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{
"metadata": {
"name": ""
},
"nbformat": 3,
"nbformat_minor": 0,
"worksheets": [
{
"cells": [
{
"cell_type": "heading",
"level": 1,
"metadata": {},
"source": [
"Chapter 8:Microwave Diodes, Quantum-Effect, and Hot-Electron Devices"
]
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 8.1 Page 257"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#initialisation of variable\n",
"from math import *\n",
"L=10*10**-9;#inductance\n",
"C=4*10**-12;#capacitance\n",
"\n",
"#calculation\n",
"Z=(L/C)**.5;#impedence\n",
"\n",
"#result\n",
"print\"characteristics impedence is\",round(Z,2),\"ohm\""
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"characteristics impedence is 50.0 ohm\n"
]
}
],
"prompt_number": 3
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 8.2 Page 258"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#initialisation of variable\n",
"from math import *\n",
"a=.05;#m\n",
"b=.025;#cm\n",
"d=.1;#m\n",
"c=3*10**8;#speed\n",
"\n",
"#calculation\n",
"f=c/2*((1/a)**2+(1/d)**2)**.5;#frequency\n",
"\n",
"#result\n",
"print\"resonant frequncy is\",round(f/10**9,3),\"GHz\""
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"resonant frequncy is 3.354 GHz\n"
]
}
],
"prompt_number": 1
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 8.3 Page 263"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#initialisation of variable\n",
"from math import *\n",
"b=10**-4;\n",
"W=6*10**-4;#width\n",
"F=3.3*10**5;#field\n",
"Q=2*10**12;#charge density\n",
"q=1.6*10**-19;#charge\n",
"D=11.9;\n",
"E=8.85*10**-14;#constant\n",
"\n",
"#calculation\n",
"a=W-b;\n",
"Vb=(F*10**-4+(F-q*Q/D/E)*a);#brekdown voltage\n",
"Fd=13/a;#field\n",
"f=10**7/2/a;#frequency\n",
"\n",
"#result\n",
"print\"breakdown voltage is\",round(Vb,2),\"V\"\n",
"print\"field in drift region is\",round(Fd,2),\"V/cm\"\n",
"print\"frequency is\",round(f/10**9,2),\"GHz\"\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"breakdown voltage is 46.07 V\n",
"field in drift region is 26000.0 V/cm\n",
"frequency is 10.0 GHz\n"
]
}
],
"prompt_number": 1
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example8.4 Page269"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#initialisation of variable\n",
"from math import *\n",
"l=10;#length\n",
"L=10**-3;\n",
"v=10**7;#velocity\n",
"\n",
"#calculation\n",
"t=L/v;#time\n",
"\n",
"#result\n",
"print\"time required is\",round(t*10**9,2),\"ns\""
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"time required is 0.1 ns\n"
]
}
],
"prompt_number": 4
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 8.5 Page 273"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#initialisation of variable\n",
"from math import *\n",
"Lw=4.5;#nm\n",
"Vp1=700;#mV\n",
"Vp2=280;#mV\n",
"\n",
"#calculation\n",
"V=Vp1-Vp2;\n",
"\n",
"#result\n",
"print\"ground water level is 140mV and peak width is 1meV for\",round(Lw,1),\"nm\"\n",
"print\"difference of voltage drop due to accumulation and depletion region is\",round(V,2),\"mV\""
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"ground water level is 140mV and peak width is 1meV for 4.5 nm\n",
"difference of voltage drop due to accumulation and depletion region is 420.0 mV\n"
]
}
],
"prompt_number": 2
}
],
"metadata": {}
}
]
}
|
