US 11,876,302 B2
Phase compensation method and apparatus for measuring array antenna
RuoPeng Liu, Nanshan District Shenzhen (CN); Zhiya Zhao, Nanshan District Shenzhen (CN); Hua Tian, Nanshan District Shenzhen (CN); and Jie Yao, Nanshan District Shenzhen (CN)
Assigned to KUANG-CHI INSTITUTE OF ADVANCED TECHNOLOGY, Guangdong (CN)
Filed by KUANG-CHI INSTITUTE OF ADVANCED TECHNOLOGY, Nanshan District Shenzhen (CN)
Filed on Nov. 9, 2020, as Appl. No. 17/093,083.
Application 17/093,083 is a continuation of application No. PCT/CN2018/124558, filed on Dec. 28, 2018.
Claims priority of application No. 201810432530.1 (CN), filed on May 8, 2018.
Prior Publication US 2021/0057816 A1, Feb. 25, 2021
Int. Cl. H01Q 3/38 (2006.01); H01Q 3/40 (2006.01); G01R 29/08 (2006.01); H01Q 3/26 (2006.01)
CPC H01Q 3/38 (2013.01) [G01R 29/0871 (2013.01); H01Q 3/267 (2013.01); H01Q 3/40 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A phase compensation method for measuring an array antenna, wherein the array antenna comprises a first array unit and a second array unit, and the phase compensation method comprises following operations performed by a phase compensation apparatus:
an operation S1 of controlling to measure the first array unit and the second array unit, which are placed on a rotary table, so as to obtain measured far-field directivity patterns of the first array unit and the second array unit, and establishing a coordinate system based on the far-field directivity patterns, so as to determine a spatial geometrical relationship between the first array unit and the second array unit;
an operation S2 of determining a wave path difference between the first array unit and the second array unit based on the spatial geometrical relationship between the first array unit and the second array unit; and
an operation S3 of performing phase compensation on the second array unit based on the wave path difference, so as to compensate a beam directivity deviation introduced to the measured far-field directivity patterns when at least one of the first array unit and the second array unit deflects from a rotation center of the rotary table.