A 24-GHz VCO using active fet frequency doubler in 0.18-μm CMOS technology

X. S. Chen, Y. T. Chen, C. L. Lu, H. R. Chuang

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


In this article, a 24-GHz VCO composed of a 12-GHz VCO and an active frequency doubler is presented. This work is implemented by using the 0. 18-μm 1P6M CMOS process. The VCO and active frequency doubler with a 1.5 V supply consume 30 mA. The phase noise of measurement is - 107.5 dBc/Hz and - 123.1 dBc/Hz at 1-MHz and 10-MHz offset, respectively. A tuning range of 2.3 GHz is achieved by using varactor. The measurement shows a good efficiency of translation of frequency doubler and the oscillator has a good figure of merit (FOM) of -180 dBc/Hz.

Original languageEnglish
Pages (from-to)940-942
Number of pages3
JournalMicrowave and Optical Technology Letters
Issue number4
Publication statusPublished - 2009 Apr 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


Dive into the research topics of 'A 24-GHz VCO using active fet frequency doubler in 0.18-μm CMOS technology'. Together they form a unique fingerprint.

Cite this