A Simple and Effective Planar Near-Field Measurement Method With Sparse Nonuniform Sampling

被引：0

作者：

Chen, Yinglong ^{[1
]}

Liu, Xiaobo ^{[1
]}

Zheng, Junhao ^{[1
]}

Chen, Xiaoming ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, Sch Informat & Commun Engn, Xian 710049, Peoples R China

来源：

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2024年 / 23卷 / 11期

基金：

中国国家自然科学基金;

关键词：

Sampling methods; Antenna measurements; Antenna radiation patterns; Interpolation; Surface treatment; Position measurement; Surface reconstruction; Antenna under the test (AUT); half-wavelength uniform sampling method; linear interpolation; nonuniform sampling method; planar near-to-far field transformation (NFT); PATTERN RECONSTRUCTION; ANTENNA; TRANSFORMATION; REPRESENTATION; INTERPOLATION;

D O I：

10.1109/LAWP.2024.3437431

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This letter presents a sparse nonuniform sampling method for a planar near-field measurement system. First, the Igloo spherical sampling points are mapped into the near-field planar sampling points, which determine the positions and quantity of nonuniform sampling points. Then, the sparse nonuniform sampling points can accurately recover the near-field distribution through linear interpolation. Finally, the fast Fourier transform-based near-to-far-field transformation is applied to derive the far-field radiation pattern of the antenna under the test. Simulations and measurements demonstrate that the near-field and far-field results agree well with those obtained through the existing half-wavelength uniform sampling method. Thus, the presented method can significantly reduce the sampling points without sacrificing the measurement accuracy.

引用

页码：3947 / 3951

页数：5

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