Title :
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
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;
Conference_Titel :
Asian Solid-State Circuits Conference, 2005
Conference_Location :
Hsinchu
Print_ISBN :
0-7803-9163-2
Electronic_ISBN :
0-7803-9163-2
DOI :
10.1109/ASSCC.2005.251699
