One-Antenna Method with Time Domain Gating using Equi-Ripple FIR filter

Abstract

The one-antenna method is adopted to the practical antenna validation needs in EMC laboratories. The proposed setup allows verification of important characteristics like antenna gain and antenna factor on a regular basis. The experiments show very good agreement with manufacturer calibration data. For frequency bands above 1 GHz the metallic wall of a typical shielded room can be used to calibrate e.g. wide band horn antennas. Considerations about potential sources of measurement errors are investigated, while the application of equi-ripple FIR filters – applied during the time domain gating – allows to minimize the uncertainty.