复习谐振腔的激励 (1)模式函数展开法（波导口激励) E=∑p,E。+∑9i E,=∑UnEn/亿m i=∑用。+∑G, A。-2G×E./21 G。=∑d×En/亿m1m Gdv 叮E.F,=0 Pa ∑U,1m ∑Unlm +(1)模式函数展开法（波导口激励） a a b b a b a a b b a b E p E q F H r H s G         ra   1 1 n an a n a V a a as a U I H H dv j Q Q                   Sb = n an n b V U I H G dv j   qb 0 b V E F dv     1 1 n an n a V a a as a U I E E dv j j Q Q                     Pa 复习 谐振腔的激励 t n tn on n E U E Z   ( ) ( ) a z tn on an n b z on on bn n H i E Z I G i E Z I      