An vector automatic matching system designed for wireless medical telemetry

Author

Po, F.C.W. ; De Foucauld, Emeric ; Delavaud, C. ; Ciais, P. ; Kerherve, Eric

Author_Institution

CEA-LETI, Grenoble

fYear

2008

fDate

22-25 June 2008

Firstpage

89

Lastpage

92

Abstract

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.

Keywords

adaptive antenna arrays; biomedical telemetry; impedance matching; radiotelemetry; ISM emitter; adaptive antenna impedance matching system; antenna complex impedance; frequency 2.4 GHz; tunable matching network; vector automatic matching system; vector detection method; wireless medical telemetry; Antenna accessories; Biological system modeling; Circuit simulation; Humans; Impedance; Muscles; Pacemakers; Telemetry; Tunable circuits and devices; Wireless sensor networks;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems and TAISA Conference, 2008. NEWCAS-TAISA 2008. 2008 Joint 6th International IEEE Northeast Workshop on

Conference_Location

Montreal, QC

Print_ISBN

978-1-4244-2331-6

Electronic_ISBN

978-1-4244-2332-3

Type

conf

DOI

10.1109/NEWCAS.2008.4606328

Filename

4606328