{
 "metadata": {
  "name": "chapter7.ipynb"
 },
 "nbformat": 3,
 "nbformat_minor": 0,
 "worksheets": [
  {
   "cells": [
    {
     "cell_type": "heading",
     "level": 1,
     "metadata": {},
     "source": [
      "Chapter 7: Antenna Synthesis and Continuous Sources"
     ]
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": [
      "Example 7.1, Page no. 392"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "#In this example the values of a1,a2,a3,a4 are found\n",
      "#the values of z1 z2 z3 are substituted in the equation AF=(z-z1)(z-z2)(z-z3)\n",
      "a1=-1\n",
      "a2=1\n",
      "a3=-1\n",
      "a4=1\n",
      "print \"The values of a1, a2, a3 and a4 are %d, %d, %d and %d respectively\"%(a1,a2,a3,a4)"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "The values of a1, a2, a3 and a4 are -1, 1, -1 and 1 respectively\n"
       ]
      }
     ],
     "prompt_number": 1
    },
    {
     "cell_type": "heading",
     "level": 2,
     "metadata": {},
     "source": [
      "Example 7.3, Page no. 398"
     ]
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "import numpy as np\n",
      "import scipy.integrate as integrate\n",
      "a=np.zeros(11)\n",
      "for m in range(0,11):\n",
      "    a[m]=integrate.quad(lambda x: exp(-1j*m*x) , (-pi/sqrt(2)) , (pi/sqrt(2)))[0]\n",
      "maxval = a[0]\n",
      "for i in range(0,11):\n",
      "    if maxval<a[i]:\n",
      "        maxval = a[i]\n",
      "\n",
      "print 'Normalized Co-efficients:';\n",
      "for i in range(0,11):\n",
      "    a[i]=a[i]/maxval\n",
      "    print 'a',i,':',a[i]"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "Normalized Co-efficients:\n",
        "a 0 : 1.0\n",
        "a 1 : 0.358187786013\n",
        "a 2 : -0.216954294377\n",
        "a 3 : 0.0558163210177\n",
        "a 4 : 0.0577652398568\n",
        "a 5 : -0.0894712295755\n",
        "a 6 : 0.0518110265309\n",
        "a 7 : 0.0101104236117\n",
        "a 8 : -0.0495750638142\n",
        "a 9 : 0.0455187541912\n",
        "a 10 : -0.00996721500244\n"
       ]
      }
     ],
     "prompt_number": 26
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [],
     "language": "python",
     "metadata": {},
     "outputs": []
    }
   ],
   "metadata": {}
  }
 ]
}