A wide tuning range gated varactor

Wallace Ming Yip Wong, Ping Shing Hui, Zhiheng Chen, Keqiang Shen, Jack Lau, Philip Ching Ho Chan, Ping Keung Ko

Research output: Journal article publicationJournal articleAcademic researchpeer-review

43 Citations (Scopus)


A wide tuning range gated varactor for radio frequency (RF) applications is described in this paper. The gated varactor is a three-terminal device. The third terminal helps achieve an improved tuning range. The measured tuning range of the varactor exceeds ±50%. The new device can be implemented with standard CMOS process without any post-processing. A 2 GHz prototype voltage-controlled oscillator (VCO) is implemented using the new varactor in a 0.35-μm CMOS process. The VCO achieved a sensitivity of 220 MHz/V.
Original languageEnglish
Pages (from-to)773-778
Number of pages6
JournalIEEE Journal of Solid-State Circuits
Issue number5
Publication statusPublished - 1 Dec 2000
Externally publishedYes

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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