OMMIC 70nm-mHEMT LNA design

Ying Chen, Kun Long Wu, Ching Ying Huang, Che Kun Chang, Xin Sun, Bin Li, Shu-I Hu

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

2 Scopus citations


This paper describes our progress in the design of cryogenic LNAs using OMMIC 70nm mHEMT for the Square-Kilometer-Array (SKA) project and the Shanghai 65-Meter radio-astronomical telescope. Different LNAs covering the aggregate 1∼40GHz frequency range are designed and measured on-wafer at room temperature, and Tn for the 1∼10, 5∼15, and 10∼40GHz LNAs are 80K, 90K, and 120K, respectively, with the gain all larger than 20dB. One 1∼10GHz LNA chip is then packaged and tested cryogenically, and the noise temperature improvement factor is 6∼8, which is smaller than what can be obtained from the WIN pHEMT. Performance repeatability among different chips has been carried out.

Original languageEnglish
Title of host publication2017 Asia Pacific Microwave Conference, APMC 2017 - Proceedings
EditorsIdnin Pasya
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages4
ISBN (Electronic)9781538606407
StatePublished - 8 Jan 2018
Event2017 IEEE Asia Pacific Microwave Conference, APMC 2017 - Kuala Lumpur, Malaysia
Duration: 13 Nov 201716 Nov 2017

Publication series

NameAsia-Pacific Microwave Conference Proceedings, APMC


Conference2017 IEEE Asia Pacific Microwave Conference, APMC 2017
CityKuala Lumpur


  • cryogenic
  • LNA
  • mHEMT
  • wideband

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