论文名称“Generation of Nondiffraction Self-Accelerating Beam via Airy-Bessel Fusion in Two Orthogonal Directions”。近场无衍射自弯曲波束以其卓越的绕障能力，在微波、毫米波乃至太赫兹波段展现出了非凡的应用潜力，预示着在下一代通信系统、近场高速数据传输以及高精度近场成像技术的潜在进步。然而，传统无衍射自弯曲波束的生成过程复杂，高度依赖于透镜系统以调控幅度与相位。为克服这一难题，提升近场无衍射自弯曲波束生成器的集成度与实用性，本文开创性地提出了一种自弯曲波束生成策略，并据此设计了一款低剖面、高度集成的自弯曲波束生成阵列。该策略的核心在于，将近场贝塞尔波束与艾里波束在两个正交维度上进行巧妙融合，旨在最大限度地减少两者间的相互干扰，从而优化波束性能。更进一步地，我们采用梯度匹配法，有效解决了两波束融合过程中在水平面与垂直面可能产生的性能退化问题，成功生成了聚焦效果良好、连续且无衍射的自弯曲波束。为了直观展示该方法的实效性，我们精心设计并制造了一款低剖面天线阵列，用于无衍射弯曲波束的生成实验。实验结果显示，该方法显著降低了无衍射自弯曲波束的生成难度，实现了技术上的重大突破。尤为值得一提的是，依托此方法，我们的研究团队在国际舞台上首次通过天线阵列成功生成了无衍射自弯曲波束。工作主要完成人：游青，吴亚飞，程钰间。

论文链接：https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10294307

Abstract— In this article, a novel method to generate 2-D nondiffraction self-accelerating beam by fusing Airy and Bessel profiles in two orthogonal planes is proposed. This method combines the self-acceleration and nondiffraction characteristics of the Airy beam with the nondiffraction property of the Bessel beam to generate the 2-D nondiffraction beam that propagates along a curved trajectory. A field gradient matching method is proposed for optimizing the performance of the 2-D nondiffracting self-accelerating beam. By fusing the Airy and Bessel profiles, the proposed Airy–Bessel beam inherits the advantages of both beams, which exhibit a curved trajectory while maintaining a symmetrical transverse intensity profile with reduced oscillation periods. This reduces complexity in implementation, particularly with the ability to separate the beam into two independent parts along two orthogonal directions, making it suitable for array antennas. To validate the method, a waveguide slot antenna array is designed and fabricated based on the proposed method, which employs a linear slot antenna array to achieve the Airy distribution and a feed network for the Bessel distribution. Through numerical calculations, full-wave simulations, and experimental results, the effective generation of the 2-D nondiffracting self-accelerating beam of the proposed method is demonstrated. The proposed approach offers great potential for advanced beam manipulation in various practical applications, such as near-field high-speed communication, wireless energy transmission, and imaging.

Index Terms— Airy beam, Bessel beam, nondiffraction, self-acceleration.