A SiGe BiCMOS VCO IC with Highly Linear Kvco for 5-GHz-Band Wireless LANs

A Class-C voltage-control-oscillator (VCO) IC with an amplitude feedback loop for ultra-low-voltage application is proposed. The Class-C VCO consists of an LC-VCO circuit and an amplitude feedback loop to shift LC-VCO bias condition from initial Class-AB start-up to steady Class-C low current oscillation. The amplitude feedback loop is formed by a detector and a comparator with low voltage supply. The LC-VCO IC has been designed, fabricated and fully evaluated using 65-nm CMOS technology. The fabricated Class-C VCO IC exhibits a measured phase noise of À111 dBc/Hz at 1 MHz offset from the 2.43 GHz carrier frequency at a supply voltage of only 0.3 V.

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“…At an operation voltage of only 0.3 V, figure-of-merit (FOM), which is widely used for performance comparison of VCOs [3], is:…”

Section: Fabrication and Measurementsmentioning

confidence: 99%

“…Several LC-VCOs were reported to improve the performance such as low phase noise [2], linear Kvco [3], ultra-wide band operation [4], and low DC power consumption [1,5]. A transformer-feedback VCO topology reported in [1] provides a good solution for the low voltage application.…”

Section: Introductionmentioning

confidence: 99%

A 0.3-V power supply 2.4-GHz-band Class-C VCO IC with amplitude feedback loop in 65-nm CMOS

Yang

Uchida

et al. 2014

Analog Integr Circ Sig Process

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“…Previously, several VCOs are reported to improve their performance such as low phase noise [1], linear Kvco [2] and ultra-wide band operation [3]. In this paper, an ultra-low operation voltage and low phase noise LC-VCO IC design is presented in 130nm CMOS technology Manuscript received on January 2, 2014 ; revised on February 2, 2014.…”

Section: Introductionmentioning

confidence: 99%

2.4-GHz Band Ultra-Low-Voltage LC-VCO IC in 130-nm CMOS

Yang

Wang

et al. 2014

ECTI-EEC

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An ultra-low-voltage LC-VCO IC has been demonstrated using 130nm CMOS technology. The LCVCO IC includes a cross-coupled NMOS pair, a single symmetric inductor, AMOS varactors with capacitor ac coupling and a buffer amplifier. The LCVCO IC is designed, fabricated and fully evaluated on wafer. The VCO IC exhibits measured frequency tuning range of 17.4% and phase noise of -137 dBc/Hz at 1 MHz oset from the 2.2 GHz carrier at a supply voltage of only 0.5 V.

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2.4 GHz-band ultra-low-voltage class-C LC-VCO IC in 65 nm CMOS technology

Yang

Uchida

et al. 2013

2013 Asia-Pacific Microwave Conference Proceedings (APMC)

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A SiGe BiCMOS VCO IC with Highly Linear Kvco for 5-GHz-Band Wireless LANs

Cited by 9 publications

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A 0.3-V power supply 2.4-GHz-band Class-C VCO IC with amplitude feedback loop in 65-nm CMOS

A 0.3-V power supply 2.4-GHz-band Class-C VCO IC with amplitude feedback loop in 65-nm CMOS

2.4-GHz Band Ultra-Low-Voltage LC-VCO IC in 130-nm CMOS

2.4 GHz-band ultra-low-voltage class-C LC-VCO IC in 65 nm CMOS technology

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