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KMID : 1137820100310010020
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의공학회지
2010 Volume.31 No. 1 p.20 ~ p.26
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Ear Canal Insertable Size Wireless Transceiver for Hearing Aid
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Woo Sang-Hyo
Zia Mohy-Ud-Din
Yoon Young-Ho
Kim Min-Kyu
Lee Jung-Hyun
Kim Myoung-Nam
Cho Jin-Ho
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Abstract
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The aim of this study was to test the feasibility of a wireless transceiver that can be inserted into the ear canal. The wireless technology could minimize the cosmetic problems of patients, and it can be applied to binaural hearing aids for improving speech perception. In order to implement the ear canal insertable transceiver, simple finite-difference time-domain (FDTD) simulations were carried out to determine the feasibility, and the hardware of the transceiver was implemented within the ear shell. The size of the implemented transceiver was only 7×7mm, and it could successfully transmit signals to external devices. In order to measure the radiation pattern, a simple RF phantom was used, and the maximum attenuation from the phantom was observed to be 23 dB when the reference antenna was placed at a distance of 2 m from the transmitter.
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KEYWORD
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Wireless, Hearing aid, Ear canal, 2.4 GHz, RF link
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