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{
"metadata": {
"name": "",
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"worksheets": [
{
"cells": [
{
"cell_type": "heading",
"level": 1,
"metadata": {},
"source": [
"Chapter11, Microstrip Antennas"
]
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example No. 11.9.1, page : 11-18"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"from math import sqrt\n",
"from __future__ import division\n",
"fr=10 #GHz(center frequency)\n",
"fr=fr*10**9 #Hz(center frequency)\n",
"epsilon_r=10.2 #(constant)\n",
"h=0.127 #cm(height of sustrate)\n",
"c=3*10**10 #cm/s(Speed of light)\n",
"W=c/2/fr*sqrt(2/(epsilon_r+1)) #cm(Physical dimension)\n",
"epsilon_reff=(epsilon_r+1)/2+(epsilon_r-1)/2*(1+12*h/W)**(-1/2) #(effective constant)\n",
"delta_L=h*0.412*(epsilon_reff+0.3)*(W/h+0.264)/((epsilon_reff-0.258)*(W/h+0.8)) #cm(distance)\n",
"L=c/2/fr/sqrt(epsilon_reff)-2*delta_L #cm(distance)\n",
"print \"Design values of W & L are : %0.3f & %0.4f cm \"%(W,L) "
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Design values of W & L are : 0.634 & 0.4255 cm \n"
]
}
],
"prompt_number": 5
}
],
"metadata": {}
}
]
}
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