Development of RFID Antenna for Detection of Urination

Hiromasa NAKAJIMA; Masaharu TAKAHASHI; Kazuyuki SAITO; Koichi ITO

doi:10.1587/transcom.E96.B.2244

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Development of RFID Antenna for Detection of Urination

Hiromasa NAKAJIMA, Masaharu TAKAHASHI, Kazuyuki SAITO, Koichi ITO

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Keywords: biological tissue-equivalent solid phantom, paper diaper, radio frequency identification (RFID), urination, finite-difference time-domain (FDTD) method

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2013 Volume E96.B Issue 9 Pages 2244-2250

DOI https://doi.org/10.1587/transcom.E96.B.2244

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Abstract

This paper introduces a radio frequency identification (RFID) tag for urination detection. The proposed tag is embedded into paper diapers in order to detect the patient's urination immediately. For this tag, we designed an RFID tag antenna at 950MHz, which matches the impedance of the associated integrated circuit (IC) chip. In addition, we calculate the antenna characteristics and measure the reflection coefficient (S₁₁) and radiation pattern of the antenna. The results show that this system can be used to detect urination.

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