{"title":"A Fully-Integrated $S$-Band Differential LNA in $0.15-\\mu \\mathrm{m}$ GaAs pHEMT for Radio Astronomical Receiver","authors":"Wei-Cheng Huang, Chau-Ching Chiong, Huei Wang","doi":"10.1109/RFIT.2018.8524069","DOIUrl":null,"url":null,"abstract":"A fully-integrated S-band high-gain MMIC low noise amplifier (LNA) with differential input and single-ended output is presented and implemented in $0.15-{\\mu} \\mathbf{m}$ GaAs pHEMT for Square Kilometre Array (SKA) astronomical receiver. The low-loss input noise matching network is designed, and the fully on-chip LC balun is introduced between the first stage LNA core and the second stage amplifier to improve overall system noise figure. The 1-dB bandwidth of the LNA covers from 1.5 to 3.7 GHz. The measurement results demonstrate 31.8-dB gain, average in-band noise figure of 0.73 dB with DC power consumption of 25 mW. The chip area is $2.5 \\times 2\\ \\mathbf{mm}^{2}$. Also, a noise figure measurement method for the 3-port differential-input-to-single-ended-output amplifiers is introduced in this paper.","PeriodicalId":297122,"journal":{"name":"2018 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2018-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2018 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/RFIT.2018.8524069","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
A fully-integrated S-band high-gain MMIC low noise amplifier (LNA) with differential input and single-ended output is presented and implemented in $0.15-{\mu} \mathbf{m}$ GaAs pHEMT for Square Kilometre Array (SKA) astronomical receiver. The low-loss input noise matching network is designed, and the fully on-chip LC balun is introduced between the first stage LNA core and the second stage amplifier to improve overall system noise figure. The 1-dB bandwidth of the LNA covers from 1.5 to 3.7 GHz. The measurement results demonstrate 31.8-dB gain, average in-band noise figure of 0.73 dB with DC power consumption of 25 mW. The chip area is $2.5 \times 2\ \mathbf{mm}^{2}$. Also, a noise figure measurement method for the 3-port differential-input-to-single-ended-output amplifiers is introduced in this paper.
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