Ch38-复习(III).ppt

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1、一、基本概念Basic ConceptBasic Concept 一、基本概念Basic ConceptBasic Concept Rs22 0yZx一、基本概念Basic ConceptBasic Concept 220Ek ElcEk Ed EdzE2222200kkccg222222222 1112gg一、基本概念Basic ConceptBasic Concept QWWWPTL201110QPWQQLiiiiQd1tgWWWH dvemv122|PJs R dSHR dSAsrs121222|QRH dVHdSH dVHdScsvrsvrs|22222二、矩型谐振腔TETE10110

2、1模 已知已知 TE01模行波场模行波场 z=0=0短路短路 z= =l短路短路 EEax eymj zsinEEaxeejEaxzymj zj zmsinsinsin2sin, ,llpplplgg0121212 2 TEg010模时EEaxlzy0sinsin二、矩型谐振腔TETE101101模 HjijkxyzEy100HjEzjElaxzlzy 1200sincosHjExjEaaxzlzy1200cossin二、矩型谐振腔TETE101101模 二、矩型谐振腔TETE101101模 1112112122222222010clalalalTE 模二、矩型谐振腔TETE101101模 储

3、能储能 W 损耗损耗PL WWeE dVEaxlz dxdydzablEvabl()| |sinsinmax1212182022200002PRHdxdyHdydzHHdxdzLsz xz xblabzyal122220202000022000|(| ) +2224020220220002022200|sinHdxdyElxadxdyEablz xabab2224020220220002022200|sinHdydzEazldydzEblaz xblbl二、矩型谐振腔TETE101101模 2222222000220220002202200| sincoscoscosHHdxdzElaxlz

4、dxdzEaaxlz dxdzzxalalal 020228EallaPERablblaallaLs0202222812QablEERablblaallaks00202022220088122 二、矩型谐振腔TETE101101模 QablRablblalaalalals003222122 0QalbR a lablblaallas0223 22 2412()/QRb alal alb als0223 22233222/三、圆柱谐振腔 圆柱腔圆柱腔 TEmn行波行波 xZy0HA Jk rmmexmnmcj z()cossin三、圆柱谐振腔 z=0 处处放短路板放短路板 z=l 处处放短路板放

5、短路板 谐振腔场谐振腔场 HA Jk rmmeejA Jk rmmzxmnmcj zj zmnmc()cossin()cossinsin2sin(),llppplg021 2 HHJk rmmplzxmnpmc()cossinsin三、圆柱谐振腔 横向场用纵向场来表示横向场用纵向场来表示 EEHHkzjzjjzjzErrEHrrHrrcxxxx100000000112EjkrHEjkHrHkHzrHkHzrczczrczcz 22222211三、圆柱谐振腔Ejk rHJk rmmplzEjkHJk rmmplzHpk lHJk rmmplzHmpk rlHJk rmrcmapmccmapmcr

6、cmapmccmapmc 222()sincossin ()cossinsin ()cossincos()sincossinmplz三、圆柱谐振腔kRcmnkRcmnCTRmnCTMmnRR22, 三、圆柱谐振腔 TE case TM case 022122mnRpl022122mnRpl TEmnp TMmnp QmpDpDlpDlmDlmnmnmnmn02223 2222221212221/QvpDlDlmn02221 2221/三、圆柱谐振腔 TM010 无法简单调谐无法简单调谐 0=2.62RQRRl0112 三、圆柱谐振腔 TE111 主模主模 主模TE11102211341212

7、.RllRQmpDpDlpDlmmnmnmn时211212220010011102223 22222., ()()/ TMTEmnDl21三、圆柱谐振腔 TE011 0221116412 .RlQDlDl023 2306101016810168 .,./三、圆柱谐振腔 圆柱腔中圆柱腔中Temnp和和TMmnp比较比较 TEmnp领矢矢量领矢矢量 Hz mnmn是是BesselBessel函数导数根函数导数根p=1, 2, Hz不允许沿不允许沿z不变不变 TMmnp领矢矢量领矢矢量 Ez mn是是Bessel函数导数根函数导数根p=1, 2, Ez不允许沿不允许沿z不变不变 kRcmnEHf Hllz()kRcmnEHg Hllz ()结束结束