| （英）D波段辐射计前端的设计与应用 |
| 投稿时间：2020-03-01 修订日期：2020-11-11 点此下载全文 |
| 引用本文：刘军,何伟,乔海东,于伟华,吕昕.（英）D波段辐射计前端的设计与应用[J].红外与毫米波学报,2020,39(6):704~708].LIU Jun,HE Wei,QIAO Hai-Dong,YU Wei-Hua,LV Xin.The study and application of D-band radiometer front-end[J].J.Infrared Millim.Waves,2020,39(6):704~708.] |
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| 中文摘要: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1 600 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. |
| 中文关键词:D波段 辐射计前端 低噪声放大器 检波器 |
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| The study and application of D-band radiometer front-end |
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| Abstract: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 1 600 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. |
| keywords:D-band radiometer front-end low noise amplifier （LNA） detector |
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