A common gate mixer with transconductance nonlinearity cancellation

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

3 Citations (Scopus)

Abstract

A highly linear Common Gate (CG) mixer is designed using transconductance linearization technique combined with elimination of harmonic feedback effect. One of the major contributors of third order nonlinearity in the mixer is the second derivative of transconductor (gm″). The Multiple Gated Transistor (MGTR) technique is employed in the transconductor of CG mixer to linearize the mixer. Also, an RF current source is used to remove harmonic feedback components which limit IIP3 enhancement. With CG MGTR transconductor, a LC folded cascode current commutating mixer is proposed. The proposed CG mixer for 900MHz CDMA application is designed with 0.13μm CMOS technology. Simulation result shows that conversion gain of 7dB NF of 15dB and IIP 3 of 20dBm while consuming 5.4mA at 1.2 V supply. Compared with conventional design, the proposed one shows 10dB IIP 3 improvement.

Original languageEnglish
Title of host publicationASICON 2009 - Proceedings, 2009 8th IEEE International Conference on ASIC
Pages458-460
Number of pages3
DOIs
Publication statusPublished - 2009 Dec 1
Event2009 8th IEEE International Conference on ASIC, ASICON 2009 - Changsha, China
Duration: 2009 Oct 202009 Oct 23

Publication series

NameASICON 2009 - Proceedings 2009 8th IEEE International Conference on ASIC

Other

Other2009 8th IEEE International Conference on ASIC, ASICON 2009
CountryChina
CityChangsha
Period09/10/2009/10/23

All Science Journal Classification (ASJC) codes

  • Hardware and Architecture
  • Electrical and Electronic Engineering

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  • Cite this

    Kim, T. W. (2009). A common gate mixer with transconductance nonlinearity cancellation. In ASICON 2009 - Proceedings, 2009 8th IEEE International Conference on ASIC (pp. 458-460). [5351319] (ASICON 2009 - Proceedings 2009 8th IEEE International Conference on ASIC). https://doi.org/10.1109/ASICON.2009.5351319