A Simple Monopole ISM Band Antenna for On-body Wireless Communication in the Milimetre-Wave range

The notion of a compressed size wearable flexible antenna for off-body links for wireless body area network (WBAN) applications is presented in this study. This proposed antenna resonates at 24.125GHz in the industrial, scientific and medical (ISM) band. The proposed antenna is a monopole antenna mounted on a Roger substrate with a modified ground that compresses the antenna profile. The ISM band was chosen because of its flexibility in terms of large bandwidth and modest antenna size. This antenna's key feature is its tiny size and flexibility, which makes it ideal for off-body transmission. The Rogers RO3010 is utilized as a substrate with dimensions of (8×6×0.12) mm
³
and a loss tangent of 0.0022. When an antenna is placed near a human body, its performance, such as S11 and bandwidth, is reduced, and the results show that the compressed size antenna has a negligible influence when compared to rectangular antennas. This antenna has been shrunk and built for use in off-body communications. Furthermore, we will aim to improve the proposed antenna's gain and bandwidth, as well as the return loss when it is near a real phantom.