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Published June 2012 | public
Book Section - Chapter

W-band heterodyne receiver module with 27 K noise temperature


We present noise temperature and gain measurements of a W-band heterodyne module populated with MMIC LNAs designed and fabricated using a 35 nm InP HEMT process. The module has a WR-10 waveguide input. GPPO connectors are used for the LO input and the I and Q IF outputs. The module is tested at both ambient (300 K) and cryogenic (25 K) temperatures. At 25 K physical temperature, the module has a noise temperature in the range of 27–45 K over the frequency band of 75–111 GHz. The module gain varies between 15 dB and 27 dB. The band-averaged module noise temperature of 350 K and 33 K were measured over 80–110 GHz for the physical temperature of 300 K and 25 K, respectively. The resulting cooling factor is 10.6.

Additional Information

© 2012 IEEE. Date of Current Version: 06 August 2012. The authors would like to thank Mary Soria and Heather Owen for help with assembly of the module, and Sandy Weinreb for lending IF amplifiers for this measurement. This work was carried out in part at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration. This research was sponsored in part by NSF grant AST-0905855.

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August 19, 2023
October 18, 2023