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High-performance magnetoinductive directional filters

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Title: High-performance magnetoinductive directional filters
Authors: Voronov, A
Syms, RRA
Sydoruk, O
Item Type: Journal Article
Abstract: Multiport magnetoinductive (MI) devices with directional filter properties are presented. Design equations are developed and solved using wave analysis and dispersion theory, and it is shown that high-performance directional filters can be realised for use both in MI systems with complex, frequency-dependent impedance and in conventional systems with real impedance. Wave analysis is used to reduce the complexity of circuit equations. High-performance MI structures combining directional and infinite rejection filtering are demonstrated, as well as multiple-passband high-rejection filtering. A new method for improving filtering performance through multipath loss compensation is described. Methods for constructing tuneable devices using toroidal ferrite-cored transformers are proposed and demonstrated, and experimental results for tuneable MI directional filters are shown to agree with theoretical models. Limitations are explored, and power handling sufficient for HF RFID applications is demonstrated, despite the use of ferrite materials.
Issue Date: 8-Mar-2022
Date of Acceptance: 4-Mar-2022
URI: http://hdl.handle.net/10044/1/96164
DOI: 10.3390/electronics11060845
ISSN: 1450-5843
Publisher: University of Banja Luka
Start Page: 1
End Page: 16
Journal / Book Title: Electronics
Volume: 11
Issue: 6
Copyright Statement: © 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Keywords: 0906 Electrical and Electronic Engineering
Publication Status: Published
Open Access location: https://doi.org/10.3390/electronics11060845
Online Publication Date: 2022-03-08
Appears in Collections:Electrical and Electronic Engineering

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