A PVT-robust feedback class-C VCO using an oscillation swing enhancement technique

Author

Deng, Wei ; Okada, Kenichi ; Matsuzawa, Akira

Author_Institution

Dept. Phys. Electron., Tokyo Inst. of Technol., Tokyo, Japan

fYear

2012

fDate

Jan. 30 2012-Feb. 2 2012

Firstpage

563

Lastpage

564

Abstract

This paper presents a feedback class-C VCO with PVT-robustness and enhanced oscillation swing. The proposed VCO starts oscillation as a differential LC-VCO for robust startup, and automatically adapts to an amplitude-enhanced class-C VCO in steady-state for lower phase noise. The proposed VCO is implemented in a 0.18μm CMOS process. The measured phase noise at room temperature is -125 dBc/Hz @ 1MHz offset with a power dissipation of 3.4-mW, from a carrier frequency of 4.84-GHz. The figure-of-merit is -193 dBc/Hz.

Keywords

CMOS analogue integrated circuits; MMIC oscillators; field effect MMIC; oscillations; phase noise; voltage-controlled oscillators; CMOS process; PVT-robust feedback class-C VCO; amplitude-enhanced class-C VCO; carrier frequency; differential LC-VCO; frequency 1 MHz; frequency 4.84 GHz; oscillation swing enhancement technique; phase noise; power 3.4 mW; power dissipation; size 0.18 mum; Detectors; Noise measurement; Phase noise; Robustness; Temperature measurement; Voltage-controlled oscillators;

fLanguage

English

Publisher

ieee

Conference_Titel

Design Automation Conference (ASP-DAC), 2012 17th Asia and South Pacific

Conference_Location

Sydney, NSW

ISSN

2153-6961

Print_ISBN

978-1-4673-0770-3

Type

conf

DOI

10.1109/ASPDAC.2012.6165019

Filename

6165019