A monolithic 5.9-GHz CMOS I/Q direct-down converter utilizing a quadrature coupler and transformer-coupled subharmonic mixers

Hsiao Chin Chen*, Tao Wang, Shey Shi Lu, Guo Wei Huang

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

18 Scopus citations

Abstract

We report the first monolithic 5.9-GHz CMOS I/Q direct-down converter by using a quadrature coupler and transformer-coupled subharmonic mixers (SHMs). Consuming 3.5 mW, each SHM achieves a voltage gain of 10.8 dB, 7.9-dBm IIP3, and 54-dBm IIP2. The input-referred de-offset due to local oscillator self-mixing is - 80.9 dBm.

Original languageEnglish
Pages (from-to)197-199
Number of pages3
JournalIEEE Microwave and Wireless Components Letters
Volume16
Issue number4
DOIs
StatePublished - 04 2006
Externally publishedYes

Keywords

  • Coupler
  • Direct-down conversion
  • Subharmonic mixer (SHM)
  • Transformer

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