5-6 GHz CMOS low-noise direct conversion receiver using a differential RF VGA with a differential inductor load

Wei Ling Chang, Chin-Chun Meng, Chih Kai Chang, Guo Wei Huang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

A low-noise low-power direct conversion receiver with a differential RF VGA is demonstrated using 0.18um CMOS technology. A topology that uses a differential inductor load for a differential RF VGA is employed for the single-to-differential conversion. Since the common-mode rejection ratio of a differential variable gain amplifier is increased by the mutual magnetic coupling in a differential inductor load, this work achieves noise floor less than 5 dB covering the 5-6 GHz band. Moreover, the conversion gain is around 50 dB and the total current consumption is 4.75 mA at 1.8 V supply voltage.

Original languageEnglish
Title of host publicationRFIT 2016 - 2016 IEEE International Symposium on Radio-Frequency Integration Technology
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781509012350
DOIs
StatePublished - 27 Sep 2016
Event2016 IEEE International Symposium on Radio-Frequency Integration Technology, RFIT 2016 - Taipei, Taiwan
Duration: 24 Aug 201626 Aug 2016

Publication series

NameRFIT 2016 - 2016 IEEE International Symposium on Radio-Frequency Integration Technology

Conference

Conference2016 IEEE International Symposium on Radio-Frequency Integration Technology, RFIT 2016
CountryTaiwan
CityTaipei
Period24/08/1626/08/16

Keywords

  • CMOS
  • LNA
  • VGA
  • differential inductor
  • direct-conversion receiver
  • low-noise
  • low-power

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