Optimization of LC-VCO tuning range under different inductor/varactor losses limitations

Omar Abdelfattah,Ishiang Shih,Gordon W. Roberts,Yi-Chi Shih

Electrical and Computer Engineering（2014）

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摘要

This paper presents the main challenges in the design of wide tuning range LC voltage controlled oscillators (LC-VCOs) in CMOS technologies. Design trade-offs such as tank losses, phase noise, and power consumption are discussed and analyzed. A VCO that has a wide tuning range that covers frequencies from 5.5 GHz to 10.2 GHz was designed and fabricated in a 65 nm CMOS process. The worst case measured phase noise is -83 dBc/Hz at 1 MHz frequency offset from the carrier. The design occupies 0.125 mm2 silicon area, and dissipates 11 mW (excluding the buffers).

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关键词

CMOS integrated circuits,LC circuits,inductors,microwave oscillators,varactors,voltage-controlled oscillators,CMOS technologies,LC voltage controlled oscillators,LC-VCO,design tradeoffs,frequency 1 MHz,frequency 5.5 GHz to 10.2 GHz,inductor losses,phase noise,power 11 mW,power consumption,size 65 nm,tank losses,tuning range,varactor losses

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