Abstract

This letter presents the design of a dual-band circular implantable antenna for biomedical applications. The proposed antenna operates at the Medical Implant Communication Services band (402–405 MHz) and Industrial, Scientific, and Medical band (2400–2483.5 MHz). The antenna occupies an area of π × 102 × 2.54 mm3 (797.96 mm3). The dual-band is realized in a circular patch by deploying via holes, open-ended slots in the ground plane, and a superstrate. The prototype antenna is fabricated and measured using tissue-equivalent liquid model and pork meat to verify the suitability design. The proposed antenna has a peak gain of –33.1 and –14.55 dBi at 400 MHz and 2.45 GHz, respectively. The specific absorption rate is 241.5 W/kg for 1 g of tissue with a maximum input power of 6.625 mW. Furthermore, the proposed antenna's salient features are compared with the state-of-the-art implantable antennas.

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