A Flexible Surface Description for Arbitrarily Shaped Dielectric Lens Antennas

被引：4

作者：

Jaschke, Thomas ^{[1
]}

Rohrdantz, Benjamin ^{[1
]}

Jacob, Arne F. ^{[1
]}

机构：

[1] Tech Univ Hamburg, Inst Hochfrequenztech, D-21073 Hamburg, Germany

来源：

FREQUENZ | 2015年 / 69卷 / 1-2期

关键词：

dielectric lens antenna; surface description; Fourier-Laplace series; shaped beam; DLA; SUBSTRATE LENS; BAND;

D O I：

10.1515/freq-2014-0124

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：

A method to efficiently describe arbitrarily shaped dielectric lens antennas based on spherical harmonics is proposed. It makes use of a Fourier-Laplace series and requires a low number of expansion coefficients, only. Symmetries can be included to impose special geometries or to further reduce the number of coefficients. The efficiency of the approach enables a fast optimization of the surface. This is particularly useful for electrically small lenses. Three exemplary lens designs based on different specifications are obtained through optimization. The manufacturing is discussed and the radiation characteristics are explored and validated through measurements.

引用

页码：29 / 37

页数：9