高性能小型化平面微波濾波器研究.pdf

1、電子科技大學(xué)博士學(xué)位論文高性能小型化平面微波濾波器研究姓名：周明祺申請學(xué)位級別：博士專業(yè)：電磁場與微波技術(shù)指導(dǎo)教師：唐小宏20100501ABSTRACTABSTRACTMicrowavefiltershavethepropertyoffrequencyselectivetransmission，whichenablethemtotransmitenergyinoneormorepassbandsandtoattenuateenergy

2、inoneormorestopbandsThus，microwavefilterisoneofthemostimportantcomponentsinmicrowave／RFcircuitsandsystemsEmergingwirelesscommunicationapplicationscontinuetochallengemicrowave／RFfilterswithevenmorestringentrequirement—越曲e

3、rperformance，smallersizeandlowercostThisdissertationgivesadetailresearchondesigntheoryandtechnologyofhighperformanceandminiaturizedmicrowaveplanarban@assfilters，includingtransversalfilterextenddoubletfilteranddualbandfil

4、terItissummarizedasfollows：FirstlysystematicresearchOnthedesigntheoryofnewtransversalresonatorban@assfilterespeciallyonthecharacteristicofspecialtwo—ordertransversalfilter—openloopdualmodefilterBasedontheresearch，twonove

5、lfullycanonicalthreeordertransversalbandpassfitersusingplanartechnologyareproposedComparedwimthelatestreportedthreeordertransversalfilterwhichusingcavityandmicrostripmixedtechnologythesefiltershavetheadvantagesofmuchsmal

6、lersizesandflexibletransmissionZerOSarrangementSecondlyanovelEtypequarterwavelengthresonatorisproposedforthedesignofdualbandbandpassfilterBycombininghookfeedlineandpseudointerdigitalcouplingscheme，theE—typeresonatordualb

7、andfilternotonlyhascontrollablebandwidthsandverycompactsize，butalsohasverygoodhi班stopbandandlowstopbandrejectionlevelsThirdlyweapplythetheoryoftransversalresonatorfiltertothedesignofdualbandfilterTheproposedtransversaldu

8、albandfilteriScomprisedoftwodifferentresonatorsand，itcanrealizefullycanonicalcouplingschemeinbothpassbandsIthasmanyadvantagessuchascontrollablebandwidths，compactsize，flexibletransmissionZerOSarrangementandgoodfrequencyse