Implementation of Low Phase Noise Wide-Band VCO with Digital Switching Capacitors

Author

Hsu, Meng-Ting ; Chen, Shiao-Hui ; Li, Wei-Jhih

Author_Institution

Nat. Yunlin Univ. of Sci. & Technol., Yunlin

fYear

2007

fDate

11-14 Dec. 2007

Firstpage

1

Lastpage

4

Abstract

This paper presents a low phase noise of the complementary cross-coupled voltage-controlled oscillator, which oscillates at a range of 3.64 ~ 5.37 GHz. This VCO utilizes switching capacitor modules in which eight channels are able to be selected. Moreover, MOS varactors are used as fine tuning. The fully integrated VCO provides excellent performance. The bandwidth of frequency is 1.73 GHz and the tuning range is 38%. The power dissipation of the core circuit is 13.7 mW under 1.8 V supply and phase noises all are smaller than -122 dBc/Hz at 1 MHz offset. This VCO was made by TSMC 0.18 mum 1P6M CMOS standard process and the chip area is 0.96 times 0.83 (mm²).

Keywords

CMOS integrated circuits; phase noise; varactors; voltage-controlled oscillators; CMOS standard process; MOS varactors; bandwidth 1.73 GHz; cross-coupled voltage-controlled oscillator; digital switching capacitors; frequency 3.64 GHz to 5.37 GHz; low phase noise wide-band VCO; Bandwidth; Circuit optimization; Frequency; MOS capacitors; Phase noise; Power dissipation; Tuning; Varactors; Voltage-controlled oscillators; Wideband; CMOS VCO; phase noise; switching capacitor modules; tuning range;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2007. APMC 2007. Asia-Pacific

Conference_Location

Bangkok

Print_ISBN

978-1-4244-0748-4

Electronic_ISBN

978-1-4244-0749-1

Type

conf

DOI

10.1109/APMC.2007.4555040

Filename

4555040