SiGe HBT gilbert downconverter with an integrated miniaturized marchand balun for UWB applications

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

*Corresponding author for this work

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

9 Scopus citations

Abstract

A 15.5-dB conversion gain 0.35-μm SiGe HBT Gilbert mixer with the lumped-element Marchand balun for 3.1 GHz to 10.6 GHz UWB applications is implemented using standard silicon processes. This mixer has the 1.5-GHz IF 3-dB bandwidth as well as the 15.8-dB noise figure. The balun size is only (1.25 mm × 0.5 mm. Because of the balanced structure of the Marchand balun, the magnitude imbalance and phase difference of outputs are below 1 dB and about 184°, respectively. In the present of a lossy substrate, the dissipated loss of the balun is still less than 4 dB thanks to the advantage of the lumped-element technique. The total current consumption of the entire mixer is 13.9 mA at 5 V voltage supply while the chip size including probing pads is 1 mm × 0.9 mm.

Original languageAmerican English
Title of host publication2007 IEEE MTT-S International Microwave Symposium Digest
PublisherIEEE
Pages2141-2144
Number of pages4
ISBN (Print)1424406889, 9781424406883
DOIs
StatePublished - 2 Oct 2007
Event2007 IEEE MTT-S International Microwave Symposium, IMS 2007 - Honolulu, HI, United States
Duration: 3 Jun 20078 Jun 2007

Publication series

NameIEEE MTT-S International Microwave Symposium Digest
ISSN (Print)0149-645X

Conference

Conference2007 IEEE MTT-S International Microwave Symposium, IMS 2007
CountryUnited States
CityHonolulu, HI
Period3/06/078/06/07

Keywords

  • Downconverter
  • Lumped-element
  • Marchandbalun
  • Micromixer
  • SiGe HBT
  • Ultra-wideband

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