Fast Measurement of Single-Cut Far-Field Patterns at Quasi-Far-Field Distance for Linear Antenna Array of Any Polarization

Abstract

Corrected method for fast measurement of single-cut Far-Field (FF) pattern at Quasi-Far-Field (QFF) distance for linear antenna array of any polarization by two orthogonal measurements has been proposed in this paper. The analytical equations were deduced based on cylindrical wave expansion (CWE). The required measurement distance of proposed method don’t need to satisfy the FF condition of the antenna under test (AUT), only need to satisfy the FF region of small dimension of the AUT, so it is in the Quasi-Far-Field (QFF) of another large dimension, which makes the process same as FF measurements. Therefore, the introduced method is especially applicable to arbitrary polarized antennas with one dimension large, and another dimension small. 45° linearly polarized and circularly polarized antenna array were simulated to prove the proposed method, the corrected results using the presented algorithm are consistent with the theoretical results.