A Broadband Reference Antenna for Efficiency Measurements in a Reverberation Chamber

A broadband reference antenna is proposed for antenna efficiency measurements in a reverberation chamber. The proposed antenna consists of two elliptical shaped dipole arms with elliptical slots etched on opposite sides of a thin FR4 substrate and fed by an exponential tapered microstrip balun. Measurements have been conducted to verify the antenna performance. The results show that this design shows acceptable radiation efficiency from 200 MHz to 6 GHz.