Design of a wideband and low phase noise LC VCO

Author

Xu, Shuai ; Wei He ; Shi, Chunqi ; Runxi Zhang ; Ma, Cong ; Lai, Zongsheng

Author_Institution

Inst. of Microelectron. Circuit & Syst., East China Normal Univ., Shanghai, China

fYear

2010

Firstpage

650

Lastpage

652

Abstract

In this paper, a 3.18~4.258GHz wideband and low phase noise LC VCO is proposed. Three binary-weighted switching capacitors are exploited to expand the bandwidth; On-chip LDO is utilized to suppress noise from power supply. Symmetrical noise filtering technique is used to suppress thermal noise from tail current and parasitic resistors of bonding wires. The circuit is implemented with 0.13μm RF CMOS process. The frequency tuning range is from 3.18GHz to 4.258GHz and phase noise is -120dBc/Hz at IMHz offset from 4.258GHz carrier. The Figure of Merit (FOM) is -181dB/Hz and maximum power consumption is 12.5mW.

Keywords

CMOS integrated circuits; filtering theory; microwave integrated circuits; microwave oscillators; voltage-controlled oscillators; RF CMOS process; binary-weighted switching capacitors; bonding wires; figure of merit; frequency 1 MHz; frequency 3.18 GHz to 4.258 GHz; low phase noise LC VCO; on-chip LDO; parasitic resistors; power 12.5 mW; size 0.13 mum; symmetrical noise filtering technique; tail current; thermal noise suppression; wideband voltage controlled oscillators;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State and Integrated Circuit Technology (ICSICT), 2010 10th IEEE International Conference on

Conference_Location

Shanghai

Print_ISBN

978-1-4244-5797-7

Type

conf

DOI

10.1109/ICSICT.2010.5667296

Filename

5667296