An Approximation of the Range Resolution in the Near-Field of a Distributed Antenna Array

被引：0

作者：

Sakhnini, Adham ^{[1
,2
]}

Wachowiak, Marcin ^{[1
,2
]}

Bourdoux, Andre

Pollin, Sofie ^{[2
]}

机构：

[1] Interuniv Microelect Ctr, Adv RF Dept, B-3001 Leuven, Belgium

[2] Katholieke Univ Leuven, Elect Engn Dept, B-3001 Leuven, Belgium

来源：

IEEE WIRELESS COMMUNICATIONS LETTERS | 2024年 / 13卷 / 12期

关键词：

Antenna arrays; Apertures; Narrowband; Geometry; Decision making; Wavelength measurement; Vectors; Spatial resolution; integrated sensing and communication; near field communication; near-field radiation pattern;

D O I：

10.1109/LWC.2024.3412994

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

This letter presents a simple formula that approximates the range (or depth) resolution of a focused beam in the near-field of a narrowband antenna array. The formula depends only on the wavelength and the span of aspect angles across the array. A second simpler formula is then derived which directly relates the radial resolution with the Fraunhofer distance. This formula suggests that the Fraunhofer distance overestimates the near-field region. In particular, it suggests that the actual near-field, when measured in terms of range resolution, is proportional to the square root of the Fraunhofer distance.

引用

页码：3281 / 3284

页数：4

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