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

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

Near-Metal-Insensitive antenna for closed space wireless communications
Yuta NakagawaShingo TanakaTatsuo TobaKenji MatsushitaHisashi Morishita
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JOURNAL FREE ACCESS Advance online publication

Article ID: 2017XBL0117

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Abstract

In order to obtain near-metal-insensitive antenna for closed-space wireless communications, the impedance characteristics of U-shaped folded monopole antenna is investigated in detail. In this Letter, the near-metal-insensitive means antenna VSWRs are hardly influenced by the near object, especially metal. The simulated and measured results show that the proposed higher impedance model has stronger near-metal-insensitiveness than the conventional middle impedance model. The simulated and measured results show that the antenna gains of higher impedance models are 3dB greater at maximum than those of middle impedance models, when metal plane approaches.

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© 2017 The Institute of Electronics, Information and Communication Engineers
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