A Low-Voltage 2.4GHz VCO with 3D Helical Inductors

Author

Lee, Shao-Hua ; Chuang, Yun-Hsueh ; Chi, Li-Ren ; Jang, Sheng-Lyang ; Lee, Jian-Feng

Author_Institution

Dept. of Electron. Eng., Nat. Taiwan Univ. of Sci. & Technol., Taipei

fYear

2006

fDate

4-7 Dec. 2006

Firstpage

518

Lastpage

521

Abstract

The design of a low-voltage 2.4GHz voltage controlled oscillator (VCO) employing 3D helical inductors fabricated in the 0.18-mum 1P6M CMOS technology is reported. The LC resonators consist of two 3D helical inductors and varactors. The aim of using 3D inductor is to reduce chip size, the inductance of inductor is designed to be 2nH. and the size of the inductor is 155times155 mum². At the supply voltage of 1.0V, the VCO core consumes power of 2.6mW and the measured phase noise is -116.8dBc/Hz at 1MHz offset from the oscillation frequency of 2.46GHz. The output frequency can be tuned from to 2.06GHz to 2.5GHz

Keywords

CMOS analogue integrated circuits; UHF oscillators; inductors; voltage-controlled oscillators; 0.18 micron; 1.0 V; 1P6M CMOS technology; 2.06 to 2.5 GHz; 2.6 mW; 3D helical inductors; LC resonators; chip size reduction; low-voltage VCO; varactors; voltage controlled oscillator; CMOS technology; Frequency measurement; Inductance; Inductors; Noise measurement; Phase measurement; Power measurement; Varactors; Voltage; Voltage-controlled oscillators; 3D helical inductor; CMOS; Phase noise; VCO;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2006. APCCAS 2006. IEEE Asia Pacific Conference on

Conference_Location

Singapore

Print_ISBN

1-4244-0387-1

Type

conf

DOI

10.1109/APCCAS.2006.342522

Filename

4145445