High gain CMOS gilbert downconverter with wide-swing cascode current-mirror transconductor and load

Sheng Che Tseng*, Chin-Chun Meng, Guo-Wei Huang

*Corresponding author for this work

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

1 Scopus citations

Abstract

A downconversion micromixer with low-voltage cascode current mirrors at both transconductor and load stages has been implemented using the 0.18-μm CMOS technology in this paper. This micromixer has a single-to-differential RF input transconductance stage formed by the NMOS wide-swing cascode current mirror. PMOS wide-swing cascode current mirror is also employed to improve conversion gain while a super source follower is used at the output to reduce the output impedance and to transfer more power to the load. The fully integrated downconverter functions at 7 GHz and has the high conversion gain of 16 dB and high LO-to-IF isolation of 50 dB at 1.8 V supply voltage. The current consumption of the mixer core is 1 mA. Thanks to the low-voltage operation property of the wide-swing cascode current mirror, six transistors can be stacked within 1.8 V supply voltage.

Original languageEnglish
Title of host publication2007 IEEE Antennas and Propagation Society International Symposium, AP-S
Pages4513-4516
Number of pages4
DOIs
StatePublished - 2007
Event2007 IEEE Antennas and Propagation Society International Symposium, AP-S - Honolulu, HI, United States
Duration: 10 Jun 200715 Jun 2007

Publication series

NameIEEE Antennas and Propagation Society, AP-S International Symposium (Digest)
ISSN (Print)1522-3965

Conference

Conference2007 IEEE Antennas and Propagation Society International Symposium, AP-S
Country/TerritoryUnited States
CityHonolulu, HI
Period10/06/0715/06/07

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