作者: Giuseppe Moschetti , Arnulf Leuther , Herman Massler , Beatriz Aja , Markus Rosch
DOI: 10.1109/LMWC.2015.2451355
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摘要: This letter presents a 183 GHz low-noise amplifier (LNA), designed primarily for water vapor detection in atmosphere. The LNA requirements were defined by MetOp Second Generation (MetOp-SG) Microwave Sounder, Imager and Ice Cloud instruments. MetOp-SG is the European contribution to operational meteorological observations from polar orbit. advances current state-of-the-art InGaAs metamorphic high electron mobility transistor (mHEMT) technology. five-stage common-source MMIC utilizes transistors with gate length of 50 nm. On-wafer measurements show noise figure 3.5 dB at operative frequency, about 1 lower than previously reported mHEMT LNAs, gain $24\pm 2~{\rm dB}$ over bandwidth 160-200 GHz. input output matching are $-11~{\rm $-10~{\rm , respectively. Moreover, dc power dissipation optimal bias as low 24 mW.