Backward Surface Wave Propagation and Radiation along a One-Dimensional Folded Cylindrical Helix Array

被引:2
作者
Xu, Bin [1 ]
Li, Yang [1 ]
机构
[1] Baylor Univ, Dept Elect & Comp Engn, Waco, TX 76798 USA
关键词
ELECTRICALLY SMALL; DESIGN; ANTENNA;
D O I
10.1155/2015/210254
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
Wave propagation along a closely spaced folded cylindrical helix (FCH) array is investigated for the purpose of designing compact array for energy transport and antenna radiation. It is found that the height of this surface wave guiding structure can be decreased from 0.24 lambda(0) to 0.06 lambda(0) by replacing the monopole element with the FCH. Both the propagation constant and the mode distribution of the dominant wave mechanism are extracted by ESPRIT algorithm, which indicates that a backward propagating surface wave is supported by the array structure. A compact backfire FCH antenna array is designed and measured based on the identified dominant wave mechanism.
引用
收藏
页数:9
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