Transmission Characteristic of Meandered Bowtie Antenna at 2.4 GHz in Proximity to Human Body

Abstract

This paper evaluates the off-body propagation characteristic of flexible meandered bowtie antenna at 2.4 GHz. Propagation measurements have been carried out in anechoic chamber. The effect of human body on $S_{11}$, $S_{21}$ and received power are analysed. The results show that the received signal degrades by more than 20 dBm when the signal propagation is blocked by the body while the $S_{21}$ transmission is reduced for up to 25 dB.