Length of dipole for Half wave dipole \n",
+ "R_rad = 73 # Radiation resistance for half wave dipole in ohm\n",
+ "R_rad1 = 36.5 # Radiation resistance for quarter wave monopole in ohm\n",
+ "dL_2 = Lm/4 # Length of dipole for quarter wave monopole \n",
+ "\n",
+ "# Calculation\n",
+ "\n",
+ "# By formula : H_phi = I_m*dL*sin(theta)/2*Lm*r\n",
+ "I_m = (H_phi*2*Lm*r)/(dL*sin(theta))\n",
+ "I_rms = I_m/sqrt(2)\n",
+ "P_rad = 80*(pi**2)*((dL/Lm)**2)*(I_rms**2)\n",
+ "I_m1 = (H_phi*2*pi*r*sin(theta))/(cos(pi/2*cos(theta)))\n",
+ "I_rms1 = I_m1/sqrt(2)\n",
+ "P_rad1 = (I_rms1**2)*R_rad\n",
+ "P_rad2 = (I_rms1**2)*R_rad1\n",
+ "\n",
+ "# Result\n",
+ "\n",
+ "print \" The power radiated by hertzian dipole is \",round(P_rad*10**-3,2),\"mW\"\n",
+ "print \" The power radiated by half wave dipole is \",round(P_rad1*10**-3,2),\"mW\"\n",
+ "print \" The power radiated by Quarter wave monopole is \",round(P_rad2*10**-3,2),\"mW\"\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.9.2,PAGE NO.-43"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "from __future__ import division\n",
+ "from math import sin,cos,pi,sqrt\n",
+ "\n",
+ "\n",
+ "\n",
+ "#variable declaration \n",
+ "\n",
+ "\n",
+ "E_theta = 10*(10**(-6)) #Electric field strength in V/m\n",
+ "theta = pi/2 #observation angle\n",
+ "r = 500*(10**3) #distance in metrs\n",
+ "f = 50*(10**6) #frequency in Hertz\n",
+ "c = 3*(10**8) #speed of light in m/sec\n",
+ "R_rad = 73 #for half wave dipole Radiation resistance in ohms\n",
+ "\n",
+ "\n",
+ "# calculation\n",
+ "lamda = c/f\n",
+ "L = lamda/2 #L is the length of half wave dipole\n",
+ "# formula : E=((60*I_m)/r)*((cos(pi/2*cos(theta)))*sin(theta))\n",
+ "I_m = (E_theta*r*sin(theta))/(60*cos(pi/2*cos(theta)))\n",
+ "I_rms = I_m/sqrt(2)\n",
+ "P_avg = (R_rad*(I_m**2))/2\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"Length of Dipole is\" ,round(L,2),\"metres\"\n",
+ "print \"Current fed to Antenna\",round(I_rms*1000,2),\"mA\"\n",
+ "print \"Average Power\",round(P_avg*1000,2),\"mW\"\n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.9.3,PAGE NO.-44"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "from __future__ import division\n",
+ "from math import pi,sqrt\n",
+ "\n",
+ "# variable declaration\n",
+ "\n",
+ "l_eff = 100 #effective hieght in m\n",
+ "f = 60*(10**3) #frequency in Hertz\n",
+ "r = 100*(10**3) #Distance in m\n",
+ "c = 3*(10**8) #Speed of light in m/sec\n",
+ "P_rad = 100*(10**3) #radiated power\n",
+ "\n",
+ "# calculation\n",
+ "\n",
+ "lamda = c/f\n",
+ "R_rad = 160*(pi**2)*((l_eff/lamda)**2)\n",
+ "I_rms = sqrt(P_rad/R_rad)\n",
+ "E_rms = (120*pi*l_eff*(I_rms**2))/(lamda*r)\n",
+ "\n",
+ "# Results\n",
+ "\n",
+ "print \"Strength of Electric field\",round(E_rms,2),\"V/m\"\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.9.4,PAGE NO.-45"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "from __future__ import division\n",
+ "from math import pi\n",
+ "\n",
+ "# variable declaration\n",
+ "\n",
+ "l_eff = 113.3 #Effective length in metres\n",
+ "lamda = 18.8 #Wavelength in metres\n",
+ "I_rms = 725 #Base current in Ampere\n",
+ "r = 175 #Distance in metre\n",
+ "Eta_o = 120*pi\n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "E = (120*pi*l_eff*I_rms)/(lamda*r)\n",
+ "H = E/Eta_o\n",
+ "R_rad = 160*(pi**2)*((l_eff/lamda)**2)\n",
+ "P_rad = (I_rms**2)*(R_rad)\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"The electric field at a distance r is \",round(E*0.001,2),\"mV/m\"\n",
+ "print \"The H field is\",round(H,2),\"uA/m\"\n",
+ "print \"The power radiated by Antenna is \",round(P_rad*(10**(-9)),2),\"kW\"\n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.9.5,PAGE NO.-46"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "from __future__ import division\n",
+ "from math import pi,sin\n",
+ "\n",
+ "# variable declaration\n",
+ "\n",
+ "lamda = 10*(10**(-2)) # In cm\n",
+ "r = 200*(10**(-2)) # In cm\n",
+ "theta = 90 # In Degrees\n",
+ "phi = 0 # In Degrees\n",
+ "IdL = 3*(10**(-4)) # current distribution in Am\n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "E_theta = (60*pi*IdL*sin(theta))/(lamda*r)\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"The magnitude of component E_theta is \",round(E_theta,2),\"V/m\"\n",
+ "\n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.9.6,PAGE NO.-46"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "from __future__ import division\n",
+ "from math import pi\n",
+ "\n",
+ "# variable declaration\n",
+ "\n",
+ "dL = lamda/12\n",
+ "\n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "R_rad = 80*(pi**2)*((dL/lamda)**2)\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"The Radiation resistance of dipole antenna is \",round(R_rad,2),\"ohm\"\n",
+ "\n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.9.7,PAGE NO.-46"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "from __future__ import division\n",
+ "from math import pi,sqrt\n",
+ "from sympy import Symbol\n",
+ "# variable declaration\n",
+ "\n",
+ "I_m = 100 # uniform current in ampere\n",
+ "Lm = Symbol('Lm') #Taking Lm as lamda\n",
+ "dL = Lm/16\n",
+ "\n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "P_rad = 80*(pi**2)*((dL/Lm)**2)*((I_m/sqrt(2))**2)\n",
+ "R_rad = 80*(pi**2)*((dL/Lm)**2)\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"The Radiation resistance of dipole is \",round(R_rad,2),\"ohm\"\n",
+ "\n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.9.8,PAGE NO.-47"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "# variable declaration\n",
+ "\n",
+ "f = 30*(10**6) #Frequency in Hz\n",
+ "c = 3*(10**8) #speed of light in m/s\n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "lamda = c/f\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"The Length of Half wave dipole is \",round((lamda/2),2),\"m\"\n",
+ "\n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.9.10,PAGE NO.-48"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "from __future__ import division\n",
+ "from math import pi,sin,sqrt \n",
+ "from sympy import Symbol\n",
+ "# variable declaration\n",
+ "\n",
+ "Lm = Symbol('Lm') # Taking lamda as Lm\n",
+ "dL = 0.01*Lm # Length of dipole \n",
+ "theta = 45\n",
+ "P_rad = 1 # Power radiated in kW\n",
+ "phi = 90\n",
+ "r = 1 # Distance in Km\n",
+ "Eta_o=120*pi\n",
+ "\n",
+ "\n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "R_rad = 20*(pi**2)*((dL/Lm)**2)\n",
+ "I_m = sqrt(2*P_rad*R_rad)\n",
+ "\n",
+ "# formula : P = (Eta_o/2)*(((Omega*I_m*dL*sin(theta))/(4*pi*r*v))**2)\n",
+ "P = (Eta_o/2)*(((I_m*dL*sin(theta))/(4*pi*(r**2)))**2)\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"The Power density is \",P,\"Watt/m^2\"\n",
+ "\n",
+ "# Note : The Solving in the book is wrong they put 0.1 instead of 0.1*lamda \n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 1.9.11,PAGE NO.-49"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "from __future__ import division\n",
+ "from math import pi \n",
+ "\n",
+ "# variable declaration\n",
+ "\n",
+ "dL = 75 #Length of dipole in m\n",
+ "f = 800 # Frequency in kHz\n",
+ "I_rms = 10 #rms Current in Amp\n",
+ "c = 3*(10**8) #Speed of light in m/s \n",
+ "\n",
+ "#Calculation\n",
+ "\n",
+ "lamda = c/f\n",
+ "P_rad = 80*(pi**2)*((dL/lamda)**2)*(I_rms**2)\n",
+ "\n",
+ "#Result\n",
+ "\n",
+ "print \"The Total Power radiated by Antenna is \",round(P_rad*1000,2),\"kW\"\n",
+ "\n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": []
+ }
+ ],
+ "metadata": {}
+ }
+ ]
+} \ No newline at end of file
generated by cgit (git 2.34.1) at 2025-05-31 02:11:33 +0000