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Wide Tuning Range Inversion-Mode Gated Varactor and Its Application on a 2-GHz VCO

Authors Wong, Wallace HKUST affiliated (currently or previously).
Hui, Frankie HKUST affiliated (currently or previously).
Chen, Zhiheng HKUST affiliated (currently or previously).
Shen, Keqiang HKUST affiliated (currently or previously).
Lau, Jack HKUST affiliated (currently or previously)
Issue Date 1999
Source IEEE Symposium on VLSI Circuits, Digest of Technical Papers , 1999, p. 53-54
Summary This paper presents a novel inversion-mode three-terminal varactor with a capacitance ranging from 0.7 pF to 2.3 pF, achieving a ±53% variation in the capacitance. The new device is implemented in a 0.35-μm standard CMOS process. The measured quality factor is 22 at 2 GHz. A 2-GHz VCO is designed with this new varactor and is able to achieve a tuning range of 320 MHz with a maximum tuning gain of 220 MHz/V.
Note Proceedings of the 1999 Symposium on VLSI Circuits; Kyoto, Jpn; 17-19 June 1999; Code 56098
Sponsors This project is partially funded by the Hong Kong RGC Earmarked Research Grant.
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Language English
Format Conference paper
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