An oscillator and a mixer for 140-GHz heterodyne receiver front-end based on SIGe HBT technology

Daekeun Yoon, Kiryong Song, Mehmet Kaynak, Bernd Tillack, Jae-Sung Rieh

Research output: Contribution to journalArticle

1 Citation (Scopus)


This paper reports a couple of key circuit blocks developed for heterodyne receiver front-ends operating near 140 GHz based on SiGe HBT technology. Firstly, a 123-GHz oscillator was developed based on Colpitts topology, which showed - 5 dBm output power and phase noise of -107.34 dBc/Hz at 10 MHz. DC power dissipation was 25.6 mW. Secondly, a 135 GHz mixer was developed based on a modified Gilbert Cell topology, which exhibited a peak conversion gain of 3.6 dB at 1 GHz IF at fixed LO frequency of 134 GHz. DC power dissipation was 3 mW, which mostly comes from the buffer.

Original languageEnglish
Pages (from-to)30-34
Number of pages5
JournalJournal of Semiconductor Technology and Science
Issue number1
Publication statusPublished - 2015



  • Mixer
  • Oscillator
  • SiGe HBT

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

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