Monolithic broadband gilbert micromixer with an integrated marchand Balun using standard silicon IC process

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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

66 Scopus citations

Abstract

A single-ended wideband downconversion Gilbert microniixer is demonstrated in this paper using 0.35-μm SiGe BiCMOS technology. A transimpedance amplifier with resistive feedback is utilized in the IF stage while a broadband Marchand balun is employed to generate wideband differential local oscillator signals. The planar Marchand balun topology employed in this paper can generate truly balanced signals even in the presence of the lossy low-resistivity (∼10 Ω · cm) silicon substrate. A systematic approach to measure the frequency response of each individual stage in a Gilbert mixer is developed in this paper. This single-ended wideband mixer has the conversion gain of 15 dB, IP1dB of -19 dBm, IIP3 of -7 dBm, and the noise figure of 13 dB. The mixer works from 3.5 to 14.5 GHz.

Original languageEnglish
Pages (from-to)4362-4371
Number of pages10
JournalIEEE Transactions on Microwave Theory and Techniques
Volume54
Issue number12
DOIs
StatePublished - 1 Dec 2006

Keywords

  • Downconverter
  • Marchand balun
  • Microniixer
  • SiGe BiCMOS
  • Silicon substrate
  • Transimpedance amplifier (TIA)
  • Wideband

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