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+{
+ "metadata": {
+  "name": "",
+  "signature": "sha256:7e1c74a28912b449959296d5be17e181689de7baeff58aa5e2dcd8837dc4f405"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+  {
+   "cells": [
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "Chapter 2: Noise"
+     ]
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 2.1, page no. 18"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "# Variable Declaration\n",
+      "del_f = 2.00*pow(10,6)     # Bandwidth of interest (Hz)\n",
+      "T     = 300                # Operating Temperature (K)\n",
+      "k     = 1.38*pow(10,-23)   # Boltzmann's Constant (J/K)\n",
+      "\n",
+      "# Calculation\n",
+      "import math                # Math Library\n",
+      "Pn    = k*T*del_f          # Power Output (W)\n",
+      "\n",
+      "# Result\n",
+      "print \"Maximum noise power output of the resistor, Pn =\",round(Pn/pow(10,-13),4),\"* 10^(-13) Watts\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Maximum noise power output of the resistor, Pn = 0.0828 * 10^(-13) Watts\n"
+       ]
+      }
+     ],
+     "prompt_number": 1
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 2.2, page no. 19"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "# Variable Declaration\n",
+      "del_f = 2.00*pow(10,6)          # Bandwidth of interest (Hz)\n",
+      "T     = 300                     # Operating Temperature (K)\n",
+      "k     = 1.38*pow(10,-23)        # Boltzmann's Constant (J/K)\n",
+      "R     = 10.00*pow(10,3)         # Input Resistance (Ohms)\n",
+      "\n",
+      "# Calculation\n",
+      "import math                     # Math Library\n",
+      "Vn    = pow(4*k*T*del_f*R,0.5)  # RMS Noise Voltage (V)\n",
+      "\n",
+      "# Result\n",
+      "print \"The rms noise voltage at the input of the amplifier, Vn =\",round(Vn/pow(10,-6),1),\"microvolts\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The rms noise voltage at the input of the amplifier, Vn = 18.2 microvolts\n"
+       ]
+      }
+     ],
+     "prompt_number": 3
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 2.3, page no. 21"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "# Variable Declaration\n",
+      "del_f = 6.00*pow(10,6)               # Bandwidth of interest (Hz)\n",
+      "T     = 290                          # Operating Temperature (K)\n",
+      "k     = 1.38*pow(10,-23)             # Boltzmann's Constant (J/K)\n",
+      "R1    = 300                          # Input Resistance (Ohms)\n",
+      "R2    = 200                          # Device Resistance (Ohms)\n",
+      "\n",
+      "# Calculation\n",
+      "import math                          # Math Library\n",
+      "Vn    = pow(4*k*T*del_f*(R1+R2),0.5) # Noise voltage (V)\n",
+      "\n",
+      "# Result\n",
+      "print \"The noise voltage at the input of the Television RF amplifier, Vn =\",round(Vn/pow(10,-6),2),\"uV\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "The noise voltage at the input of the Television RF amplifier, Vn = 6.93 uV\n"
+       ]
+      }
+     ],
+     "prompt_number": 4
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 2.4, page no. 23"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "# Variable Declaration\n",
+      "A1  = 10                   # First Stage Voltage Gain\n",
+      "A2  = 25                   # Second Stage Voltage Gain\n",
+      "R11 = 600                  # First Stage Resistance (Ohms)\n",
+      "R12 = 1600                 # First Stage Resistance (Ohms)\n",
+      "R21 = 27000                # Second Stage Resistance (Ohms)\n",
+      "R22 = 81000                # Second Stage Resistance (Ohms)\n",
+      "R23 = 10000                 # Second Stage Resistance (Ohms)\n",
+      "R3  = 1.00*pow(10,6)        # Third Stage Resistance (Ohms)\n",
+      "\n",
+      "# Calculation\n",
+      "import math                                  # Math Library\n",
+      "R1  = R11+R12                                # Resistance 1 (Ohms)\n",
+      "R2  = R21*R22/(R21+R22)+R23                  # Resistance 2 (Ohms)\n",
+      "Req = R1+(R2/pow(A1,2))+R3/((A1*A1)*(A2*A2)) # Input Noise Resistance (Ohms)\n",
+      "\n",
+      "# Result\n",
+      "print \"Input Noise Resistance, Req =\",round(Req),\"Ohms\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Input Noise Resistance, Req = 2518.0 Ohms\n"
+       ]
+      }
+     ],
+     "prompt_number": 6
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 2.5, page no. 28"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "# Variable Declaration\n",
+      "Req = 2518.00             # Resistance From Example 2.4 (Ohms)\n",
+      "Rt  = 600.00              # Resistance From Example 2.4 (Ohms)\n",
+      "Ra  = 50.00               # Output Impedance (Ohms)\n",
+      "\n",
+      "# Calculation\n",
+      "import math               # Math Library\n",
+      "Req1 = Req-Rt             # Equivalent Resistance (Ohms)\n",
+      "NF   = 1+Req1/Ra          # Noise Figure\n",
+      "\n",
+      "# Result\n",
+      "print \"Noise Figure, F =\",round(NF,1),\"or\",round(10*math.log10(NF),2),\"dB\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Noise Figure, F = 39.4 or 15.95 dB\n"
+       ]
+      }
+     ],
+     "prompt_number": 7
+    },
+    {
+     "cell_type": "heading",
+     "level": 2,
+     "metadata": {},
+     "source": [
+      "Example 2.6, page no. 29"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "\n",
+      "# Variable Declaration\n",
+      "To  = 290                  # Operating Temperature (K)\n",
+      "Ra  = 50.00                # Antenna Resistance (Ohms)\n",
+      "Req = 30.00                # Equivalent Noise Resistance (Ohms)\n",
+      "\n",
+      "# Calculation\n",
+      "import math                # Math Library\n",
+      "NF  = 1+Req/Ra             # Noise Figure\n",
+      "F   = 10*math.log10(NF)    # Noise Figure (dB)\n",
+      "Teq = To*(NF-1)            # Noise Temperature (K)\n",
+      " \n",
+      "# Result\n",
+      "print \"Noise Figure, F =\",round(F,2),\"dB\"\n",
+      "print \"Noise Temperature, Teq =\",round(Teq),\"K\""
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "Noise Figure, F = 2.04 dB\n",
+        "Noise Temperature, Teq = 174.0 K\n"
+       ]
+      }
+     ],
+     "prompt_number": 8
+    }
+   ],
+   "metadata": {}
+  }
+ ]
+}
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