A 25-75 GHz broadband Gilbert-cell mixer using 90-nm CMOS technology

Jeng Han Tsai*, Pei Si Wu, Chin Shen Lin, Tian Wei Huang, John G.J. Chern, Wen Chu Huang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

85 Citations (Scopus)


A compact and broadband 25-75-GHz fully integrated double-balance Gilbert-cell mixer using 90-nm standard mixed-signal/radio frequency (RF) CMOS technology is presented in this letter. A broadband matching network, LC ladder, for Gilbert-cell mixer transconductance stage design is introduced to achieve the flatness of conversion gain and good RF port impedance match over broad bandwidth. This Gilbert-cell mixer exhibits 3 ± 2 dB measured conversion gain (to 50-Ω load) from 25 to 75 GHz with a compact chip size of 0.30 mm2. The OP1 dB of the mixer is 1 dBm and - 4 dBm at 40 and 60 GHz, respectively. To the best of our knowledge, this monolithic microwave integrated circuit is the highest frequency CMOS Gilbert-cell mixer to date.

Original languageEnglish
Pages (from-to)247-249
Number of pages3
JournalIEEE Microwave and Wireless Components Letters
Issue number4
Publication statusPublished - 2007 Apr
Externally publishedYes


  • CMOS
  • Gilbert-cell
  • Millimeter-wave (MMW)
  • Mixer
  • Monolithic microwave integrated circuit (MMIC)

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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