A Compact Inverted C Patch On-body Antenna for Biomedical Applications

This paper proposes the design of a compact inverted C patch on-body antenna for biomedical applications. The antenna structure consists of an inverted C patch on the top of the FR4 substrate, integrated with the radiation rectangular patch at the bottom by using a shorted pin. The ground plane is also at the bottom of the FR4 substrate, separated by a gap. The proposed antenna is considered on the human skin in the environment of on-body communications. From simulated results, the antenna has |
$S_{11}$
| less than -10 dB covered the frequency range of 2.36-2.58 GHz, uni-directional radiation pattern, and -4.5 dBi of gain at 2.45 GHz. It is found that the lossy human skin affects antenna characteristics by reducing its gain and efficiency. Moreover, the proposed antenna is appropriate for on-body communication systems.