A 2.5GHz 90nm CMOS triple gain mode LNA for WiMAX applications

Che Sheng Chen*, Wen Shen Wuen, Kuei-Ann Wen

*Corresponding author for this work

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

10 Scopus citations

Abstract

This work presents a 2.5GHz 90nm CMOS triple gain mode LNA for WiMAX standard. Because of the high linearity and wide dynamic range requirement in WiMAX applications, the LNA provides triple gain mode for different receiving conditions. The LNA allows to be switched among high gain mode, IMD sinking mode, and high linear mode. Without introducing additional inductors in three gain modes, this work is suitable for system integration. The simulation result shows 1.8 dB noise figure can be achieved at high gain mode for small input signal levels. With IMD sinking technique, the input-referred IP3 is about 7.5 dBm for large interferences. For larger input signal levels, the input P1dB at high linear mode is -2.3 dBm.

Original languageEnglish
Title of host publication2007 International Symposium on Signals, Systems, and Electronics, URSI ISSSE 2007
Pages367-369
Number of pages3
DOIs
StatePublished - 1 Dec 2007
Event2007 International Symposium on Signals, Systems and Electronics, URSI ISSSE 2007 - Montreal, QC, Canada
Duration: 30 Jul 20072 Aug 2007

Publication series

NameConference Proceedings of the International Symposium on Signals, Systems and Electronics

Conference

Conference2007 International Symposium on Signals, Systems and Electronics, URSI ISSSE 2007
CountryCanada
CityMontreal, QC
Period30/07/072/08/07

Keywords

  • Amplifier noise
  • Circuit switching
  • Intermodulation distortion

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