On the Impact of Reactive Region on the Near-Field Channel Gain

被引：3

作者：

Ouyang, Chongjun ^{[1
]}

Wang, Zhaolin ^{[2
]}

Zhao, Boqun ^{[3
]}

Zhang, Xingqi ^{[3
]}

Liu, Yuanwei ^{[4
]}

机构：

[1] Univ Coll Dublin, Sch Elect & Elect Engn, Dublin 4, Ireland

[2] Queen Mary Univ London, Sch Elect Engn & Comp Sci, London E1 4NS, England

[3] Univ Alberta, Dept Elect & Comp Engn, Edmonton, AB T6G 1H9, Canada

[4] Univ Hong Kong, Dept Elect & Elect Engn, Hong Kong, Peoples R China

来源：

IEEE COMMUNICATIONS LETTERS | 2024年 / 28卷 / 10期

关键词：

Apertures; Antenna arrays; Antennas; Mathematical models; Tensors; Meters; Aperture antennas; Channel gain; near-field communications; reactive region;

D O I：

10.1109/LCOMM.2024.3435487

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

The near-field channel gain is analyzed by considering both radiating and reactive components of the electromagnetic field. Novel expressions are derived for the channel gains of spatially-discrete (SPD) and continuous-aperture (CAP) arrays, which are more accurate than conventional results that neglect the reactive region. To gain further insights, asymptotic analyses are carried out in the large limit of the aperture size, based on which the impact of the reactive region is discussed. It is proved that for both SPD and CAP arrays, the impact of the reactive region on near-field channel gain is negligible, even as the array aperture size approaches infinity.

引用

页码：2417 / 2421

页数：5

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