A fully integrated 5.35-GHz CMOS VCO and a prescaler

Author

Chih-Ming Hung ; Floyd, B.A. ; O, K.K.

Author_Institution

Dept. of Electr. Eng. & Comput. Eng., Florida Univ., Gainesville, FL, USA

fYear

2000

fDate

10-13 June 2000

Firstpage

69

Lastpage

72

Abstract

A 5.35-GHz monolithic VCO and a prescaler have been fabricated in a 0.25-/spl mu/m CMOS process. The VCO has a tuning range of 336 MHz and phase noise of -117 dBc/Hz at a 1-MHz offset and 7-mW power consumption. The low phase noise is achieved by using only PMOS transistors in the VCO core and by optimizing the resonator layout. The prescaler utilizes a variation of the source coupled logic and consumes only 4.1 mW at VDD=1.5 V and 5.4 GHz. A second prescaler operating at 9.96 GHz and 2.5-V VDD is also demonstrated.

Keywords

CMOS analogue integrated circuits; MMIC oscillators; circuit tuning; integrated circuit noise; low-power electronics; phase noise; prescalers; voltage-controlled oscillators; wireless LAN; 0.25 micron; 1.5 V; 4.1 mW; 5.35 GHz; 7 mW; CMOS VCO; PMOS transistors; phase noise; power consumption; prescaler; resonator layout; source coupled logic; tuning range; CMOS process; Circuit noise; Energy consumption; MOSFETs; Noise reduction; Phase noise; Voltage; Voltage-controlled oscillators; White noise; Wireless LAN;

fLanguage

English

Publisher

ieee

Conference_Titel

Radio Frequency Integrated Circuits (RFIC) Symposium, 2000. Digest of Papers. 2000 IEEE

Conference_Location

Boston, MA, USA

ISSN

1529-2517

Print_ISBN

0-7803-6280-2

Type

conf

DOI

10.1109/RFIC.2000.854419

Filename

854419