Detection of paper sheets based on variation of antenna resonance characteristics

Kenjiro KUBO; Kazuki SHINTANI; Hisato IWAI; Shinsuke IBI; Takuya KURIHARA; Satoru SHIMIZU; Yoshinori SUZUKI

doi:10.1587/comex.2021SPL0006

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

Detection of paper sheets based on variation of antenna resonance characteristics

Kenjiro KUBO, Kazuki SHINTANI, Hisato IWAI, Shinsuke IBI, Takuya KURIHARA, Satoru SHIMIZU, Yoshinori SUZUKI

Author information

Keywords: Proximity sensor, Antenna, Paper detection, Return loss

JOURNAL FREE ACCESS Advance online publication

Article ID: 2021SPL0006

DOI https://doi.org/10.1587/comex.2021SPL0006

The final version of this article is now available: Vol. 10 (2021), No. 9 pp. 625-628

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Abstract

This paper discusses the detection of the presence of paper inserted between the metal and the antenna. In order to clarify the feasibility of the sensing technique, we analyzed change of frequency characteristics of return loss in the presence or absence of paper near the antenna. Numerical analysis using the FDTD method was performed and experiments were carried out to compare the calculated and measured results. By the results, we confirmed detectable amount of change can be observed.

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