A 1.5-V 3~10-GHz 0.18-μm CMOS frequency synthesizer for MB-OFDM UWB applications
暂无分享,去创建一个
An Ultra wide band (UWB) frequency synthesizer is designed and fabricated in 0.18-μm CMOS technology to generate all the carrier frequencies for 13 bands distributed from 3 to 10 GHz. It is composed of one phase-locked loop (PLL) and three single-side band (SSB) mixers. The polyphase filter is used to generate all needed quadrature signals in the circuit and band selectors are to select the frequency band. The sideband rejection can be over 30dB. The switching time between bands is around 3.75ns. The current consumption is 72mA under 1.5-V power supply.
[1] Byoung Gun Choi,et al. A 6.3-9-GHz CMOS fast settling PLL for MB-OFDM UWB applications , 2005, IEEE Journal of Solid-State Circuits.
[2] Gin-Kou Ma,et al. A 14-band Frequency Synthesizer for MB-OFDM UWB Application , 2006, 2006 IEEE International Solid State Circuits Conference - Digest of Technical Papers.