340GHz固定调谐分谐波混频器  

A fixed-tuned 340GHz sub-harmonic mixer

作　　者：杨大宝[1] 张立森[1,2] 徐鹏 赵向阳 顾国栋[1] 梁士雄[1,2] 吕元杰 冯志红[1,2] Yang Dabao;Zhang Lisen;Xu Peng;Zhao Xiangyang;Gu Guodong;Liang Shixiong;Lv Yuanjie;Feng Zhihong(The 13^(th)Research Institute of China Electronics Technology Group Corporation,Shijiazhuang 050051,China;National Key Laboratory of Application Specific Integrated Circuit,Shijiazhuang 050051,China)

机构地区：[1]中国电子科技集团公司第十三研究所,河北石家庄050051 [2]专用集成电路国家级重点实验室,河北石家庄050051

出　　处：《红外与激光工程》2022年第12期99-105,共7页Infrared and Laser Engineering

摘　　要：基于最新研制的小阳极结反向并联肖特基二极管芯片,设计和制造了320~360GHz固定调谐分谐波混频器。混频器的结构采用的是传统电场(E)面腔体剖分式结构:将二极管芯片倒装焊粘在石英基片上,再用导电银胶将石英电路悬置粘结在混频器下半个腔体上。电路设计采用场路相结合的方法:用场仿真软件建立混频电路各个功能单元的S参数模型,将它们代入非线性电路仿真软件中与二极管结相结合进行混频器性能整体仿真优化。最终测试结果表明,谐波混频器的双边带在4~6mW的本振功率驱动下,在320~360GHz超过12%带宽范围内,双边带变频损耗均小于9dB;混频器在310~340GHz频带范围内,双边带噪声温度最低为780K。声温度最低为780K。The design and fabrication of a fixed-tuned 320-360GHz sub-harmonic mixer,featuring a newly developed small anode junction anti-parallel pair of planar Schottky diodes chip,are presented.A traditional E-plane split-block waveguide architecture was adopted in the mixer’s design:the diodes chip was flip-chipped onto a quartz-based microstrip circuit and suspendedly glued to the bottom half of an equally split waveguide block with silver epoxy.A method of combination of field and circuit was applied to simulate and optimize the performance of the mixing circuit.Every functioning part of the mixing circuit was calculated with field simulating software to create its own S-parameters package,which was then combined with the diodes’barriers to be used by nonlinear circuit simulating software to simulate and optimize the performance of the mixer.The final test indicates that the ndicates that the mixer’s double side band(DSB)conversion losses were lower than 9dB,over 12% of bandwidth(320-360 GHz),with 4-6mW of local oscillator(LO)power input;and at room temperature a minimum DSB equivalent noise temperature of 780K was measured for RF frequency between310 GHz and 340GHz.

关 键 词：固定调谐 谐波混频器 反向并联 变频损耗 

分 类 号：TN773.2[电子电信—电路与系统]