A 7GHz wideband self-correcting quadrature VCO

Author

Arai, Tamio ; Hajimiri, Ali

Author_Institution

Fujitsu Labs. Ltd., Yokohama, Japan

fYear

2012

fDate

9-12 Dec. 2012

Firstpage

61

Lastpage

64

Abstract

A 4.0 to 6.6GHz self-correcting quadrature voltage controlled oscillator (QVCO) with phase compensation loop is implemented in a 65nm CMOS process. The topology couples IQ oscillation signals of two LC-VCOs, a phase shifter, and buffers with circular configuration. This paper introduces the idea to obtain low phase noise and accurate IQ phase quadrature oscillation signal, by employing phase compensation loop to correct the IQ phase error. The self-correcting QVCO achieves the IQ phase error less than a degree, and 1MHz offset phase noise -107dBc/Hz at 6.9GHz.

Keywords

CMOS analogue integrated circuits; MMIC oscillators; field effect MMIC; phase noise; phase shifters; voltage-controlled oscillators; CMOS process; IQ phase quadrature oscillation signal; LC-VCO; circular configuration; frequency 4.0 GHz to 6.6 GHz; frequency 6.9 GHz; frequency 7 GHz; low phase noise; phase compensation loop; phase shifter; self-correcting quadrature voltage controlled oscillator; size 65 nm; wideband self-correcting QVCO; Detectors; Low pass filters; Phase noise; Phase shifters; Transconductance; Voltage-controlled oscillators;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics, Circuits and Systems (ICECS), 2012 19th IEEE International Conference on

Conference_Location

Seville

Print_ISBN

978-1-4673-1261-5

Electronic_ISBN

978-1-4673-1259-2

Type

conf

DOI

10.1109/ICECS.2012.6463798

Filename

6463798