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A wide-band CMOS variable-gain low noise amplifier for multistandard terrestrial and cable TV tuner

  • Dong Gu Im*
  • , Seong Sik Song
  • , Hong Teuk Kim
  • , Kwyro Lee
  • *Corresponding author for this work
  • LG Corporation
  • Korea Advanced Institute of Science and Technology

Research output: Contribution to conferenceConference paperpeer-review

Abstract

A CMOS wide-band low noise amplifier (LNA) based on the current amplification for the multistandard terrestrial and cable tuner is proposed. Conventional wide-band LNAs suffer from the tradeoff between noise figure and wide-band input matching. By adopting the structure combined the common source (CS) amplifier with the common gate (CG) amplifier by the current amplification, the noise figure does not have any influence on wide-band input matching so that we can achieve low noise figure by the noise canceling and excellent wide-band input matching at the same time while allowing some variable gains. The proposed LNA is fabricated in 0.18-μm CMOS process and achieves a power gain of +15.5-5.5 dB, an average noise figure of 3.6 dB, an HP3 of -1 dBm at the maximum gain, and S11f -15 dB. The power consumption is 50.4 mW and chip area is 0.54 mm2.

Original languageEnglish
Title of host publicationProceedings of the 2007 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2007
Pages621-624
Number of pages4
DOIs
StatePublished - 2007
Event2007 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2007 - Honolulu, HI, United States
Duration: 2007.06.32007.06.5

Publication series

NameDigest of Papers - IEEE Radio Frequency Integrated Circuits Symposium
ISSN (Print)1529-2517

Conference

Conference2007 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2007
Country/TerritoryUnited States
CityHonolulu, HI
Period07.06.307.06.5

Keywords

  • Cable
  • Common gate amplifier
  • Common source amplifier
  • Current amplification
  • Low noise amplifier
  • Noise canceling
  • Terrestrial
  • Tuner
  • Wide-band

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