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Diffstat (limited to 'backup/temp_version_backup/chapter9.ipynb')
| -rwxr-xr-x | backup/temp_version_backup/chapter9.ipynb | 274 |
1 files changed, 0 insertions, 274 deletions
diff --git a/backup/temp_version_backup/chapter9.ipynb b/backup/temp_version_backup/chapter9.ipynb deleted file mode 100755 index 379e8939..00000000 --- a/backup/temp_version_backup/chapter9.ipynb +++ /dev/null @@ -1,274 +0,0 @@ -{
- "metadata": {
- "name": "",
- "signature": "sha256:3ff4b00636e0eec0da6869f81549546163050c8b991ea646d8083caae0f8dd37"
- },
- "nbformat": 3,
- "nbformat_minor": 0,
- "worksheets": [
- {
- "cells": [
- {
- "cell_type": "heading",
- "level": 1,
- "metadata": {},
- "source": [
- "Chapter 9 Communication receivers"
- ]
- },
- {
- "cell_type": "heading",
- "level": 2,
- "metadata": {},
- "source": [
- "Example 9.1 Page no 318"
- ]
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "#given\n",
- "fl =220*10**6\n",
- "fm =224*10**6\n",
- "IF1 = 10.7*10**6\n",
- "IF = 1.5*10**6\n",
- "\n",
- "#Calculation\n",
- "IF2 =IF1+IF\n",
- "tune_l =fl+IF1\n",
- "tune_m = fm+IF1\n",
- "IF1_imgl = tune_l+IF1\n",
- "IF2_imgm = tune_m+IF1\n",
- "\n",
- "#Result\n",
- "print\"(a) The local oscillatior tuning range is \",tune_l/10**6,\"to \",tune_m/10**6,\"MHz\"\n",
- "print\"(b) Frequency of the second local oscillator is \",IF2/10**6,\"MHz\"\n",
- "print\"(c) First IF image range is \",IF1_imgl/10**6,\"MHz to \",IF2_imgm/10**6,\"MHz\"\n"
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "(a) The local oscillatior tuning range is 230.7 to 234.7 MHz\n",
- "(b) Frequency of the second local oscillator is 12.2 MHz\n",
- "(c) First IF image range is 241.4 MHz to 245.4 MHz\n"
- ]
- }
- ],
- "prompt_number": 1
- },
- {
- "cell_type": "heading",
- "level": 2,
- "metadata": {},
- "source": [
- "Example 9.2 Page no 324"
- ]
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "#Given\n",
- "R = 100*10**3\n",
- "T = 273+25\n",
- "B = 20*10**3\n",
- "k = 1.38*10**-23\n",
- "\n",
- "#Calculation\n",
- "Vn=(4*k*T*B*R)**0.5\n",
- "\n",
- "#Result\n",
- "print\"The noise voltage across 100k resistor is \",round(Vn*10**6,2),\"microvolt\"\n"
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "The noise voltage across 100k resistor is 5.74 microvolt\n"
- ]
- }
- ],
- "prompt_number": 1
- },
- {
- "cell_type": "heading",
- "level": 2,
- "metadata": {},
- "source": [
- "Example 9.3 Page no 324"
- ]
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "#Given\n",
- "R=75\n",
- "B=6*10**6 \n",
- "T = 29+273\n",
- "k =1.38*10**-23\n",
- "\n",
- "#calculation\n",
- "Vn = (4*k*T*B*R)**0.5\n",
- "\n",
- "#Result\n",
- "print\"The input themal noise is \",round(Vn*10**6,2),\"microvolt\"\n"
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "The input themal noise is 2.74 microvolt\n"
- ]
- }
- ],
- "prompt_number": 2
- },
- {
- "cell_type": "heading",
- "level": 2,
- "metadata": {},
- "source": [
- "Example 9.4 Page no 326"
- ]
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "#Given\n",
- "Tc=32.2\n",
- "Tk=273+Tc\n",
- "B =30*10**3\n",
- "k =1.38*10**-23\n",
- "\n",
- "#Calculation\n",
- "Pn=k*Tk*B\n",
- "\n",
- "#Result\n",
- "print\"The average noise power is \",round(Pn*10**16,2),\"10**-16 W\"\n"
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "The average noise power is 1.26 10**-16 W\n"
- ]
- }
- ],
- "prompt_number": 3
- },
- {
- "cell_type": "heading",
- "level": 2,
- "metadata": {},
- "source": [
- "Example 9.5 Page no 329"
- ]
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "#Given\n",
- "SN_ip = 8\n",
- "SN_op = 6.0\n",
- "\n",
- "#Calculation\n",
- "NR = SN_ip/SN_op\n",
- "NF = 10*log10(NR)\n",
- "\n",
- "#Result\n",
- "print\"The noise factor is \",round(NR,2)\n",
- "print\"The noise figure is \",round(NF,2),\"dB\"\n"
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "The noise factor is 1.33\n",
- "The noise figure is 1.25 dB\n"
- ]
- }
- ],
- "prompt_number": 6
- },
- {
- "cell_type": "heading",
- "level": 2,
- "metadata": {},
- "source": [
- "Example 9.6 Page no 330"
- ]
- },
- {
- "cell_type": "code",
- "collapsed": false,
- "input": [
- "#Given\n",
- "R= 75.0\n",
- "T=31+273\n",
- "k=1.38*10**-23\n",
- "B=6*10**6\n",
- "Vs = 8.3*10**-6\n",
- "NF=2.8\n",
- "\n",
- "#Calculation\n",
- "import math\n",
- "Vn = math.sqrt(4*k*T*B*R)\n",
- "Pn = Vn**2/R\n",
- "Ps = Vs**2/R\n",
- "SN = (Ps*10**12)/(Pn/10.0**12)\n",
- "SN_dB =10*log10(SN)\n",
- "NR = 10**0.28\n",
- "SN_op = SN/NR\n",
- "Tn = 290*(NR-1)\n",
- "\n",
- "#Result\n",
- "print\"(a) The input noise power is \",round(Pn*10**12,1),\"pW\"\n",
- "print\"(b) The input signal power is \",round(Ps*10**12,3),\"pW\"\n",
- "print\"(c) Signal to noise ratio in decibels \",round(SN/10**24,2)\n",
- "print\"(d) The noise factor is \",round(NR,2)\n",
- "print\"(e) Signal to noise ratio of the amplifier is \",round(SN_op/10**24,2)\n",
- "print\"(f) The noise temperature of the amplifier \",round(Tn,0),\"K\"\n"
- ],
- "language": "python",
- "metadata": {},
- "outputs": [
- {
- "output_type": "stream",
- "stream": "stdout",
- "text": [
- "(a) The input noise power is 0.1 pW\n",
- "(b) The input signal power is 0.919 pW\n",
- "(c) Signal to noise ratio in decibels 9.12\n",
- "(d) The noise factor is 1.91\n",
- "(e) Signal to noise ratio of the amplifier is 4.79\n",
- "(f) The noise temperature of the amplifier 263.0 K\n"
- ]
- }
- ],
- "prompt_number": 23
- }
- ],
- "metadata": {}
- }
- ]
-}
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