Compact Multibeam Antenna Array Facilitated by Miniaturized Slow Wave Substrate Integrated Waveguide Butler Matrix

IF 4.6 1区 计算机科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC IEEE Transactions on Antennas and Propagation Pub Date : 2024-09-24 DOI:10.1109/TAP.2024.3463203
Jing-Ya Deng;Yin Zhang;Wei Lin
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Abstract

This communication presents a compact multibeam antenna array facilitated by a $4\times 4$ Butler matrix with substantially miniaturized dimensions based on a slow-wave substrate integrated waveguide (SW-SIW). It is well known that the conventional Butler matrix is bulky as the beamformer occupies most area of the multibeam array. In this work, the miniaturization of the Butler matrix is realized by loading slow wave (SW) structures in the form of loaded patches and non-inclusive via-holes into substrate integrated waveguide (SIW). In this manner, the effective permittivity and permeability of the SIW are increased. Consequently, both the guided wavelength and the cut-off frequency of the SIW are largely reduced. This SW-SIW technology enables the designs of miniaturized couplers, crossovers, and phase shifters with substantially reduced longitudinal and lateral dimensions. With these miniaturized components, a Butler matrix with excellent performance is developed, which is 75.5% smaller compared with the conventional SIW-based Butler matrix. The miniaturized $4\times 4$ Butler matrix is then employed to design a compact four-beam slot antenna array. The measured results agree reasonably well with the simulations, demonstrating the feasibility of the miniaturized SW-SIW Butler matrix in designing a compact multibeam antenna array.
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本文介绍了一种紧凑型多波束天线阵列,它采用了基于慢波基底集成波导(SW-SIW)的$4\times 4$ Butler矩阵,尺寸大大缩小。众所周知,传统的巴特勒矩阵体积庞大,因为波束形成器占据了多波束阵列的大部分面积。在这项工作中,通过在基底集成波导(SIW)中加载贴片和非包容通孔形式的慢波(SW)结构,实现了巴特勒矩阵的小型化。通过这种方式,SIW 的有效介电常数和磁导率都得到了提高。因此,SIW 的导波波长和截止频率都大大降低。利用这种 SW-SIW 技术,可以设计出微型耦合器、分频器和移相器,并大幅缩小纵向和横向尺寸。利用这些微型元件,开发出了性能卓越的巴特勒矩阵,与传统的基于 SIW 的巴特勒矩阵相比,体积缩小了 75.5%。小型化的 $4/times 4$ 巴特勒矩阵随后被用于设计紧凑型四波束槽天线阵列。测量结果与模拟结果相当吻合,证明了小型化 SW-SIW 巴特勒矩阵在设计紧凑型多波束天线阵列中的可行性。
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来源期刊
CiteScore
10.40
自引率
28.10%
发文量
968
审稿时长
4.7 months
期刊介绍: IEEE Transactions on Antennas and Propagation includes theoretical and experimental advances in antennas, including design and development, and in the propagation of electromagnetic waves, including scattering, diffraction, and interaction with continuous media; and applications pertaining to antennas and propagation, such as remote sensing, applied optics, and millimeter and submillimeter wave techniques
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Table of Contents 2024 Industrial Innovation Award 2024 Distinguished Industry Leader Award 2024 IEEE AP-S Piergiorgio L.E. Uslenghi Prize Paper Award 2024 IEEE AP-S Harold A. Wheeler Application Prize Paper Award
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