jiyuanji
Newbie level 2
According to the help file in HFSS, the accepted power is equal to |a|^2*(1-|s11|^2) for a one port condition. By my understanding, it should be equal to |a|^2*(1-|s11|^2-|s21|^2) for two port condition. However, by comparing the two results, they are very close but not the same. Is my understanding wrong? Further more, for a two port asymmetric structure, |S21|=|S12|, but |S11|≠|S22|. Hence, if I change the incident power from port 1 to port 2, the accepted power calculated by |a|^2*(1-|s11|^2-|s21|^2) should be different. However, by doing the simulation, the accepted power for the incident power at two different end of the same structure is totally the same! I am quite confused now...