An vector automatic matching system designed for wireless medical telemetry

A novel adaptive antenna impedance matching system based on vector detection method for medical telemetry is proposed. The system controls a pi matching network tunable components by detecting the antenna complex impedance. The antenna complex impedance is extracted in order to set the proper state...

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Bibliographic Details
Published in2008 Joint 6th International IEEE Northeast Workshop on Circuits and Systems and TAISA Conference pp. 89 - 92
Main Authors Chan Wai Po, F., De Foucauld, E., Delavaud, C., Ciais, P., Kerherve, E.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.06.2008
Subjects
Antennas
Atmospheric modeling
Impedance
Inductance
Q factor
Radio frequency
Tuning
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Summary:A novel adaptive antenna impedance matching system based on vector detection method for medical telemetry is proposed. The system controls a pi matching network tunable components by detecting the antenna complex impedance. The antenna complex impedance is extracted in order to set the proper state configuration of the tunable matching network with basic calculation. Only 10 mus tuning time is required and 30 dB improvement of return loss is obtained. The emitterpsilas power and the receiverpsilas sensitivity can be optimized whatever the perturbations on the wireless link. The whole system has been simulated on a 2.4 GHz ISM emitter.
ISBN:9781424423316
1424423317
DOI:10.1109/NEWCAS.2008.4606328