第43卷第1期2023年2月Vol.43,No.1Feb.,2023固体电子学研究与进展RESEARCH&PROGRESSOFSSE星载高可靠性Ku波段GaN功率放大器芯片肖玮1∗金辉1余旭明1,2陶洪琪1,2(1南京电子器件研究所,南京,210016)(2微波毫米波单片集成和模块电路重点实验室,南京,210016)2022⁃06⁃28收稿,2022⁃12⁃22收改稿摘要:基于星载高可靠性的应用背景,采用0.20μmGaNHEMT工艺研制了一款12V工作电压的Ku频段功率放大器芯片。利用电热结合的分析方法,确定了管芯结构及工作电压。基于Load-pull测试获得GaNHEMT管芯的最佳输出功率和最佳效率阻抗,设计了一种带谐波匹配的高效率输出匹配电路,并通过引入有耗匹配,研制出了低压稳定的级间匹配电路。芯片面积为2.8mm×2.6mm,管芯漏极动态电压仿真峰值低于30V,实测结温小于80℃,满足宇航Ⅰ级降额要求。功率放大器在17.5~18.0GHz、漏压12V(连续波)条件下,典型饱和输出功率2.5W,附加效率38%,功率增益大于20dB,线性增益大于27dB,满足星载高效率要求。关键词:GaN;Ku波段;功率放大器;高可靠性;低压稳定中图分类号:TN72文献标识码:A文章编号:1000⁃3819(2023)01⁃0016⁃05SpaceborneHighReliabilityKu‑bandGaNPowerAmplifierMMICXIAOWei1JINHui1YUXuming1,2TAOHongqi1,2(1NanjingElectronicDevicesInstitute,Nanjing,210016,CHN)(2ScienceandTechnologyonMonolithicIntegratedCircuitsandModulesLaboratory,Nanjing,210016,CHN)Abstract:Basedonthebackgroundofspacebornehighreliability,aKu-bandpoweramplifierMMICworkingat12Voperatingvoltagewaspresented,whichwasfabricatedby0.20μmGaNHEMTtechnology.ThestructureandoperatingvoltageoftheGaNHEMTweredeterminedbytheanalysismethodofthermoelectriccombination.Basedontheoptimumpowerimpedanceandoptimumefficiencyimpedance,whichobtainedbyload-pullsystem,ahighPAEoutputmatchingcircuitwithharmonicsuppressionwasdesigned.Andalow-voltagestableinter-stagematchingcircuitwasde⁃signedbyintroducingloss-matching.TheMMICsizeis2.8mm×2.6mm.ThesimulatedRFvoltageofdrainislessthan30Vandthemeasuredjunctiontemperatureislessthan80℃,whichcanmeettherequirementsofaerospaceclassⅠderating.Thetypicalsaturatedoutputpoweris2.5W,thepoweraddedefficiencyisgreaterthan38%,thepowergainisgreaterthan20dBandth...