INVESTIGATION OF ULTRA-WIDEBAND TRANSIENT ELECTROMAGNETIC FIELD MEASUREMENT
A detector was developed for measuring ultra-wideband (UWB) transient electromagnetic field in the free-space. It is a small TEM horn antenna with gradually changed impedance. The majorpart of this paper is to describe the method of calibrating the detector's sensitivity. Results show that in therange of 50MHz~2. 2GHz, the detector's sensitivity is with linear phase and a uniform magnitude within20%. The error of calibrating is less than 12%.