基于ltcc技术的ka频段谐波振荡器分析

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1、ABSTRCATABSTRACTMillimeter-wavesystemhasbeenwidelyusedinsatellitecommunicationsystems,electroniccountermeasuringsystemsandpoint-to-pointcommunicationsystemsbecauseofitsadvantagessuchassmallvolume,highresolutionandwideband.Oscillatorsofmillimeter-wavesystemsareoneofhottopics.The

2、ybringstringentspecificationsintermsofminiaturization,lowphasenoiseandlowcost.Generally,techniquestoimplementmillimeter-waveoscillationarefrequencymultiplication,push-pushorNthpush,directoscillation,andsoon.Thesemethodshavemoreorlessdrawbacks,soitisnecessarytostudynewmethodstod

3、evelopmillimeter-wavesources.ThispaperresearchesaKa-bandharmonicoscillatorbasedonlow-temperatureco-firedceramic(LTCC)technology.Purposesoftheresearchincludepresentingtheoreticalandtechnicalsupportsformillimeter-wavesourcesusedindistance/velocity-measuringradar.Inthispaper,thefu

4、ndamentalfrequencyoftheoscillatoris15GHz.Themaintaskistogetahighoutputpoweratthesecondharmonicfrequency.Specifically,itincludesasfollow:1)Studyingtherelativetheoryandtechnologyofhighoutputpoweratthesecondharmonicfrequency.2)Studyingtherelativetheoryofphasenoiseinharmonicoscilla

5、tor.3)Basedonthethree-dimensionalstructureinLTCCtechnology,thispaperproposesahighperformanceKa-bandband-passfilterusingsubstrateintegratedwaveguide(SIW)andaKu-bandinter-digitalfilterusingdifferentlayerplacedstripe-lineresonators.Allfiltershavesmallsizeandgoodperformanceinpassba

6、nd.Theyareusedasoutputfilteringforfundamentalandsecondharmoniccomponents.4)AhighQcylinderresonatorisproposedinLTCCwithanunloadQfactorupto212andasizeof5mm*5mm,whichisverifiedfromfullwaveEMsimulation.ThisresonatoriscoupledbyCPWendswithametalprobe,anditisusedasthefrequencyselectiv

7、enetwork.5)Akeyissueinmillimeter-waveactivecircuitsishowtorealizeDCbias.ThispaperproposesasmallsizeandthreedimensionalDCbiasbasedonLTCCtechnology,whichII万方数据ABSTRACTexhibitsgoodsuppressiononthefundamentalandsecondharmonicfrequencysignals.6)Byjointsimulationsofpassiveandactiveci

8、rcuits,anoscillatorthatoscillatesat15GHzisrealized.The