A Ultra Low Power 5.4-GHz Current-Reused VCO with Internal LC Series Resonance in 0.18-1-mu m CMOS Technology

I-Shing Shen*, Han-Tzung Ke, Christina Jou

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

Abstract

A novel circuit topology suitable for the implementation of CMOS voltage-controlled-oscillator (VCO) fabricated in TSMC 0.18-mu m has been presented in this paper. While current-reused structure can save dc power consumption dynamically, and measured dc power consumption at 1.2 V is about 0.9 mW. The measurement results exhibit a frequency tuning range of 140 MHz in the vicinity of 5.4 GHz. For high output level, we utilize the cascode structure to increase output swing and excite output power to -2.06 dBm at buffer. The measured phase noise at 1 MHz and DC current are -112.7 dBc/Hz and 0.75 mA, respectively. The result evaluated by means of a figure of merit is about -188 dBc/Hz.
Original languageEnglish
Title of host publication2010 ASIA-PACIFIC MICROWAVE CONFERENCE
PublisherIEEE
Pages457-460
ISBN (Print)978-4-902339-22-2
StatePublished - 2010
Event22nd Asia-Pacific Microwave Conference (APMC) - Yokohama, Japan
Duration: 7 Dec 201010 Dec 2010

Publication series

Name Asia Pacific Microwave Conference-Proceedings

Conference

Conference22nd Asia-Pacific Microwave Conference (APMC)
CountryJapan
City Yokohama
Period7/12/1010/12/10

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