A CMOS Backgate-Coupled QVCO Based on Back-to-Back Series Varactor Configuration for Minimal AM-to-PM Noise Conversion

A new fully integrated, dual‐band CMOS voltage controlled oscillator (VCO) is presented. The VCO is composed of a p‐core cross‐coupled and an n‐core cross‐coupled Colpitts oscillator with dual‐resonance LC tank and was implemented in 90‐nm CMOS technology with 1.15 V supply voltage. The circuit allows the VCO to operate at two resonant frequencies with a common LC tank. This VCO is configured with 6.3 and 10 GHz frequency bands with differential outputs. The dual‐band VCO operates at 6.11–6.413 GHz and 9.72–10.24 GHz. The phase noises of the VCO operating at 9.72 and 6.4 GHz are −116.31 dBc/Hz and −122.79 dBc/Hz at 1‐MHz offset, respectively, while the VCO draws 4/4.28 mA and 4.6/4.92 mW consumption at high/low frequency band from a 1.15‐V supply. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:1590–1593, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26882

show abstract

A dual‐resonance CMOS voltage‐controlled oscillator with enhanced performance through new varactor topology

Jang

Cheng

Chang

et al. 2012

Micro & Optical Tech Letters

View full text Add to dashboard Cite

show abstract

A Low Voltage Quadrature VCO Implemented With Series Frequency Doublers

Jang

Hsue

et al. 2009

IEEE Microw. Wireless Compon. Lett.

View full text Add to dashboard Cite

A Low-Power K-Band CMOS VCO With Four-Coil Transformer Feedback

Liu

Chen

Chang

et al. 2010

IEEE Microw. Wireless Compon. Lett.

View full text Add to dashboard Cite

A K-band low-power and low-phase-noise voltagecontrolled oscillator (VCO) is presented in this letter. By utilizing four-coil transformer feedback and forward body bias topology, good performances are obtained under a low-power supply with a 5.1% tuning range and a phase noise of 109 8 dBc/Hz at 1 MHz offset from the 21.37-GHz carrier frequency. The core circuit of this VCO only consumes 3.5 mW with a 0.6-V supply voltage and a 0.55-V body bias.Index Terms-Forward body bias, K-band, low power, transformer feedback.

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

hi@scite.ai

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

A CMOS Backgate-Coupled QVCO Based on Back-to-Back Series Varactor Configuration for Minimal AM-to-PM Noise Conversion

Cited by 6 publications

References 9 publications

A dual‐resonance CMOS voltage‐controlled oscillator with enhanced performance through new varactor topology

A dual‐resonance CMOS voltage‐controlled oscillator with enhanced performance through new varactor topology

A Low Voltage Quadrature VCO Implemented With Series Frequency Doublers

A Low-Power K-Band CMOS VCO With Four-Coil Transformer Feedback

Contact Info

Product

Resources

About