Miniaturized MIMO Antenna Designed for Biomedical Telemetry System

This research presents an ultra-miniaturized MIMO antenna system tailored for efficient operation within the 2.45 GHz of the industrial, scientific, and medical (ISM) band, specifically addressing the requirements of biomedical implants. The proposed MIMO antenna showcases exceptional compactness, occupying a small volume of 2.65 mm³ (i.e., 4.9 mm × 4.5 mm × 0.12 mm). This compact design is achieved through the strategic utilization of meandered resonators. Despite its highly miniaturized form and slotted ground ensuring high isolation between ports, the antenna system attains a good peak gain of -26.8 dB at 2.45 GHz. This achievement is particularly noteworthy, highlighting the antenna's suitability for biomedical telemetry systems. Additionally, the antenna exhibits omnidirectional radiation patterns. This characteristic ensures consistent and reliable signal coverage in diverse orientations, meeting the specific needs of the targeted application. The emphasis on ultra-miniaturization underscores the practicality of this antenna system and its potential applications in biomedical devices.