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Fixed impedance equation in transcalc

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The wave impedance equation was wrong. As given by Pozar's book (Page
113, Equation 3.86):
Z_{TE} = k * eta / beta
where k is the wave number, beta is the propagation constant and eta is
the intrinsic impedance of the waveguide. The problem was that eta was
calculated for e_r = 1 and mu_r = 1
This commit is contained in:
andresmmera 2015-09-07 09:39:39 +02:00 committed by in3otd
parent 33bba8c195
commit 0547f55205
1 changed files with 1 additions and 1 deletions
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qucs-transcalc/rectwaveguide.cpp
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@ -223,7 +223,7 @@ void rectwaveguide::analyze ()
beta = sqrt (pow (k, 2.0) - pow (kc (1,0), 2.0));
lambda_g = 2.0 * pi / beta;
/* Z0 = (k * ZF0) / beta; */
Z0 = k * ZF0 / beta;
Z0 = k * ZF0 * sqrt(mur/er) / beta;
/* calculate electrical angle */
lambda_g = 2.0 * pi / beta;