Abstract
A novel implantable antenna, which is compact and insensitive to the implant locations in the human body, is proposed for wireless biotelemetry in the medical device radio communications (MedRadio) service frequency band (401–406 MHz). By adopting a magneto-dielectric material as an antenna substrate, the proposed antenna can be minimized and the bandwidth of the antenna is expected to be widened enough to perform in the various implant locations within the MedRadio band. The potential of the proposed antenna aimed at biotelemetry applications was verified through simulations and measurements with a 2/3 human muscle-emulating block. The designed antenna is 20 mm × 10 mm × 1.275 mm in volume and shows the bandwidth (return loss of 10 dB) of 22.65 MHz and the maximum gain of −32 dBi at 402 MHz, which are quite competitive for the wireless biotelemetry applications.
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