University of Hertfordshire

Adaptive impedance matching and antenna tuning for green software-defined and cognitive radio

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Original languageEnglish
Title of host publicationMidwest Symposium on Circuits and Systems
PublisherIEEE
Pages1-4
Number of pages4
Volume12269556
Edition1st
ISBN (Electronic)978-1-61284-855-6
ISBN (Print)978-1-61284-856-3
DOIs
Publication statusPublished - 1 Jan 2011
Event2011 IEEE 54th International Midwest Symposium on Circuits and Systems (MWSCAS) - Korea, China
Duration: 7 Aug 201110 Aug 2011

Conference

Conference2011 IEEE 54th International Midwest Symposium on Circuits and Systems (MWSCAS)
CountryChina
CityKorea
Period7/08/1110/08/11

Abstract

Impedance matching between the power amplifier and antenna is crucial for efficient power transfer in a green transmitter. A single antenna with a software-configurable tuning unit can serve the functions of multiple antennas which are otherwise required by multistandard wireless communications. Impedance matching and tuning must be adaptive and in real time for fast varying frequencies and surroundings of mobile communications. Small size and low power consumption must also be met in such tuning systems for mobile phones and terminals. This paper overviews automatic antenna tuning for modern and future generation mobile communications. Recent advances in impedance monitoring methods, fast tuning algorithms and programmable matching systems are discussed. Latest effort in integrating automatic impedance tuning systems on a silicon chip is also introduced.

Notes

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