From b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b Mon Sep 17 00:00:00 2001
From: priyanka
Date: Wed, 24 Jun 2015 15:03:17 +0530
Subject: initial commit / add all books

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 2219/CH3/EX3.15/Ex3_15.sce | 23 +++++++++++++++++++++++
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 create mode 100755 2219/CH3/EX3.15/Ex3_15.sce

(limited to '2219/CH3/EX3.15')

diff --git a/2219/CH3/EX3.15/Ex3_15.sce b/2219/CH3/EX3.15/Ex3_15.sce
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+// Chapter 3 example 15
+//------------------------------------------------------------------------------
+clc;
+clear;
+// Given data
+a   = 4*10^-2;      // width of waveguide
+b   = 2*10^-2;      // narrow dimension of waveguide
+c   = 3*10^8;       // velocity of EM wave in m/s
+m1  = 1;            // for TE10
+m2  = 2;            // for TE20
+n   = 0;            // for TE10
+// Calculations
+lamda_c     = 2*a       // cutoff wavelength for TE10 mode
+f1          = c/lamda_c // frequency in Hz
+// the frequency range for single mode operation is the range of frequencies corresponding to the dominant mode and the second highest cutoff wavelength
+lamda_c_2   = 2/sqrt((m2/a)^2 + (n/b)^2)
+f2          = c/lamda_c_2;   // freq at second largest cutoff wavelength
+
+// Output
+mprintf('Therefore,single mode operating range = %3.2f Ghz to %3.1f Ghz\n',f1/10^9,f2/10^9 );
+mprintf(' Note: instead of 3.75,3.5 is printed in textbook');
+//------------------------------------------------------------------------------
+
-- 
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