Spatial Deconvolution Method Based on Power-Only Measured Data for Antenna Pattern Reconstruction in Nonanechoic Chamber

Anechoic environment with a clean far-field line-ofsight (LOS) path is required for the accurate antenna radiation pattern measurement. However, such propagation environment might be too demanding in practice. Therefore, there is a strong need for effective echo suppression methods to recover the true antenna pattern in non-anechoic environment. In this paper, a recent proposed amplitude-only echo suppression method is discussed for antenna measurement in the non-anechoic environment. Compared to the conventional complex-signal-based methods, the power-only spatial deconvolution method only requires phaseless data. Furthermore, this method can either exploit spatial scalar response at a single-frequency or wideband scalar response at a single spatial location, or joint spatial wideband scalar response. It is a phaseless antenna pattern reconstruction method, and it presents excellent multipath identification capability and enables high measurement efficiency. The feasibility and advantages of the power-only spatial deconvolution method are comprehensively demonstrated by the numerical and experimental validations.