Differential VCO design with a wide frequency tuning range

Author

Lin, Liang ; Yin, Wen-Yan ; Mao, Junfa ; Wang, Yu-Yang

Author_Institution

Center for Microwave & RF Technol., Shanghai Jiao Tong Univ., Shanghai

fYear

2006

fDate

12-15 Dec. 2006

Firstpage

993

Lastpage

996

Abstract

New differential stacked spiral inductors were employed in our design of VCOs fabricated using the CMOS 0.18 mum technology in this paper. The frequency tuning range of these VCOs were extended significantly, and the measured oscillation frequencies cover from 1.69 to 2.1375 GHz, with 23.3% tuning range and phase noise about -118.41 dBc/Hz at 1 MHz theoretically. The core current of these VCOs is about 25 mA at 1.8 V supply voltage. What is more, the VCO designed only occupies on-chip area of 365 times 504 mum², which is much smaller than that of other VCOs reported in the literature recently.

Keywords

CMOS integrated circuits; UHF oscillators; circuit tuning; inductors; voltage-controlled oscillators; CMOS technology; differential VCO design; frequency 1.69 GHz to 2.1375 GHz; spiral inductors; wide frequency tuning range; CMOS technology; Frequency measurement; Inductors; Noise measurement; Phase measurement; Phase noise; Spirals; Tuning; Voltage; Voltage-controlled oscillators; VCO; cross-coupled; differential stacked spiral inductor; frequency tuning range; phase noise;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2006. APMC 2006. Asia-Pacific

Conference_Location

Yokohama

Print_ISBN

978-4-902339-08-6

Electronic_ISBN

978-4-902339-11-6

Type

conf

DOI

10.1109/APMC.2006.4429578

Filename

4429578