D波段辐射计前端的设计与应用  

The study and application of D-band radiometer front-end

作　　者：刘军 何伟 乔海东 于伟华 吕昕 LIU Jun;HE Wei;QIAO Hai-Dong;YU Wei-Hua;LYU Xin(Beijing Key Laboratory of Millimeter Wave and Terahertz Technology,Beijing Institute of Technology,Beijing 100081,China)

机构地区：[1]北京理工大学毫米波与太赫兹技术北京市重点实验室,北京100081

出　　处：《红外与毫米波学报》2020年第6期704-708,共5页Journal of Infrared and Millimeter Waves

基　　金：Supported by National Natural Science Foundation of China(61771057)。

摘　　要：设计了D波段直接检波式辐射计前端,主要包括D波段检波器模块、D波段低噪声放大器模块和D波段标准增益喇叭天线.基于商用零偏二极管HSCH-9161研制出D波段检波器,测试结果显示在D波段内,最高灵敏度接近1600 mV/mW,当频率小于140 GHz时,灵敏度大于400 mV/mW,在大于140 GHz频段内,灵敏度优于120 mV/mW.基于自研D波段低噪声放大器芯片研制出D波段低噪放模块,测试结果显示最大增益为10.8 dB@139 GHz,在137~144 GHz频率范围内,增益大于7.8 dB,输入端回波损耗优于5 dB,输出端回波损耗优于8.5 dB.最终搭建D波段直接检波式辐射计前端进行成像实验验证.A D-band(110~170 GHz)direct detection radiometer front-end which consists of detector module,low noise amplifier module and standard gain horn antenna.The D-band detector is designed and fabricated based on zero-bias Schottky barrier diode HSCH-9161 and the measurement shows that the voltage sensitivity is larger than 400 mV/mW between 110~140 GHz,larger than 120 mV/mW in D-band and the maximal value reaches about 1600 mV/mW@110 GHz.The D-band LNA module is packaged with self-designed MMIC and the module measurement shows the peak gain is 10.8 dB@139 GHz,the gain higher than 7.8 dB from 137 GHz to 144 GHz,the measured input return loss(S11)and output return loss(S22)are better than-5 dB and 8.5 dB in operating frequencies,respectively.Finally,the imaging experiments based on this front-end are carried out.

关 键 词：D波段 辐射计前端 低噪声放大器 检波器 

分 类 号：TN454[电子电信—微电子学与固体电子学]