CAPTR 3 WAVGUIDS & CAVIT RSONATORS AND DILCTRIC WAVGUIDS OPTICAL FIBRS 導 波 管 & 共 振 腔 與 介 質 導 波 管 光 纖 W t rqu is t irowv rg >4 G? t losss o wv i two-odutor trsissio li du to iprt odutor d loss diltri o lrg it is t or iit to us ollow o-odutor wvguid. Also or t ig-powr trsissio t solid wvguid strutur is prrrd. Trsissio lis r two-odutor lis wi sill support TM wv. Wvguids r sigl-odutor lis d ot support TM wv proo?. => T trsvrs ltri or TM trsvrs gti wvs disusd ltr or t 號 角 天 線 d wvguids i rltor t sst o SNG vil. * 897 : Lord Rlig ttill provd tt M wv propgtio i t wvguid ws possil. * 936 : G. Soutwort o Bll Tlpo Lortoris d W. Brrow o M.I.T. pritll dostrtd t M wv propgtio i wvguids.
3- Wvguids r ot ul & psiv. Rtl wit silio-sd iroig tolog MMS ollow tlli wvguids v ritd or oprtio t optil rquis => oprd wit optil ir? * J. N. MMulli ollow tlli wvguids i silio-v groovs I Potois Tolog Lttrs 59 pp. 8-8 Sp. 993. Klstro 調 速 管 微 波 源 Mgtro 磁 控 管 微 波 源 TWT 行 波 管 微 波 放 大 器 trvlig wv tu O-odutor wvguid d Two-odutor trsissio li trl pro 4.-R. Cug NCKU
3-3 4.-R. Cug NCKU
3-4 4.-R. Cug NCKU
3-5 3- Wvguid Mods t t O Cosidr uior wvguid ostt uior ross stio log dirtio t wv propgtig log t uior wvguidig strutur ssud s : t t t t Not :. Propgtio ostt is uow t tis ot. & r ol utios o ut t v opots! => Si ilds i rg-r rgio stis oogous vtor lolt's qutios : ; & 3-D Lpli oprtor prssd s t : ross stio oordits t : logitudil oordits => I Crtsi oordits : t 4.-R. Cug NCKU
4.-R. Cug NCKU 3-6 si PD d ordr lt Fro Fro It prov tt ilds prssd T trsvrs ltri od TM trsvrs gti od => * ** Not:. i d dtrid ll otr opots otid.. t solutios dpd o wvguid ross-stio gotr & oudr oditios t t itr o wvguid odutor & isid diltri.
4.-R. Cug NCKU 3-7 3-3 Mtl Wvguids 3-3- TM ods i Rtgulr Wvguids logitudil opots: ** => & Fro oudr oditios o t wvguid = = = = - ild = : tgtil => dtri & igvlu => t ˆ
4.-R. Cug NCKU 3-8. B usig sprtio o vrils utio o utio o * d d d d d d d d d d d d. or * to stis oudr oditios = = = = si si 3... si si Lt & di TM wvguid od si os os si os si si os Not: od o rqu :uto wr TM :? G i wr
3-9 Psil ig o uto rqu or 截 止 頻 率 i : = iput wv rqu & TM wv t ~ pur igir t u TM / ps vloit u p utm / * i r - sp diu utm C spd o ligt u p C! w? d group vloit ug... utm utm d => u u u p g TM * s 3-3-4 P 58 dirtil propgtio dl or puls sprdig: i TM wv wvlgt i t TM wv ipd: Z guid : Z TM -ild: ˆ TM g Z iput wv rqu < uto rqu t ~ t : vst ods or / u g / u g t rl * T wvguid ts li ig-pss iltr TM o- propgtig ods i & Propgtig vst 4.-R. Cug NCKU
3-4.-R. Cug NCKU
3-4.-R. Cug NCKU
4.-R. Cug NCKU 3-3-3- T ods i Rtgulr Wvguids ˆ logitudil opots * => & Fro oudr oditios o t wvguid = = = = - ild = : tgtil si = = = = or B.C. => dtri & igvlu => t
4.-R. Cug NCKU 3-3. B usig sprtio o vrils utio o utio o * d d d d d d d d d d d d. or * to stis oudr oditios os os 3... os os Lt & di T wvguid od si os os si os si si os Not: od o rqu :uto wr T
3-4 Psil ig o uto rqu 截 止 頻 率 i : = rqu o iput wv = uto rqu pur igir & T wv ~ t u ps vloit u TM p utm w? => u pug utm d group vloit ug utm utm d * s 3-3-4 P 58 dirtil propgtio dl or puls sprdig: t / u g / u wvlgt i t guid : i & T wv ipd : Z T ˆ Z T g iput wv rqu < uto rqu T wv ~ t : vst ods rl or * T wvguid ts li ig-pss iltr g Z TM opropgtig ods i Propgtig vst 4.-R. Cug NCKU
3-5 4.-R. Cug NCKU
3-6 3-3-3 Modl irr d t Doit Rg... For TM ods : si si => I or t ~ i si => o wv ist => So TM od is t lowst TM od lowst uto rqu TM / / / / u TM p TM / / For T ods : os os => itr or ro... => i > T s t lowst uto rqu T / / u T p T / / => i < T s t lowst uto rqu / / T T T i is t doit od o rtgulr wvguid. T i * Doit rg : 6.57G? G doit od * Usl rg :.5.95.3-3 3-4 Tl 3-4.-R. Cug NCKU
3-7 4.-R. Cug NCKU
3-8 4.-R. Cug NCKU
3-9 4.-R. Cug NCKU
3-3-3-4 Proprtis o Propgtig Wvguid Mods Wv Vloitis & Disprsio Trsittd Powr 3-3-5 Proprtis o Mods Blow Cuto 3-3-6 Losss i Mtl Wvguids T R s [ / / / ] g g?db/ 3-3-7 Wvguid Couplrs Fgi. 3-9 3- Coil-to-Wvguid Couplr: T od 3-3-8 Wvguid Mod Filtrs 3-3-9 Lupd lts i Wvguid 4.-R. Cug NCKU
3-3-4 Diltri Wvguids 3-4- T Diltri Sl Wvguid 3-4- Fir-Opti Wvguid 光 纖 導 波 管 Multiod & Sigl-Mod Firs o totl rltio lddig ir or r r Totl rltio o ligtwv propgtig i ir-wvguid wit lddig 4.-R. Cug NCKU
3- 多 模 光 纖 單 模 光 纖 Diltri sl wvguid or Itgrtd optil-ltrois 積 體 光 學 電 路 4.-R. Cug NCKU
3-3 4.-R. Cug NCKU
3-4 DR 4.-R. Cug NCKU