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{
"metadata": {
"name": "",
"signature": "sha256:526f0478ca7a5ec4522d70a6832114c547e4784f425e0391463d5037753dde9d"
},
"nbformat": 3,
"nbformat_minor": 0,
"worksheets": [
{
"cells": [
{
"cell_type": "heading",
"level": 1,
"metadata": {},
"source": [
"Chapter 16 Microwave communication"
]
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 16.1 Page no 616"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Given\n",
"Zsrc =50\n",
"Zld =136\n",
"f =5800.0*10**6\n",
"Er =2.4\n",
"\n",
"#Calculation\n",
"Zq =(Zsrc * Zld)**0.5\n",
"Vp =1/(Er)**0.5\n",
"lamda = 300/f\n",
"len = (lamda/4.0)*38.37*Vp\n",
"\n",
"#Result\n",
"print\"(a) The required impedance is \",round(Zq,2),\"ohm\"\n",
"print\"(b) The length of the microstrip \",round(len*10**6,2),\"inches\"\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"(a) The required impedance is 82.46 ohm\n",
"(b) The length of the microstrip 0.32 inches\n"
]
}
],
"prompt_number": 3
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 16.2 Page no 623"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Given\n",
"w=0.65\n",
"h=0.38\n",
"\n",
"#Calculation\n",
"fco = 300/(2.0*((0.65*2.54)/100.0))\n",
"f =1.42*fco\n",
"\n",
"#Result\n",
"print\"(a) The cutoff frequency of the \",round(fco/10**3,3),\"GHz\"\n",
"print\"(b) Operating frequency of the wavwguide is \",round(f/10**3,1),\"GHz\"\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"(a) The cutoff frequency of the 9.085 GHz\n",
"(b) Operating frequency of the wavwguide is 12.9 GHz\n"
]
}
],
"prompt_number": 7
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 16.3 Page no 623"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#for the above question\n",
"print\"The c band is approximately 4 to 6 Ghz since a waveguide acts as a high pass filter with cut off of 9.08 Ghz it will not pass c band signal\"\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"The c band is approximately 4 to 6 Ghz since a waveguide acts as a high pass filter with cut off of 9.08 Ghz it will not pass c band signal\n"
]
}
],
"prompt_number": 8
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 16.4 Page no 648"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Given\n",
"lamda1 =5.0\n",
"f2 = 15.0*10**9\n",
"D=1.524\n",
"\n",
"#Calculation\n",
"f1=984/lamda1\n",
"lamda2 =300/f2\n",
"G = (6*(D/lamda2)**2)\n",
"B = 70/(D/lamda2)\n",
"\n",
"#Result\n",
"print\"(a) The lowest possible oprerating frequency is \",f1,\"MHz\"\n",
"print\"(b) The gain at 15 Ghz is \",G/10**12\n",
"print\"(c) The beam width at 15Ghz is \",round(B*10**6,2),\"degree\"\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"(a) The lowest possible oprerating frequency is 196.8 MHz\n",
"(b) The gain at 15 Ghz is 34838.64\n",
"(c) The beam width at 15Ghz is 0.92 degree\n"
]
}
],
"prompt_number": 9
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 16.5 Page no 661"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Given\n",
"T = 9.2\n",
"theta = 20\n",
"sin20 = 0.342\n",
"a=5280\n",
"\n",
"#Calculation\n",
"D_nautical = T/12.36\n",
"D_statute =D_nautical*0.87\n",
"A = D_statute*0.342\n",
"A1=A*a\n",
"\n",
"#Result\n",
"print\"(a) The line of distance to the aircraft in the statute miles \",round(D_statute,3)\n",
"print\"(b) The altitude of the aircraft is \",round(A,2),\"mi\"\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"(a) The line of distance to the aircraft in the statute miles 0.648\n",
"(b) The altitude of the aircraft is 0.22 mi\n"
]
}
],
"prompt_number": 5
}
],
"metadata": {}
}
]
}
|
