Researchers have developed a compact, dual-band multiple-input multiple-output (MIMO) antenna specifically designed for intraoral tongue drive system applications. This meandering line-based antenna operates in the 2.45 GHz and 5.8 GHz frequency bands, which are crucial for short-range wireless communication in implantable or wearable medical devices within the oral cavity. The design aims to overcome size and performance challenges in biological environments, where radiofrequency absorption and interference are significant.

The Tongue Drive System (TDS) allows individuals with severe disabilities to control external devices using tongue movements, offering an intuitive and discreet interface. Integrating an efficient and small antenna is fundamental for the viability of these systems, which require robust and low-latency communication. The proposed antenna uses a two-element configuration with reduced separation, achieving a total size of 20 × 20 mm², making it suitable for intraoral use without causing discomfort.

Antenna performance tests include measuring key parameters such as reflection coefficients (S₁₁ and S₂₂), port isolation (S₂₁), radiation efficiency, and gain. Results show that the antenna maintains good performance in both operating bands, with isolation greater than 15 dB and acceptable radiation efficiency for its application. This advancement represents a significant step towards improving wireless communication in assistive devices for people with reduced mobility, opening new possibilities for controlling wheelchairs, computers, or prosthetics.

Miniaturization and dual-band capability are critical features that differentiate this design from previous solutions. The ability to operate at two distinct frequencies allows for greater flexibility in channel assignment and better resilience against interference. The next step in this research would involve in vivo testing and the integration of the antenna into a complete tongue drive system prototype to validate its operation under real conditions and assess its long-term durability and biocompatibility.