Analysis of the Degree of Practically Achievable Superdirectivity using Poynting Streamline Method

被引：0

作者：

Diao, Junming ^{[1
]}

Warnick, Karl F. ^{[1
]}

机构：

[1] Brigham Young Univ, Dept Elect & Comp Engn, Provo, UT 84602 USA

来源：

2017 IEEE INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION & USNC/URSI NATIONAL RADIO SCIENCE MEETING | 2017年

关键词：

D O I：

暂无

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：

Streamlines of Poynting vector fields and antenna effective area shapes provide a unique way to understand the physics of a receiving superdirective antenna. Superdirectivity is implemented by expanding the effective area shape from the border of the antenna physical aperture. Considering using a resonant structure in font of an aperture antenna, under the same resonant element density, the expanded distance of the effective area shape keeps the same for different antenna aperture sizes and shapes. Based on this assumption, superdirectivity is practical for electrically small and middle size antennas and electrically large antennas with a large aspect ratio. A superdirective horn antenna with 115% aperture efficiency was experimentally demonstrated.

引用

页码：363 / 364

页数：2

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