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A 14-band MB-OFDM UWB CMOS LO Generator  

Seo, Yong-Ho (Department of Electronics Engineering, Dong-A University)
Shin, Sang-Woon (Department of Electronics Engineering, Dong-A University)
Kim, Chang-Wan (Department of Electronics Engineering, Dong-A University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SD / v.47, no.11, 2010 , pp. 65-71 More about this Journal
Abstract
This paper presents a 14-band LO generator architecture for MB-OFDM UWB systems using 3.1 GHz~10.6 GHz frequency band. The proposed LO generator architecture has been consisted of only one PLL and the fewest nonlinear components to generate 14 LO signals with high purity while consuming low dc power consumption. In addition, major spurious generated from the LO generator have been located in the out of UWB band. The proposed LO generator has been implemented in a $0.13-{\mu}m$ CMOS technology and consumes a dc power consumption of 93~103 mW from a 1.5 V supply. The simulation results show an in-band spurious suppression ratio of more than 41 dBc and a band-switching time of below 3 nsec.
Keywords
CMOS; LO generator; RFIC; single-sideband(SSB) mixer; ultra-wideband(UWB);
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