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actual diplexer lower frequency than expected in ADS

Question asked by yinyinhe on Apr 8, 2015
Hi all,

Designed a 2 stage diplexer (bandpass/bandstop) in ADS with 97% yield. Got the board back and the frequency is shifted down by ~50MHz (measured on agilent field fox). I chose the highest Q components for inductors and capacitors from Coil Craft and Murata, which are included in the good simulation result. 

Thanks for your advice