Title
Hybrid Dual-Mode Frequency Synthesis for Cognitive Multi-radio Front-Ends
Abstract
This paper investigates a novel approach to reconfigurable frequency synthesis for flexible radio transceivers in future cognitive multi-radios. The frequency range covered by the proposed multi-radio synthesizer corresponds to the frequency bands of the most diffused wireless communication standards operating in the radio band ranging from 800 MHz to 6 GHz. A hybrid phase locked loop (PLL) based frequency synthesizer is proposed here and a novel switching protocol is presented and validated on an experimental evaluation board. The proposed architecture combines fractional and integer PLL modes of operation along with a switched loop filter topology. Compared to standard PLL techniques, the proposed configuration provides great flexibility options and moreover, it offers relatively low circuit complexity and low power consumption. The proposed architecture provides reconfigurability of the loop bandwidth, frequency resolution, phase noise and settling time performance and hence, it can adapt itself to diverse requirements given by the concerned wireless communication standards.
Year
DOI
Venue
2012
10.1007/s11277-012-0526-5
Wireless Personal Communications
Keywords
Field
DocType
Frequency synthesis,Phase locked loop,Cognitive radio
Phase-locked loop,Telecommunications,Reconfigurability,Computer science,PLL multibit,Phase noise,Real-time computing,Electronic engineering,Frequency synthesizer,Direct digital synthesizer,Radio spectrum,Cognitive radio
Journal
Volume
Issue
ISSN
64
1
0929-6212
Citations 
PageRank 
References 
0
0.34
6
Authors
4
Name
Order
Citations
PageRank
Vaclav Valenta1744.95
Geneviève Baudoin213819.08
Martine Villegas3868.77
Roman Maršálek410.77