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// Chapter 3 example 12
//------------------------------------------------------------------------------
clc;
clear;
// Given data
a = 4*10^-2; // width of waveguide
b = 2*10^-2 // narrow dimension of waveguide
er = 4; // dielectric constant
c = 3*10^8 // velocity in m/s
// Calculations
lamda_c = 2*a; // max cut-off wavelength
fcmin = c/lamda_c // min freq
lamda_d = lamda_c/sqrt(er); // wavelength if we insert dielectric
fc = c/lamda_d // min frequency in presence of dielectric
// Output
mprintf('Minimum Frequency that can be passed with dielectric in waveguide is %3.1f Ghz',fc/10^9);
//-------------------------------------------------------------------------------
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