Subwavelength 8 × 8 Butler Matrix With Pixel Metamaterial for Space Limited Systems

IF 3.4 0 ENGINEERING, ELECTRICAL & ELECTRONIC
Pengyu Fu;Yongjian Zhang;Mingzhe Hu;Ziheng Zhou;Hao Li;Yue Li
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引用次数: 0

Abstract

In this letter, a subwavelength $8\times 8$ Butler matrix (BM) with inverse-designed pixel metamaterial is proposed for space limited systems. With inverse-designed metamaterial, the broadband asymmetric 3-dB couplers with arbitrary phase difference are constructed, which eliminates the space for phase delay lines in BM, significantly reducing the overall size. Finally, a prototype of the proposed BM is fabricated and measured, which exhibits a bandwidth of 21.6% by occupying a compact size of $0.95\lambda _{0}\times 0.70\lambda _{0}\times 0.01\lambda _{0}$ . With a subwavelength scale, the proposed ultracompact BM can be easily integrated with antenna array for applications in compact multibeam systems.
空间有限系统中具有像素超材料的亚波长8 × 8巴特勒矩阵
在这封信中,提出了一种具有反设计像素超材料的亚波长$8\ × 8$ Butler矩阵(BM),用于空间有限的系统。利用反向设计的超材料,构建了任意相位差的宽带非对称3db耦合器,消除了BM中相位延迟线的空间,显著减小了整体尺寸。最后,制作并测量了该原型机,其带宽为21.6%,占用的紧凑尺寸为0.95\lambda _{0}\乘以0.70\lambda _{0}\乘以0.01\lambda _{0}$。在亚波长尺度下,所提出的超紧凑BM可以很容易地与天线阵列集成,用于紧凑的多波束系统。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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