应用于探测的220 GHz收发前端  

220 GHz transceiver front end for detection

作　　者：何月[1,2] 田遥岭 刘戈 黄昆[1,2] 邓贤进[1,2] 苏伟[2] HE Yue;TIAN Yaoling;LIU Ge;HUANG Kun;DENG Xianjin;SU Wei(Microsystem and Terahertz Research Center, China Academy of Engineering Physics, Chengdu 610200, China;Institute of Electronic Engineering, China Academy of Engineering Physics, Mianyang 621900, China)

机构地区：[1]中国工程物理研究院微系统与太赫兹研究中心,四川成都610200 [2]中国工程物理研究院电子工程研究所,四川绵阳621900

出　　处：《国防科技大学学报》2022年第1期34-39,共6页Journal of National University of Defense Technology

基　　金：国家重点研发计划资助项目(2018YFB1801504);中国工程物理研究院院长基金资助项目(YZJJLX2018009)。

摘　　要：基于太赫兹肖特基二极管的强非线性特性,采用多次谐波倍频和混频的方式,研制了可应用于连续波频率调制雷达探测的紧凑型220 GHz收发前端。为了使接收机实现高功率输出,220 GHz三倍频器的功放驱动采用4路功率合成的方式,实现70 GHz 300 mW高功率功率放大器模块,70 GHz高抑制度7阶腔体带通滤波器抑制高次谐波信号。为了使接收机具有高灵敏度,220 GHz谐波混频器采用hammer-head抑制结构和二极管精确噪声模型设计电路结构,接收中频链路采用开关控制来实现动态范围大于60 dB动态增益控制。220 GHz收发前端在215~225 GHz范围内实现了高于10 mW的最大功率输出,接收机最低噪声系数小于7 dB,增益动态范围大于60 dB(-7~54 dB)。Based on the strong nonlinear characteristics of terahertz schottky diode,a compact 220 GHz transceiver front-end for continuous wave frequency modulation radar detection was developed by using multiple harmonic frequency doubling and mixing method.In order to realize the transmitter with high power output,the power amplifier driver of 220 GHz frequency multiplier adopted 4-way power synthesis method to realize 70 GHz 300 mW high-power power amplifier module,and 70 GHz high suppression 7th order cavity bandpass filter to suppress high-order harmonic signal.In order to achieve a high sensitivity receiver,the 220 GHz harmonic mixer adopted hammer-head suppression structure and diode precise noise model to design the circuit structure,and the IF link adopted switch control to achieve dynamic gain control with dynamic range greater than 60 dB.The 220 GHz transceiver front-end achieves a maximum power output of more than 10 mW in the range of 215~225 GHz.The minimum noise figure of the receiver is less than 7 dB,and the gain dynamic range is greater than 60 dB(-7~54 dB).

关 键 词：倍频器 混频器 肖特基二极管 

分 类 号：TN95[电子电信—信号与信息处理]