A 3–10 GHz flexible CMOS LO generator for MB-OFDM UWB application using wide tunable VCOs

Author

Park, Eun-Chul ; Ryu, Inhyo ; Koh, Jeongwook ; Suh, Chun-Deok

Author_Institution

Syst. LSI Div., Samsung Electron. Co., Yongin

fYear

2008

fDate

15-19 Sept. 2008

Firstpage

338

Lastpage

341

Abstract

A frequency synthesizer for MB-OFDM UWB system is implemented in CMOS RF process. The LO generator includes three wide tunable VCOs, PLLs, and quadrature generators. This synthesizer with three VCOs gives more flexible power management scheme and generates lower spurious tones than single side-band mixing method. This scheme supports all band groups except band group 2 which wireless LAN application occupies. Local oscillator including PLLs consumes 17.8 ~ 45.7 mA according to TFC code from 1.2 V power supply. Phase noise has been measured less than -100 dBc/Hz over the operating frequency range.

Keywords

CMOS integrated circuits; OFDM modulation; circuit tuning; field effect MMIC; flexible electronics; frequency synthesizers; ultra wideband communication; voltage-controlled oscillators; MB-OFDM UWB application; PLL; RF process; TFC code; flexible CMOS LO generator; frequency 3 GHz to 10 GHz; frequency synthesizer; power management scheme; wide tunable VCO; CMOS process; Energy management; Frequency synthesizers; Local oscillators; Phase noise; Power generation; Power supplies; Power system management; Radio frequency; Wireless LAN;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State Circuits Conference, 2008. ESSCIRC 2008. 34th European

Conference_Location

Edinburgh

ISSN

1930-8833

Print_ISBN

978-1-4244-2361-3

Electronic_ISBN

1930-8833

Type

conf

DOI

10.1109/ESSCIRC.2008.4681861

Filename

4681861