Summary
International Technical Conference on Circuits/Systems, Computers and Communications
2008
Session Number:P1
Session:
Number:P1-14
A Frequency Synthesizer with Passive Mixer and LC-Tuned BPF for UWB Applications
Tae-won Ahn, Je-cheol Moon, Yong-woo Kim, Yong Moon,
pp.-
Publication Date:2008/7/7
Online ISSN:2188-5079
Summary:
A fast-hopping frequency synthesizer that reduces complexity and power consumption is presented for MB-OFDM UWB applications. The proposed architecture uses 3960 MHz LC VCO, 528 MHz ring oscillator, passive mixer and LC-tuned Q-enhancement BPF to generate Band Group 1 frequencies. The adjacent channel rejection ratio is less than -40 dBc for 3432 MHz and -44 dBc for 4488 MHz. A fast switching SCL-type MUX is used to produce the required channel output signal and it takes less than 2.2 ns for band switching. The total power consumption is 47.9 mW from a 1.8-V supply.