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Cryogenic W-band LNA for ALMA band 2+3 with average noise temperature of 24 K

Tang, Yulung and Wadefalk, Niklas and Kooi, Jacob W. and Schleeh, Joel and Moschetti, Giuseppe and Nilsson, Per-Åke and Pourkabirian, Arsalan and Cha, Eunjung and Tuzi, Silvia and Grahn, Jan (2017) Cryogenic W-band LNA for ALMA band 2+3 with average noise temperature of 24 K. In: 2017 IEEE MTT-S International Microwave Symposium. IEEE , Piscataway, NJ, pp. 176-179. ISBN 978-1-5090-6360-4.

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A cryogenic low noise amplifier that operates across the E and W-bands, from 65 GHz to 116 GHz, has been developed using 0.1-μm InP HEMT technology. Such wideband performance makes this work suitable for the ALMA telescope where two of its bands, 67–90 GHz of Band 2 and 85–116 GHz of Band 3, can be combined into one. At an ambient temperature of 5.5 K, this W-band LNA demonstrates an average noise temperature of 24.7 K with more than 21 dB gain and +/−3.0 dB gain flatness from 65 GHz to 116 GHz. To the best knowledge of the authors, this combination of bandwidth, gain flatness and noise temperature has not been demonstrated before.

Item Type:Book Section
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Kooi, Jacob W.0000-0002-6610-0384
Additional Information:© 2017 IEEE.
Subject Keywords:MMIC, cryogenic, W-band, LNA, InP, low noise amplifier, ALMA, noise temperature
Record Number:CaltechAUTHORS:20171017-074037432
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Official Citation:Y. Tang et al., "Cryogenic W-band LNA for ALMA band 2+3 with average noise temperature of 24 K," 2017 IEEE MTT-S International Microwave Symposium (IMS), Honololu, HI, USA, 2017, pp. 176-179. doi: 10.1109/MWSYM.2017.8058981 keywords: {Cryogenics;HEMTs;III-V semiconductor materials;Indium phosphide;MMICs;Noise measurement;ALMA;InP;LNA;MMIC;W-band;cryogenic;low noise amplifier;noise temperature}, URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:82401
Deposited By: Tony Diaz
Deposited On:17 Oct 2017 21:31
Last Modified:15 Nov 2021 19:50

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