Communication Dispersion Analysis of Wide-Scanning Reflector-Based Leaky Wave Holograms by Adiabatic Floquet-Wave Expansion Method

IF 5.8 1区计算机科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Antennas and Propagation Pub Date : 2025-03-18 DOI:10.1109/TAP.2025.3550699

Mohammadreza Ashrafian;Homayoon Oraizi;Amrollah Amini

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Abstract

In this communication, we propose an analytical method based on the adiabatic Floquet-wave (AFW) expansion and the aperture field estimation technique for wideband reflector-based leaky wave holograms with scanning capability, reducing computational time compared to numerical simulations. Our primary objective is to apply the analytical method not only at the operating frequency but also across other frequencies to theoretically verify the scanning property. To this aim, the dispersion diagrams for 0-indexed and (−1)-indexed Floquet modes are calculated, and the corresponding phase constants at different frequencies are extracted. The proposed antenna has a reflector opening angle of 90° and is designed to generate a pencil beam at 30° from the broadside at 18 GHz. Aperture field estimation confirms the accuracy of our analytical method compared to full-wave simulations. Both analytical and numerical results demonstrate the antenna’s scanning capability in the 16–20-GHz frequency range.

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基于绝热絮团-波展开法的宽扫描反射面漏波全息通信色散分析

在本文中，我们提出了一种基于绝热Floquet-wave （AFW）展开和孔径场估计技术的分析方法，用于具有扫描能力的宽带反射面漏波全息图，与数值模拟相比减少了计算时间。我们的主要目标是将分析方法不仅应用于工作频率，而且应用于其他频率，从理论上验证扫描特性。为此，计算了0索引和（−1）索引Floquet模式的色散图，并提取了不同频率下对应的相位常数。所提出的天线具有90°的反射器开口角，并且被设计为在18 GHz时从侧面产生30°的铅笔波束。与全波模拟相比，孔径场估计证实了分析方法的准确性。分析和数值结果表明，该天线在16 - 20ghz频率范围内具有良好的扫描能力。

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