Comparison of VCO Topology for Wideband Multi-Standard Applications

Author

Zhang, Shumin ; Zaghloul, Mona E. ; Su, Wansheng ; Elkis, Radmil ; Wu, Chun-li

Author_Institution

Hughes Network Syst., Germantown, MD

fYear

2006

fDate

4-5 Dec. 2006

Firstpage

1

Lastpage

4

Abstract

In this paper, three popular VCO topologies: cross-coupled, complementary cross-coupled, and differential Colpitts are investigated in terms of their performance for wideband wireless communication applications. Three VCOs, implemented in a standard 0.5 mum CMOS technology, are compared from the prospective of phase noise sensitivity to various noise sources, tuning range limitations, power dissipation, and design area. A new figure of merit (FOM) has been proposed to include tuning range into the overall performance metrics. Based on this metric, the experimental result shows that the differential Colpitts and cross-coupled VCO topologies can achieve the best FOM, wide tuning range (42%), and that they are therefore the best candidates for wide-band applications

Keywords

CMOS integrated circuits; phase noise; voltage-controlled oscillators; 0.5 micron; CMOS technology; cross-coupled VCO topologies; differential Colpitts oscillator; phase noise sensitivity; voltage controlled oscillator; wideband multistandard applications; wideband wireless communication applications; Application software; Circuit optimization; Circuit topology; MOSFET circuits; Network topology; Phase noise; Tuning; Voltage-controlled oscillators; Wideband; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless and Microwave Technology Conference, 2006. WAMICON '06. IEEE Annual

Conference_Location

Clearwater Beach, FL

Print_ISBN

1-4244-0849-0

Electronic_ISBN

1-4244-0849-0

Type

conf

DOI

10.1109/WAMICON.2006.351923

Filename

4161085