Wide tuning range CMOS quadrature ring oscillator of best figure of merit

Author

Pokharel, Ramesh K. ; Nizhnik, Oleg ; Tomar, A. ; Lingala, S. ; Kanaya, Haruichi ; Yoshida, Keiji

Author_Institution

Grad. Sch. of lSEE, Kyushu Univ. Nishi-ku, Fukuoka, Japan

fYear

2009

fDate

28-29 Sept. 2009

Firstpage

172

Lastpage

175

Abstract

This paper presents a low phase noise quadrature ring oscillator with new start-up circuit. The oscillator architecture is two-stage differential ring with additional pair of transition-assistance inverters. The circuit was implemented in 0.18 mum CMOS technology and the measured tuning range of the prototype device is from 1.7 GHz to 5.5 GHz and figure of merit (FOM) is -162 dB. The proposed area of application is the core of the local oscillator in a multi-standard wireless transceiver.

Keywords

CMOS integrated circuits; MMIC oscillators; UHF oscillators; circuit tuning; field effect MMIC; invertors; phase noise; transceivers; CMOS quadrature ring oscillator; frequency 1.7 GHz to 5.5 GHz; local oscillator; low phase noise oscillator; multistandard wireless transceiver; size 0.18 mum; start-up circuit; transition-assistance inverter; two-stage differential ring; CMOS technology; Circuits; Frequency; Inverters; MOSFETs; Phase noise; Ring oscillators; Tail; Tuning; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Integrated Circuits Conference, 2009. EuMIC 2009. European

Conference_Location

Rome

Print_ISBN

978-1-4244-4749-7

Type

conf

Filename

5296055

Link To Document

https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=2015515