A 2.4/5 GHz Dual-Band VCO using a Variable Inductor and Switched Resonator

Author

Kao, H.L. ; Yang, D.Y. ; Chin, Albert ; McAlister, S.P.

Author_Institution

Chang Gung Univ., Tao-Yuan

fYear

2007

fDate

3-8 June 2007

Firstpage

1533

Lastpage

1536

Abstract

A dual-band, low phase noise, low power and small sized voltage-controlled oscillator (VCO) with a variable inductor and switched resonator is described. The dual-band VCO operated near 2.4 GHz and 5 GHz with a phase noise of -120 and -121 dBc/Hz at a 1 MHz offset and a tuning range of 250 MHz and 1.2 GHz, respectively. The power consumption was 1.5/1.8 mW for 2.4/5 GHz operations. The total size the VCO was only 1.06 mm², which was achieved by using one inductor which was connected with a switch to give good dual-band operation and performance.

Keywords

inductors; phase noise; resonators; voltage-controlled oscillators; dual-band VCO; frequency 2.4 GHz; frequency 5 GHz; phase noise; power 1.5 mW; power 1.8 mW; switched resonator; variable inductor; voltage-controlled oscillator; CMOS technology; Circuit optimization; Dual band; Frequency; Inductance; Inductors; Parasitic capacitance; Phase noise; Switching circuits; Voltage-controlled oscillators; Dual band; VCO; phase noise; switched inductors; switched resonators;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium, 2007. IEEE/MTT-S International

Conference_Location

Honolulu, HI

ISSN

0149-645X

Print_ISBN

1-4244-0688-9

Electronic_ISBN

0149-645X

Type

conf

DOI

10.1109/MWSYM.2007.380565

Filename

4264134