A 9-50-GHz Gilbert-cell down-conversion mixer in 0.13-μm CMOS technology

Chin Shen Lin, Pei Si Wu, Hong Yeh Chang, Huei Wang

Research output: Contribution to journalArticlepeer-review

103 Scopus citations


A broadband microwave/millimeter-wave (MMW) Gilbert-cell mixer using standard 1P8M 0.13-μm complementary metal oxide semiconductor (CMOS) technology is presented in this letter. Two radio frequency (RF) transformer baluns are used in RF- and local oscillator (LO)-ports to convert single-ended signals to differential signals. Thin film microstrip line is employed for the matching networks and transformer design. This mixer has a conversion gain of better than 5 dB from 9 to 50 GHz. Between 5 and 50 GHz, the RF- and LO-to-intermediate frequency (IF) isolations are better than 40 dB. The RF-to-LO and LO-to-RF isolations are all better than 20 dB. To the authors' knowledge, this is the first CMOS Gilbert-cell mixer operating to MMW frequency to date.

Original languageEnglish
Pages (from-to)293-295
Number of pages3
JournalIEEE Microwave and Wireless Components Letters
Issue number5
StatePublished - May 2006


  • Active mixer
  • Complementary metal oxide semi-conductor (CMOS)
  • Gilbert cell
  • Microwave monolithic integrated circuit (MMIC)
  • Wideband


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