A Fast-Switching Frequency Synthesizer for UWB Applications

Author

Liang, Che-Fu ; Liu, Shen-Iuan

Author_Institution

Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei

fYear

2005

fDate

Nov. 2005

Firstpage

197

Lastpage

200

Abstract

A fast-switching frequency synthesizer is presented for ultra-wideband MB-OFDM applications. This synthesizer generates three frequency tones with 528 MHz spacing. By using single-sideband mixers with Q-enhancement bandpass filters and switched-cascode multiplexers, the sideband rejection is less than -30dB at least and the frequency switching time is less than 7ns. The chip has been fabricated in 0.18mum CMOS process and the area is 1.32mm². It consumed 70mW from a 1.8V supply

Keywords

CMOS integrated circuits; OFDM modulation; UHF integrated circuits; band-pass filters; cascade networks; frequency synthesizers; integrated circuit design; mixers (circuits); multiplexing equipment; switched networks; ultra wideband communication; 0.18 micron; 1.8 V; 528 MHz; 70 mW; CMOS process; bandpass filters; fast-switching frequency synthesizer; single-sideband mixers; switched cascode multiplexers; ultra wideband MB-OFDM; Band pass filters; CMOS technology; Energy consumption; Frequency conversion; Frequency synthesizers; Multiplexing; Phase locked loops; Power generation; Radio frequency; Ultra wideband technology;

fLanguage

English

Publisher

ieee

Conference_Titel

Asian Solid-State Circuits Conference, 2005

Conference_Location

Hsinchu

Print_ISBN

0-7803-9163-2

Electronic_ISBN

0-7803-9163-2

Type

conf

DOI

10.1109/ASSCC.2005.251699

Filename

4017565