Researchers have developed a fully textile, two-port Multiple-Input Multiple-Output (MIMO) antenna designed for ultra-wideband (UWB) wireless body area networks (WBANs). This new antenna is characterized by its high gain and a low specific absorption rate (SAR), making it suitable for on-body applications. The design incorporates an "Artificial Magnetic Conductor" (AMC) structure to enhance its performance.

The proposed antenna operates in the UWB frequency range, from 3.1 GHz to 10.6 GHz, a crucial spectrum for high-speed data transmission over short distances. The integration of the AMC structure is fundamental to mitigate the effects of interaction with the human body, such as frequency detuning and efficiency reduction, by providing a virtual ground plane that isolates the antenna from biological tissue. This allows for maintaining high gain and directional radiation, even when the antenna is in direct contact with the skin.

The textile aspect of the antenna not only makes it flexible and comfortable for the user but also facilitates its integration into clothing, opening the door to a new generation of wearable devices for health monitoring, communication, and entertainment. Low SAR is a critical requirement for any electronic device operating near the body, ensuring that exposure to electromagnetic radiation remains within safe limits. This advance represents a significant step towards the development of more efficient, safe, and comfortable WBANs, with implications for medicine, sports, and human-machine interaction.