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Modeling varactor intermods in a combline filter

Question asked by Chazman on Feb 14, 2017
Latest reply on Aug 4, 2017 by bafisher

What is the best analysis tool for this? I'm using varactors for the caps in a combline filter. I want to determine the level of two tone intermods due to the varactor nonlinearity. My experience in the past says Spice allows for two tones and can do frequency plots but doesn't work well with transmission lines. Is Harmonic Balance the best tool for this? Can Spice work with transmission lines?

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