Series Arrangement Technique for Highly-Directive PCB Leaky-Wave Antennas With Application to RFID UHF Frequency Scanning Systems

IF 3.5 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Open Journal of Antennas and Propagation Pub Date : 2024-09-06 DOI:10.1109/OJAP.2024.3455421

Miguel Poveda-García;Alejandro Gil-Martínez;Astrid Algaba-Brazález;David Cañete-Rebenaque;José Luis Gómez-Tornero

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引用次数: 0

Abstract

The efficient series connection of planar leaky-wave antennas (LWA) to obtain directive frequency beam scanning, is proposed in this paper. Conditions for the proper performance are here derived, showing that the distance between antennas must be minimized while optimizing the phase shift introduced by the interconnection. Consequently, the methodology to design the transition is presented by an example using SMA connectors and a meander coaxial cable. Such series arrangement is useful to overcome the restricted directivity of planar LWAs in the UHF band due to limited PCB standard manufacturing sizes, while optimizing the radiation efficiency. The presented theory is validated with practical design examples of microstrip LWA arrays operating in the 900 MHz UHF band. Also, the frequency-beam scanning behaviour of the series-fed LWA array is analysed, demonstrating good performance when the proposed design conditions are satisfied, compared to a non-optimized design which can lead to destructive interference in the desired scanning directions.

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应用于 RFID UHF 频率扫描系统的高指向性 PCB 泄漏波天线串联排列技术

本文提出了高效串联平面漏波天线（LWA）以获得定向频率波束扫描的方法。本文推导了实现适当性能的条件，表明在优化互连引入的相移的同时，必须最大限度地减少天线之间的距离。因此，本文通过一个使用 SMA 连接器和蜿蜒同轴电缆的示例，介绍了设计过渡的方法。这种串联安排有助于克服 UHF 波段平面 LWA 因印刷电路板标准制造尺寸有限而导致的指向性受限问题，同时优化辐射效率。所提出的理论通过在 900 MHz UHF 频段工作的微带 LWA 阵列的实际设计实例得到了验证。此外，还对串联馈电 LWA 阵列的频率波束扫描行为进行了分析，结果表明，与可能导致所需扫描方向出现破坏性干扰的非优化设计相比，在满足所提出的设计条件时，LWA 阵列具有良好的性能。

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 Open Journal of Antennas and Propagation Multiple-

CiteScore

6.50

自引率

12.50%

发文量

审稿时长

8 weeks