US 12,270,846 B2
Measuring system and measuring method of antenna pattern based on near field to far field transformation
Chang-Lun Liao, Taoyuan (TW); You-Hua Lin, Taoyuan (TW); Jiahn-Wei Lin, Taoyuan (TW); Bo-Cheng You, Taoyuan (TW); Chang-Fa Yang, Taoyuan (TW); De-Xian Song, Taoyuan (TW); Wen-Jiao Liao, Taoyuan (TW); Yuan-Chang Hou, Taoyuan (TW); and Tswen-Jiann Huang, Taoyuan (TW)
Assigned to Chunghwa Telecom Co., Ltd., Taoyuan (TW)
Filed by Chunghwa Telecom Co., Ltd., Taoyuan (TW)
Filed on May 23, 2023, as Appl. No. 18/322,580.
Claims priority of application No. 112112054 (TW), filed on Mar. 29, 2023.
Prior Publication US 2024/0329108 A1, Oct. 3, 2024
Int. Cl. G01R 29/08 (2006.01); G01R 29/10 (2006.01)
CPC G01R 29/0814 (2013.01) [G01R 29/105 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A measuring system for an antenna pattern based on near field to far field transformation, adapted to an antenna under test, comprising:
a probe antenna, measuring an electric field radiated by the antenna under test to obtain electric field information;
a reference antenna, measuring the electric field to obtain a reference phase; and
a control system, coupled to the antenna under test, the probe antenna, and the reference antenna, wherein
the control system applies near field focusing to the reference antenna to configure a focus point of the reference antenna on the antenna under test, and
the control system performs the near field to far field transformation according to the electric field information and the reference phase to output far field patterns.