Magnetic induction communication using toroidal helix coil
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초록
In a wireless communication environment, a metal medium is one of the main causes of increase in the path loss of electro-magnetic (EM) waves. Even well-established EM communication techniques do not perform well because of their high signal attenu-ation. Magnetic induction (MI) is a promising technology in challenging wireless environments, such as metal structures or under-ground. The performance of MI transmitters and receivers is critical for achieving both channel connectivity and energy efficiency. In this study, we propose a toroidal helix coil as an MI antenna and provide EM characteristics by analyzing it using COMSOL. Based on the analysis, a pair of coils with 20 windings were manually fabricated, and MI communication experiments were performed using them. As a result, an average bandwidth of 7 Mbps was obtained by applying the proposed MI coil in a wireless environment with a 5 mm thick metal plate.
Abstract
In a wireless communication environment, a metal medium is one of the main causes of increase in the path loss of electro-magnetic (EM) waves. Even well-established EM communication techniques do not perform well because of their high signal attenu-ation. Magnetic induction (MI) is a promising technology in challenging wireless environments, such as metal structures or under-ground. The performance of MI transmitters and receivers is critical for achieving both channel connectivity and energy efficiency. In this study, we propose a toroidal helix coil as an MI antenna and provide EM characteristics by analyzing it using COMSOL. Based on the analysis, a pair of coils with 20 windings were manually fabricated, and MI communication experiments were performed using them. As a result, an average bandwidth of 7 Mbps was obtained by applying the proposed MI coil in a wireless environment with a 5 mm thick metal plate.
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