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Design of a RF matching network based on a new tunable inductor concept

✍ Scribed by Mouna El Bakkali; Francis Chan Wai Po; Emeric de Foucauld; Bernard Viala; Jean-Philippe Michel

Publisher: Elsevier Science
Year: 2011
Tongue: English
Weight: 736 KB
Volume: 42
Category: Article
ISSN: 0026-2692
DOI: 10.1016/j.mejo.2010.08.004

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✦ Synopsis

We present in this paper a new technique of matching impedances. It consists in replacing a fixed inductor in a matching network by a variable one, and its value is able to change with the load impedance. In the study, the fixed inductance considered is a CMOS integrated one, while the tunable inductance is based on a new Piezomagnetic MEMS concept. A theoretical model of such a tunable inductor is first presented, and then inserted in a matching network in two different ways: inductance value varies either discretely or continuously. The obtained matching networks are compared with a fixed inductor matching network, and simulation results are presented and discussed to validate the presented method and to evaluate the matching efficiency of each matching network.

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