Reference-Signal-Based Planar Phaseless Measurement Technique
Jianjiang Liu, Licheng Yang, Tao Hong, Wen Ting Jiang, Kun Wei · 2025
This paper addresses the challenge of inaccessible phase information in radiation characteristics measurement of integrated wireless devices by proposing a single-scan-plane phaseless antenna characterization method. Existing dual-scanplane phaseless measurement techniques suffer from prolonged measurement durations, high computational complexity, and susceptibility to local minima. To resolve these limitations, the proposed method introduces an auxiliary reference antenna as a phase benchmark. By performing frequency-domain analysis on the measured power spectrum through Fourier transform and integrating a relative phase reconstruction technique between spatial sampling points, this method achieves simultaneous acquisition of electric field amplitude and phase information during a single scanning process. Additionally, the placement optimization of the auxiliary reference antenna is systematically investigated. Experimental results demonstrate the potential of this technique in active integrated antenna measurement systems while revealing critical limitations requiring further optimization, such as undesired reflections caused by interactions between the probe and reference antenna, as well as external environmental interference.