Title :
A regenerative semi-dynamic frequency divider for mode-1 MB-OFDM UWB hopping carrier generation
Author :
Lin, Chien-chih ; Wang, Chorng-Kuang
Author_Institution :
Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
A semi-dynamic regenerative frequency divider for MB-OFDM UWB hopping carrier generation is presented. With the ratio of 7.5, it provides quadrature symmetric 528 MHz deviation for direct frequency synthesis. Realized in 0.18 μm CMOS, the chip occupies 0.8×0.85 mm2. The synthesizer achieves -20 dBc image suppression while consuming 18 mW from a 1.8 V supply.
Keywords :
CMOS analogue integrated circuits; OFDM modulation; frequency dividers; frequency hop communication; frequency synthesizers; integrated circuit design; microwave integrated circuits; power consumption; ultra wideband communication; 0.18 micron; 0.8 mm; 0.85 mm; 1.8 V; 18 mW; 3.432 to 4.488 GHz; CMOS; UWB hopping carrier generation; direct frequency synthesis; image suppression; multi-band OFDM; multi-band orthogonal frequency division multiplexing; regenerative frequency divider; regenerative semi-dynamic frequency divider; Amplitude modulation; Frequency conversion; Frequency synthesizers; Low pass filters; OFDM; Phase locked loops; Satellites; Signal generators; Signal synthesis; Ultra wideband technology;
Conference_Titel :
Solid-State Circuits Conference, 2005. Digest of Technical Papers. ISSCC. 2005 IEEE International
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-8904-2
DOI :
10.1109/ISSCC.2005.1493941
