Target loop antenna prototype with magnetic field reduction method

Claude Daniel Assamoi, Yelakan Berenger Ouattara, Bi Tra Jean Claude Youan, N'tcho Assoukpou Jean Gnamele, Vafi Doumbia

Abstract


This paper proposes a new large loop antenna with a reduced magnetic field for a near field communication (NFC) target used in a metallic environment. It also defines a fairly clear method for controlling and, more specifically, reducing the magnetic field associated with loop antennas. This antenna consists of a circular winding, inside which we insert a square winding arranged in the shape of a diamond. The particular structure of this antenna shows that it is possible to dissociate the increase in the induced magnetic field, linked to its large size, from the increase in the number of windings. This is made possible by the application of the physical principle of overlapping magnetic fields, which results in partially destructive interference.

Keywords


Destructive interference; Loop antenna; Magnetic field; Near field communication; Target

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DOI: http://doi.org/10.11591/ijece.v14i5.pp5274-5284

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International Journal of Electrical and Computer Engineering (IJECE)
p-ISSN 2088-8708, e-ISSN 2722-2578

This journal is published by the Institute of Advanced Engineering and Science (IAES) in collaboration with Intelektual Pustaka Media Utama (IPMU).