期刊
PROGRESS IN ELECTROMAGNETICS RESEARCH-PIER
卷 88, 期 -, 页码 275-287出版社
EMW PUBLISHING
DOI: 10.2528/PIER08111605
关键词
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A 35 GHz alternating current (AC) direct detection receiver for passive imaging has been studied and presented. The Monolithic Microwave Integrated Circuits (MMIC) Low Noise Amplifiers (LNAs) with high gain and wide band are cascaded to provide enough gain for high sensitivity in the receiver. On basic of discussing the structure and mechanical chopping modulation, the signal model and compensation mechanism is emphatically analyzed. Finally, the imaging result is given.
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