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

Special Cluster on Antennas and Propagation Technologies in Conjunction with Main Topics of ISAP2020

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

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Keywords: proximity sensor, antenna, paper detection, return loss

JOURNAL FREE ACCESS

2021 Volume 10 Issue 9 Pages 625-628

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

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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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