A Compact Dual-Band Single-Feed Slotted Waveguide Array Antenna for Unidirectional Radiation Patterns

IF 4.6 1区计算机科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Antennas and Propagation Pub Date : 2024-10-25 DOI:10.1109/TAP.2024.3484150

Aritra Roy;Rozenn Allanic;Thierry Le Gouguec;Francois Gallee;Erwan Fourn;Anne-Charlotte Amiaud;Hervé Legay

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Abstract

A dual-band slotted waveguide array (SWA) antenna is designed using a single waveguide by placing the radiating slots for 18 and 24 GHz on the same antenna aperture. These bands are excited using a single excitation point through a conventional waveguide feeding technique to radiate unidirectional radiation patterns of the same polarization. Theoretical analyses are carried out to study the conductance of the slots to understand their effects on the dual-band performance. Numerical analyses are performed to optimize the antenna by considering mutual coupling. The antenna is fabricated using stereolithography (SLA) and direct metal laser sintering (DMLS) processes to compare its performance in different additive manufacturing techniques. In characterizing the fabricated prototype, an impedance matching of

$|S_{11}|\lt -10$

dB and the boresight antenna gains of 14 and 17.4 dBi are measured in these bands with unidirectional and linearly polarized radiation patterns. A quantitative comparison among dual-band SWA antennas is presented at the end of this article to highlight the uniqueness of the proposed approach over the state-of-the-art solutions.

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通过在同一天线孔径上放置 18 和 24 千兆赫的辐射槽，利用单波导设计了双波段槽式波导阵列（SWA）天线。通过传统的波导馈电技术，使用单个激励点对这两个波段进行激励，从而辐射出相同极化的单向辐射模式。理论分析研究了槽的电导，以了解它们对双频性能的影响。还进行了数值分析，以通过考虑相互耦合来优化天线。天线采用立体光刻（SLA）和直接金属激光烧结（DMLS）工艺制作，以比较其在不同增材制造技术中的性能。在对制作的原型进行表征时，测量到这些频段的阻抗匹配为 $|S_{11}|lt -10$ dB，孔径天线增益为 14 和 17.4 dBi，辐射模式为单向和线性偏振。本文最后对双波段 SWA 天线进行了定量比较，以突出所提方法相对于最先进解决方案的独特性。

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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来源期刊

IEEE Transactions on Antennas and Propagation 工程技术-电信学

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