purplewolf
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Hello, I was going through a paper of circulator and i found something which catched my attention. For simplicity, I beifly explain. They have designed a circulator and by modulation a varacter with a certain frequency then allow or block the signal passing through different ports in the circulator. The point which i dont get is how they do such a simulation with s-parameter. As far i know, s parameters can never ever incorporate different frequencies like in mixer.. (only harmonic balance or large singal analysis can do it)..Am i missing something.. So they turn on and off the modulation and see the effect on s parameters. In simulation hwo is it possible.. ??i just the paragraphd from their paper briefly.
'''Fig. 7 presents the -paramaters with and without mod- ulation as obtained through full-wave simulations and the coupled-mode (17). Simulations were performed by con- sidering full SPICE models for the varactors and the filter inductors, while inductors were modeled through a se- ries combination of inductances and resistances'.
what does it mean?? can someone eleborate the type of s parameters they are referring??
waiting for urgent reply!
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