IEICE Communications Express
Online ISSN : 2187-0136
ISSN-L : 2187-0136

This article has now been updated. Please use the final version.

A Study on Σ-Δ Directional Antenna Array for EM Energy Harvesting
Nobuyasu Takemura
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Keywords: EM energy harvesting, antenna array, hybrid circuit
JOURNAL FREE ACCESS Advance online publication

Article ID: 2021SPL0005

The final version of this article is now available: Vol. 10 (2021), No. 9 pp. 709-714
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Abstract

A Σ-Δ directional antenna array for electromagnetic (EM) energy harvesting is proposed in this paper. By applying the Σ-Δ directional antenna array with the 180-degree hybrid circuit, it is possible to convert more electric power from the EM wave. The results of the consideration by the indoor environment using the ray tracing method are reported that the received electric power by the Σ-Δ directional antenna array is improved more than the single directivity antenna.

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