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A wide tuning range gated varactor

Authors Wong, WMY
Hui, PS
Chen, ZH
Shen, KQ
Lau, J.
Chan, PCH
Ko, PK
Issue Date 2000
Source IEEE journal of solid-state circuits , v. 35, (5), 2000, MAY, p. 773-779
Summary 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-mu m CMOS process. The VCO achieved a sensitivity of 220 MHz/V.
ISSN 0018-9200
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Language English
Format Article
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