Detail výsledku
Hybrid dual-mode frequency synthesis for cognitive multi-radio front-ends
Baudoin Genevieve
Villegas Martine
Maršálek Roman, prof. Ing., Ph.D., UREL (FEKT)
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-N and integer-N 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.
Frequency synthesis, phase locked loop, cognitive radio
@article{BUT74691,
author="Václav {Valenta} and Genevieve {Baudoin} and Martine {Villegas} and Roman {Maršálek}",
title="Hybrid dual-mode frequency synthesis for cognitive multi-radio front-ends",
journal="WIRELESS PERSONAL COMMUNICATIONS",
year="2012",
volume="2012 (64)",
number="1",
pages="197--210",
issn="0929-6212"
}