A millimeter-wave multifunction HEMT mixer

Moonil Kim, J. B. Hacker, E. A. Sovero, D. S. Deakin, J. H. Hong

Research output: Contribution to journalArticle

6 Citations (Scopus)


A monolithic chip with a single 80-μm HEMT device, 1.25 × 3.0 mm2 in size, has been tested as both a fundamental and a subharmonic mixer. With input filter networks for K- and Q-bands providing two separate radio frequency/local oscillator (RF/LO) channels to the gate, the chip produces an IF signal from dc to 4 GHz at the drain. The mixer operates in three independent modes with the highest conversion gain of 6.9 dB in K-band fundamental mode, the best DSB noise figure of 4.4 dB in Q-band fundamental mode, and better than 20 dB of on-chip LO-to-RF isolation in Q-band subharmonic mode. In all three modes, the active mixer has shown positive conversion gain.

Original languageEnglish
Pages (from-to)154-156
Number of pages3
JournalIEEE Microwave and Wireless Components Letters
Issue number4
Publication statusPublished - 1999 Apr 1
Externally publishedYes



  • HEMT mixer
  • Millimeter-waves
  • Subharmonic mixer

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Kim, M., Hacker, J. B., Sovero, E. A., Deakin, D. S., & Hong, J. H. (1999). A millimeter-wave multifunction HEMT mixer. IEEE Microwave and Wireless Components Letters, 9(4), 154-156.