一种应用于遥感的240GHz接收机研究  

Reaserch on 240GHz receiver for detection

作　　者：金亮 徐辉[1] 王国瑾 JIN Liang;XU Hui;WANG Guojin(China Academy of Space Technology(Xi’an),Xi’an 710000,China)

机构地区：[1]中国空间技术研究院西安分院,西安710000

出　　处：《空间电子技术》2024年第4期22-26,共5页Space Electronic Technology

摘　　要：随着大气遥感探测精度需求的不断提高,探测频率逐渐转向波长更具优势的太赫兹波段。接收机作为星载大气探测系统中的关键部件,其性能直接决定了系统探测灵敏度。为了满足日益迫切的星载太赫兹接收机需求,研制了一种工作频率在240GHz的星载太赫兹超外差接收机,基于单片微波集成电路技术和微组装工艺,具有高集成度的特点,可满足卫星载荷对于小型化和轻量化的需求。为了获得更加精确的测试结果,在电磁暗室中搭建了测试系统,实测结果表明在中频1GHz~4GHz带宽内接收机的平均噪声系数仅为7.6dB,链路增益约45dB,检波线性度大于0.99998,性能可满足探测系统的灵敏度需求。With the increasing demand for atmospheric detection accuracy,the terahertz has gotten attention for advantage in wavelengths.The performance of receiver is important to system,thus it plays a key role in atmospheric detection.In this paper,a 240GHz receiver for space application is presented to meet demands in terahertz receiver.The receiver adopt Monolithic Microwave Integrated Circuit technology for miniaturization and lightueight to adapt the complex environment of space application.A test system is set up to obtain accurate data,where the test results show that noise figure of receiver is 7.6dB in 1GHz~4GHz,conversion gain is 45dB and the degree of linearity is more than 0.99998.

关 键 词：大气 太赫兹 接收机 低噪声 

分 类 号：V443[航空宇航科学与技术—飞行器设计] TP393[自动化与计算机技术—计算机应用技术]