Microwave and millimeter-wave cryogenic wideband LNA design and characterization

Ying Chen, Zheng Kai Li, Kun Long Wu, Bin Li, Shu-I Hu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations


This manuscript reports our progress in designing wideband LNAs for use in radio-astronomical receivers. These include two WIN-150nm and five WIN-100nm GaAs pHEMT LNAs. Following a general description of design methodology, the LNAs' simulated and measured results at room temperature will be presented. To make these LNAs eligible for low-temperature applications, a cryogenic noise measurement system using multi-point variable-temperature-load (VTL) method is constructed where the system is computer controlled, and both the noise calibration and de-embedding concerns are properly addressed. At 14K ambient temperature, the 5-10GHz LNA has its averaged Tn equal to 8K and the 8-20GHz LNA has its Tn around 10K.

Original languageEnglish
Title of host publication2015 Asia-Pacific Microwave Conference, APMC 2015 - Proceedings
EditorsFan Meng, Wei Hong, Xiao-Wei Zhu, Guang-Qi Yang, Zhe Song
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479987658
StatePublished - 18 Feb 2016
EventAsia-Pacific Microwave Conference, APMC 2015 - Nanjing, China
Duration: 6 Dec 20159 Dec 2015

Publication series

NameAsia-Pacific Microwave Conference Proceedings, APMC


ConferenceAsia-Pacific Microwave Conference, APMC 2015

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