An Novel Ultra-Wideband Plane Wave Generator Antenna Array for OTA Test

This paper presents an ultra-wideband one-dimension plane wave generator (PWG) antenna array. Ten electrical small wideband Vivaldi antenna elements are employed. Both the coupling and environment effect are involved in the proposed plane wave excitations optimization method. The theoretical bandwidth covers over 0.7GHz to 7GHz. The PWG generates plane wave whose amplitude variation is below ±1.45dB and phase variation is below ±10.5° in work frequency band by proposed method, which is better than the traditional optimization method results.