Wearable multi-band antenna with tuning function for on-body and off-body communications

摘要: In the last few years, research on body-centric wireless communications (BCWCs) is becoming very hot, because of numerous applications, such as, E-health systems, security agencies, and personal entertainment [1–2]. Especially, many researchers considered systems as biggest potential application with all kinds devices. The well-known requirements for wearable antennas in area are compact size, light weight, low-profile, lower specific absorption rate (SAR). Planar inverted-F [3–4] good candidates BCWCs, radiation toward human body reduced by using large ground plane. However, their volume still larger than our proposed antenna.