Abstract
A dual-resonance complementary Colpitts voltage-controlled oscillator (VCO) is proposed to serve as a dual-band oscillator operated at 4.3 and 11.7 GHz.The VCO consists of two single-ended dual-resonance LC-tank complementary Colpitts oscillators sharing a common varactor-switching LC resonator. The proposed VCO has been implemented with the TSMC 0.18 μm 1P6M CMOS technology and the core power consumption is 3.60/3.96 mW at the supply voltage of 1.2 V. The VCO has figure of merit −192.7/−189.4 dBc/Hz at high/low band, respectively. The die area of the dual-band VCO is 0.822 × 0.628 mm2. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1494–1497, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27626
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