LTCC雷達接收機前端設(shè)計與實現(xiàn).pdf

1、獨創(chuàng)性聲明本人聲明所呈交的學位論文是本人在導師指導下進行的研究工作及取得的研究成果。據(jù)我所知，除了文中特另tlDH以標注和致謝的地方外，論文中不包含其他人已經(jīng)發(fā)表或撰寫過的研究成果，也不包含為獲得中國工程物理研究院或其他教育機構(gòu)的學位或證書使用過的材料。與我一同工作的同志對本研究所做的任何貢獻均己在論文中作了明確的說明并表示謝意。學位論文作者簽名：豫鵬簽字日期：砂胡年牛月醪日學位論文版權(quán)使用授權(quán)書本學位論文作者完全了解并接受時1國工程物

2、理研究院研究生部有關(guān)保存、使用學位論文的規(guī)定，允許論文被查閱、借閱和送交國家有關(guān)部門或機構(gòu)，同時授權(quán)中國工程物理研究院研究生部可以將學位論文全部或部分內(nèi)容編入有關(guān)數(shù)據(jù)庫進行檢索，可以影印、縮印或掃描等復制手段保存、匯編學位論文。學位論文作者簽名：住簽字門期：力韶年午月躬F1導師簽名：圖柙午LTCC雷達接收機前端設(shè)計與實現(xiàn)AbstractAlowtemperaturecofiredceramic(LTCC)radarreceiverfro

3、ntendmoduleisdesignedandrealizedinthispaperTheprocessofcircuitdesignandrealizationiselaboratedinthefollowingthreeaspectsrespectively：theselectionofoverallplan，thedesignandrealizationofpassivecircuitsandthatofactivecircui

4、ts1Inthispaperthetwochannel—quadrature—outputsuperheterodynereceiverfront—endisselectedastheoverallplanThecircuitindexsofeachcircuitcomponentareallocatedandsubsequentlythecomponentsareselectedAsystemsimulationofthewholer

5、eceiverfrontendmoduleisperformedandthesimulationresultis：gain4253dB，switchisolation86dB，noisefigure19dBThisresultsatisfiestheexpectedvalue2ThedesignmethodofLTCCpassivecircuitsismainlyresearchedinthisarticleAnovelmultilay

6、eredLTCCmicrowavebandpassfilterisproposedandrealizedThefilteriscomposedofL／4steppedimpedanceresonators(SIR)，whicharearrangedasarotatesymmetrystructureontwolayersrespectivelySuchanarrangementCanreducethefiltersizeandsuppr

7、essharmonicseffectivelyTheothermicrowavepassivecomponentssuchasthespliRerthe3dB90。directionalcouplerarealsodesignedwith3Dmultilayeredstructures，increasingtheintegrationdensityofthemoduleeffectivelySimulationandtolerancea

8、nalysisofallthepassivecomponentsaremadeby3DelectromagneticfieldsimulationsoftwareHFSS，andthen，allthepassivecomponentsarefabricatedandtestedThetestresultsaccordwiththesimulationresultsapproximately3Astotheactivecircuits，t

9、hemicrowavelimiterRFamplifiers，microwaveswitches，IQquadraturemodulatorIFamplifiersandSOonaredesignedandrealizedinthispaperFinallythewholereceiverfront—endmoduleisfabricatedandtestedThetestresultis：thegainsofthetwochannel