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Sub-20-K noise temperature LNA for 67–90 GHz frequency band

Kangaslahti, Pekka and Cleary, Kieran and Kooi, Jacob and Samoska, Lorene and Lai, Richard and Barsky, Michael and Mei, Xiaobing and Sarkozy, Stephen and Varonen, Mikko (2017) Sub-20-K noise temperature LNA for 67–90 GHz frequency band. In: 2017 IEEE MTT-S International Microwave Symposium. IEEE , Piscataway, NJ, pp. 1965-1968. ISBN 978-1-5090-6360-4.

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Indium Phosphide MMIC LNAs are enabling new capabilities in instrument development. The development of arrays of hundreds of cryogenically-cooled millimeter wave receivers has previously been challenging, but is now achievable with highly repeatable MMIC processes and advances in cryogenic on-wafer testing of LNAs. We have developed InP HEMT LNA MMICs for the 67–90 GHz frequency band that is the last missing receiver system from the ALMA. These MMICs provided average performance of less than 22.5 K noise temperature over the frequency band and minimum noise temperature of 17.5 K at 72 GHz. These LNAs achieve NT=220K (NF=2.4dB) at 90 GHz for Earth remote sensing instrument on Sentinel-6. Our HRMR (High Resolution Microwave Radiometer) achieves NEDT < 0.05K enabling Sentinel-6 to measure coastal ocean topography at 3 km resolution with better than 1 cm accuracy.

Item Type:Book Section
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Kooi, Jacob0000-0002-6610-0384
Additional Information:© 2017 IEEE. We would like to acknowledge I. Ramos, S. Padmanabhan, A. Tanner and T. Gaier for the measurement and analysis of the HRMR radiometer data. The research was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration. Research was partially funded from National Radio Astronomy Observatory (NRAO) ALMA Development.
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National Radio Astronomy ObservatoryUNSPECIFIED
Subject Keywords:MMIC, LNA, InP, ALMA, cryogenic, ocean topography, Sentinel-6
Record Number:CaltechAUTHORS:20171018-074230547
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Official Citation:P. Kangaslahti et al., "Sub-20-K noise temperature LNA for 67–90 GHz frequency band," 2017 IEEE MTT-S International Microwave Symposium (IMS), Honololu, HI, USA, 2017, pp. 1965-1968. doi: 10.1109/MWSYM.2017.8059049 URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:82442
Deposited By: Tony Diaz
Deposited On:18 Oct 2017 23:30
Last Modified:09 Mar 2020 13:18

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