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Propagation constants:ferrite phaseshifter

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segeto

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Dear all,
Can someone help me with my simulation using CST. I have been trying to simulate a ferrite partially filled rectangular phaseshifter (example 9.4: Microwave engineering by Pozar 3rd edition; pg 473). I could not get the expected results of different propagation constants (forward and reverse) when the directions of the biased fields of the two ferrite posts are reversed. All I have been getting is the same propagation constants which makes the phaseshift to be zeros when the the thickness of the ferrite posts are parameterized. I will appreciate if someone could help. I attached the .cst file with this thread.
Segeto.
 

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