✦ LIBER ✦

Quadrature VCO based on an LC-ring in 0.18-μm CMOS technology

✍ Scribed by Sheng-Lyang Jang; Chia-Wei Chang; Chih-Chieh Shih; Ching-Wen Hsue

Publisher: John Wiley and Sons
Year: 2011
Tongue: English
Weight: 190 KB
Volume: 54
Category: Article
ISSN: 0895-2477
DOI: 10.1002/mop.26549

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✦ Synopsis

Abstract

In this letter, a new LC‐ring quadrature voltage‐controlled oscillator (QVCO) is proposed. The proposed 0.18‐μm CMOS QVCO uses a new composite LC resonator, and it occupies the die area of 0.61 × 0.95 mm^2^. At the supply voltage of 1.2 V, the total power consumption is 3.7 mW. The free‐running frequency of the QVCO is tunable from 3.86 to 4.22 GHz as the tuning voltage is varied from 0.0 to 1.2 V. The measured phase noise at 1 MHz frequency offset is −123.42 dBc/Hz at the oscillation frequency of 3.94 GHz and the figure of merit of the proposed QVCO is −190.38 dBc/Hz. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett, 54:474–477, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26549

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