25th International Conference on Electromagnetics in Advanced Applications, ICEAA 2024, Lisbon, Portekiz, 2 - 06 Eylül 2024, ss.305-307
In this paper a compact conformai capsule antenna design based on the inverted-F antenna (IFA) is proposed for dual-band biotelemetry applications. The primary radiator of the suggested antenna is composed of a meander-line loaded spiral-type resonator which is used instead of the typical F-structure. To improve impedance matching, the antenna ground plane is modified by introducing a proper ring slot. The overall size of the compact antenna is only 14x29.8x0.125 mm3. According to the numerical results obtained using the CST microwave studio homogeneous model, the encapsulated conformai antenna operates at 402 MHz MICS and 2.45 GHz ISM bands with 18 and 90 MHz bandwidths, respectively.