A Dual-Band Microstrip Patch Antenna for Brain-Machine Interface Applications

In this paper, a novel dual-band printed monopole antenna (PMA) is studied for Brain-Machine Interface (BMI) applications. The PMA has a square radiating patch with one L-shaped sleet and two L-shaped slots, and two more L-shaped slots on its ground plane. The antenna works at two different frequency range: WLAN/UWB (23-2.5 GHz and 4.1-11.5 GHz). The WLAN resonance is obtained via L-shaped sleet inserted on the patch's side, by which the resonance frequency can be altered via its length. The bandwidth of the antenna patch is further improved via the addition of double L-shaped slots on the patch and ground plane. Furthermore, the antenna characteristics inside the brain phantom have been studied for the BMI purpose. The proposed antenna has a stable gain over the radiating frequency and transmitted power between 1.1-4.6 mW inside the brain phantom. Far-Field and Near-Field of the antenna have been analyzed for BMI purposes. The designed antenna with a small size of 15x20x1.6mm is suitable for BMI applications, not only with the aim of lower power consumption but also for the purpose of implanting.