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"worksheets": [
{
"cells": [
{
"cell_type": "heading",
"level": 1,
"metadata": {},
"source": [
"CHAPTER03:AMPLITUDE"
]
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example E07 : Pg 3.14"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"# Page Number: 3.14\n",
"# Example 3.7\n",
"# Given\n",
"# (a)efficiency=((u**2)/(2+(u**2)))\n",
"u=0.5;\n",
"n=((u**2.)/(2.+(u**2.)));\n",
"np=n*100.;\n",
"print\"Efficiney: \",round(np,2),\"%\"\n",
"\n",
"# (b)nmax,\n",
"# nmax occurs at u=1;\n",
"u1=1.;\n",
"nmax=((u1**2.)/(2.+(u1**2.)));\n",
"nmaxp=nmax*100.;\n",
"print\"Efficiney max: \",nmaxp,\"%\""
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Efficiney: 11.11 %\n",
"Efficiney max: 33.3333333333 %\n"
]
}
],
"prompt_number": 1
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example E08 : Pg 3.14"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"# Page Number: 3.14\n",
"# Example 3.8\n",
"# Given\n",
"# From waveform\n",
"Amax=150.;\n",
"Amin=30.;\n",
"\n",
"# (a)Modulation index\n",
"u=((Amax-Amin)/(Amax+Amin));\n",
"print\"Modulation Index: \",round(u,2)\n",
"\n",
"Ac=(Amax/(1.+u));\n",
"# (b)\n",
"# Carrier Power\n",
"Pc=(Ac**2.)/2.;\n",
"print\"Carrier Power: \",round(Pc,2),\"W\"\n",
"\n",
"# Side band Power\n",
"PSB=(Amin**2.)/2.;\n",
"print\"USB=LSB Power: \",round(PSB,2),\"W\"\n",
"\n",
"# Total Average power\n",
"Pt=Pc+(2.*PSB);\n",
"print\"Total Average Power: \",round(Pt,2),\"W\"\n",
"\n",
"# (c)Peak Envelope Power\n",
"# Given\n",
"R=60; # Ohm\n",
"PEP=(Amax**2)/(2*R);\n",
"print\"Peak Envelope Power: \",round(PEP),\"W\"\n",
"\n",
"# (d) Modulation Efficieny\n",
"n=PSB/Pt;\n",
"print\"Modulation efficieny: \",round(n,2)\n",
"\n",
"# (e) Given\n",
"# (i) u=0.2\n",
"u1=0.2;\n",
"A1=(60./u1)-Ac;\n",
"print\"A=\",round(A1)\n",
"\n",
"# (ii) u=0.8\n",
"u2=0.8;\n",
"A2=(60./u2)-Ac;\n",
"print \"A=\",round(A2)"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Modulation Index: 0.67\n",
"Carrier Power: 4050.0 W\n",
"USB=LSB Power: 450.0 W\n",
"Total Average Power: 4950.0 W\n",
"Peak Envelope Power: 188.0 W\n",
"Modulation efficieny: 0.09\n",
"A= 210.0\n",
"A= -15.0\n"
]
}
],
"prompt_number": 2
}
],
"metadata": {}
}
]
}
|
