Title :
A wide-band PLL-based frequency synthesizer with adaptive dynamics
Author :
Wu, Ping-Heng ; Yang, Ching-Yuan ; Chao, So-Yu
Author_Institution :
Nat. Chung-Hsing Univ., Taichung
fDate :
Oct. 30 2007-Nov. 2 2007
Abstract :
A wide tuning-range PLL-based frequency synthesizer with constant damping factor (zeta) and natural frequency (omegan) has been presented in this paper. This synthesizer can be use for UHF and VHF channels. The lock frequency range of the synthesizer can vary from several tens MHz to 1.5 GHz with a 6-MHz channel, and the divide ratio of the frequency divider operates from 5 to 300 precisely. The synthesizer was simulated in 0.18-mum CMOS process with 6-MHz reference frequency and 350~500-KHz tunable bandwidth, under a 1.8-V supply voltage.
Keywords :
CMOS integrated circuits; frequency synthesizers; phase locked loops; CMOS process; UHF channels; VHF channels; adaptive dynamics; bandwidth 350 kHz to 500 kHz; constant damping factor; frequency 1.5 GHz; frequency 6 MHz; size 0.18 mum; voltage 1.8 V; wide-band PLL-based frequency synthesizer; Charge pumps; Damping; Delay; Frequency conversion; Frequency synthesizers; Phase locked loops; Ring oscillators; Tuning; Video recording; Wideband;
Conference_Titel :
TENCON 2007 - 2007 IEEE Region 10 Conference
Conference_Location :
Taipei
Print_ISBN :
978-1-4244-1272-3
Electronic_ISBN :
978-1-4244-1272-3
DOI :
10.1109/TENCON.2007.4429019
