星载220 GHz分谐波混频器设计  

Design of a Spaceborne 220 GHz Subharmonic Mixer

作　　者：丁成 魏星[1] 施永荣 DING Cheng;WEI Xing;SHI Yongrong(Nanjing Electronic Devices Institute,Nanjing,210016,CHN;College of Electronic and Information Engineering/College of Integrated Circuits,Nanjing University of Aeronau-tics and Astronautics,Nanjing,211106,CHN)

机构地区：[1]南京电子器件研究所,南京210016 [2]南京航空航天大学电子信息工程学院/集成电路学院,南京211106

出　　处：《固体电子学研究与进展》2024年第1期24-28,共5页Research & Progress of SSE

基　　金：国家自然科学基金(62371229)。

摘　　要：为满足星载辐射计系统应用,提出了一款220 GHz次谐波混频器。基于平面GaAs肖特基二极管3D电磁模型,混频器电路和结构优化设计采用HFSS和ADS联合仿真实现。通过在50μm厚的石英基板上倒装反向并联二极管对以及采用纳米银胶将基板粘接在硅铝波导腔的工艺方式,设计并加工实现了一款210~240 GHz分谐波混频器,单边带最小变频损耗仿真结果为7.33 dB,实测变频损耗优于9.6 dB。按照某卫星规定的各项环境试验条件验证其在不同环境条件下的性能,结果证明该混频器试验前后一致性较好。To meet the application of the spaceborne radiometer system,a 220 GHz subharmonic mixer is proposed in this paper.Based on the 3D electromagnetic model of GaAs planar Schottky di-odes,the mixer circuits and structure are optimized as a whole by adopting RF circuits simulation soft-ware(ADS)and electromagnetic field simulation software(HFSS).The design and fabrication of 210-240 GHz subharmonic mixer were achieved by inverting antiparallel diodes pair on a 50μm thick quartz substrate,as well as bonding the substrate to the silicon aluminum waveguide cavity using nano-silver adhesive.The simulated minimum conversion loss of the single side band(SSB)is 7.33 dB,and the measured conversion loss is better than 9.6 dB.Its performance under various environmental test conditions,as stipulated by a certain satellite,is verified,and the results demonstrate good consis-tency of the mixer.

关 键 词：太赫兹 反向并联二极管对 分谐波混频器 肖特基二极管 

分 类 号：TN773[电子电信—电路与系统]