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diff --git a/backup/temp_version_backup/chapter14.ipynb b/backup/temp_version_backup/chapter14.ipynb new file mode 100755 index 00000000..483c5c1b --- /dev/null +++ b/backup/temp_version_backup/chapter14.ipynb @@ -0,0 +1,229 @@ +{
+ "metadata": {
+ "name": "",
+ "signature": "sha256:e45779b9fe24c5d57bbc44b21eced0e689b3f83e9f5f5eea042afe4effb61cee"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+ {
+ "cells": [
+ {
+ "cell_type": "heading",
+ "level": 1,
+ "metadata": {},
+ "source": [
+ "Chapter 14 Antennas and Wave Propogation"
+ ]
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 14.1 page no 544"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#Given\n",
+ "f=310.0*10**6\n",
+ "\n",
+ "#Calculation\n",
+ "import math\n",
+ "len1 =(492*0.97)/f\n",
+ "len2 =(492/f)*0.8\n",
+ "len3 =(984/f)*0.73\n",
+ "z1 =120*log(35/2.0)\n",
+ "len4 =234/f\n",
+ "z2 = 73/2.0\n",
+ "\n",
+ "#Result\n",
+ "print\"(a) The length and radiation resistance of the dipole are \",round(len1*10**6,2),\"feet and 73 ohm respectively\"\n",
+ "print\"(b) The length of the folded dipole are \",round(len2*10**6,2),\"feet\"\n",
+ "print\"(c) The length and radiation resistance of the bow tie antenna are \",round(len3*10**6,1),\"feet and \",round(z1,1),\"ohm resp.\"\n",
+ "print\"(d) The length and radiation resistance of the groun plane antenna are \",round(len4*10**6,3),\"feet and\",z2,\"ohm resp.\"\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "(a) The length and radiation resistance of the dipole are 1.54 feet and 73 ohm respectively\n",
+ "(b) The length of the folded dipole are 1.27 feet\n",
+ "(c) The length and radiation resistance of the bow tie antenna are 2.3 feet and 343.5 ohm resp.\n",
+ "(d) The length and radiation resistance of the groun plane antenna are 0.755 feet and 36.5 ohm resp.\n"
+ ]
+ }
+ ],
+ "prompt_number": 1
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 14.2 Page no 553"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#Given\n",
+ "gain=14\n",
+ "len=250\n",
+ "attn_100=3.6\n",
+ "f =220*10\n",
+ "pin =50\n",
+ "p =0.126\n",
+ "\n",
+ "#Calculation\n",
+ "pout =pin*p\n",
+ "line_loss =pin-pout\n",
+ "pwr_ratio = 25.1\n",
+ "ERP = pwr_ratio*pout\n",
+ "\n",
+ "#Result\n",
+ "print\"(a) The transmission line loss is \",line_loss\n",
+ "print\"(b) Effective raduated power is \",round(ERP,1),\"W\"\n",
+ "\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "(a) The transmission line loss is 43.7\n",
+ "(b) Effective raduated power is 158.1 W\n"
+ ]
+ }
+ ],
+ "prompt_number": 12
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 14.3 Page no 556"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#Given\n",
+ "Z0 =50\n",
+ "Zl =172\n",
+ "f =460.0*10**6\n",
+ "VF =0.86\n",
+ "\n",
+ "#Calculation\n",
+ "len =(246/f)*VF\n",
+ "\n",
+ "#Result\n",
+ "print\"The length of the impedance matching section needed for the Q section is \",round(len*10**6,2),\"feet\"\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The length of the impedance matching section needed for the Q section is 0.46 feet\n"
+ ]
+ }
+ ],
+ "prompt_number": 13
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 14.4 Page no 557"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#Given\n",
+ "f = 460.0*10**6\n",
+ "VF = 0.66\n",
+ "\n",
+ "#Calculation\n",
+ "len = (246/f)*VF\n",
+ "\n",
+ "#Result \n",
+ "print\"The length of impedance matching section is \",round(len*10**6,3),\"feet\"\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The length of impedance matching section is 0.353 feet\n"
+ ]
+ }
+ ],
+ "prompt_number": 14
+ },
+ {
+ "cell_type": "heading",
+ "level": 2,
+ "metadata": {},
+ "source": [
+ "Example 14.5 Page no 567"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "#Given\n",
+ "ht =275\n",
+ "hr =60\n",
+ "f=224.0*10**6\n",
+ "pt=100\n",
+ "Gt = 26\n",
+ "Gr = 3.27\n",
+ "\n",
+ "#Calculation\n",
+ "D =((2*ht)**0.5+(2*hr)**0.5)*1.61\n",
+ "lamda = 300/f\n",
+ "Pr = (pt*Gt*Gr*lamda**2)/(16*3.14**2*D**2)\n",
+ "\n",
+ "#Result\n",
+ "print\"(a) The maximmum transmitting distance is \",round(D,1),\"kilometer\"\n",
+ "print\"(b) The received power is \",round(Pr*10**15,1),\"nW\"\n"
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "(a) The maximmum transmitting distance is 55.4 kilometer\n",
+ "(b) The received power is 31.5 nW\n"
+ ]
+ }
+ ],
+ "prompt_number": 2
+ }
+ ],
+ "metadata": {}
+ }
+ ]
+}
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