W-BAND RADIOMETER SYSTEM WITH SWITCHING FRONT-END FOR MULTI-LOAD CALIBRATION

被引：9
|
作者：
Weissbrodt, Ernst [1 ]
Kallfass, Ingmar [1 ]
Huelsmann, Axel [1 ]
Tessmann, Axel [1 ]
Leuther, Arnulf [1 ]
Massler, Hermann [1 ]
Ambacher, Oliver [1 ]
机构：
[1] Fraunhofer Inst Appl Solid State Phys IAF, Freiburg, Germany
来源：
2011 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS) | 2011年
关键词：
radiometer; direct detection; W-band; calibration; MMIC; mHEMT; millimeter wave switch; active loads;
D O I：
10.1109/IGARSS.2011.6050069
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A W-band Dicke type radiometer with an MMIC single-pole-five-throw (SP5T) switch front-end and a Schottky diode detector is presented. The radiometer is intended to test active W-band loads as well as to generate passive millimeter wave imagery. By applying active or conventional hot and cold loads to the spare input ports of the SP5T, the radiometer can switch between the antenna, the external reference loads, and a monolithic integrated 50 Omega load. Hence, accurate radiometric multi-load calibration can be performed as well as standard Dicke operation.
引用
收藏
页码：3843 / 3846
页数：4
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