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Diffstat (limited to 'Modern_Electronics_Communication/Chapter3.ipynb')
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diff --git a/Modern_Electronics_Communication/Chapter3.ipynb b/Modern_Electronics_Communication/Chapter3.ipynb new file mode 100755 index 00000000..23d71dd2 --- /dev/null +++ b/Modern_Electronics_Communication/Chapter3.ipynb @@ -0,0 +1,166 @@ +{
+ "metadata": {
+ "name": ""
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+ {
+ "cells": [
+ {
+ "cell_type": "heading",
+ "level": 1,
+ "metadata": {},
+ "source": [
+ "Chapter 3 Amplitude modulation-Reception "
+ ]
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 3.1 Page no 120"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "# given\n",
+ "fr=550*10**3 #frequency, Hz\n",
+ "L=10.0*10**-6 #inductor, H\n",
+ "fr1=1550*10**3\n",
+ "\n",
+ "#calculation \n",
+ "import math\n",
+ "a=fr*2*math.pi\n",
+ "x=fr1*2*math.pi\n",
+ "b=1/a\n",
+ "y=1/x\n",
+ "C1=((b)**2/L)\n",
+ "C2=((y)**2/L)\n",
+ "fr2=1100*10**3\n",
+ "BW=10.0*10**3\n",
+ "Q=(fr2/BW)\n",
+ "BW1=(fr1/Q)\n",
+ "BW2=(fr/Q)\n",
+ "\n",
+ "#result\n",
+ "print\"(a) required range of capacitance is from \",round(C2,12),\"F\",\"to\",round(C1,12),\"F\"\n",
+ "print\"(b) Q= \",Q\n",
+ "print\"(c) Bandwidth of receiver at 1550 KHz = \",round(BW1,2),\"Hz\"\n",
+ "print\"Babdwidth of receiver at 550 KHz = \",BW2,\"Hz\""
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "(a) required range of capacitance is from 1.054e-09 F to 8.374e-09 F\n",
+ "(b) Q= 110.0\n",
+ "(c) Bandwidth of receiver at 1550 KHz = 14090.91 Hz\n",
+ "Babdwidth of receiver at 550 KHz = 5000.0 Hz\n"
+ ]
+ }
+ ],
+ "prompt_number": 11
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 3.2 Page no 134"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "# given\n",
+ "f=620*10**3 #frequency, Hz\n",
+ "IF=455*10**3\n",
+ "\n",
+ "#calculation\n",
+ "LO=f+IF\n",
+ "X=IF+LO\n",
+ "# image frequency of local oscillator\n",
+ "#station frequency = 620 kHz\n",
+ "\n",
+ "#Result\n",
+ "print\"LO = Hz\",LO\n",
+ "print\"X-1075kHz=\",X,\"Hz\"\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "LO = Hz 1075000\n",
+ "X-1075kHz= 1530000 Hz\n"
+ ]
+ }
+ ],
+ "prompt_number": 3
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 3.3 Page no 150"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#Given\n",
+ "V=8*10**-6 #microvolts\n",
+ "R=50 #input resistance, ohm\n",
+ "\n",
+ "#Calculation\n",
+ "import math\n",
+ "P=(V**2)/R\n",
+ "dBm=10*math.log10(P/0.001)\n",
+ "dBW=10*math.log10(P/1)\n",
+ "a=(-89+8+3+24+26+26-2+34)\n",
+ "x=(a/10)\n",
+ "y=10**x\n",
+ "z=y*0.001\n",
+ "\n",
+ "#Result\n",
+ "print\"input power is= \",P,\"W\" \n",
+ "print\"dBm = \",round(dBm,0),\"dBm\"\n",
+ "print\"dBW = \",round(dBW,0),\"dBw\"\n",
+ "print\"Pout(dBm) =\",a,\" dBm into speaker\"\n",
+ "print\"Pout(dBW) =\",z,\"W\"\n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "input power is= 1.28e-12 W\n",
+ "dBm = -89.0 dBm\n",
+ "dBW = -119.0 dBw\n",
+ "Pout(dBm) = 30 dBm into speaker\n",
+ "Pout(dBW) = 1.0 W\n"
+ ]
+ }
+ ],
+ "prompt_number": 14
+ }
+ ],
+ "metadata": {}
+ }
+ ]
+}
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