团队有关基于主动共形概念的波束近场赋形缝隙阵天线成果在IEEE TAP期刊上发表

论文名称为“Proactive Conformal Antenna Array for Near-Field Beam Focusing and Steering Based on Curved Substrate Integrated Waveguide”。该工作基于主动共形概念，充分利用天线纵向维度，即采用三维布局而非传统二维布局的方式设计馈电结构，突破传统幅相调控能力限制，实现传统平面难以完成的复杂波束赋形设计。采用三维蜿蜒基片集成波导传输线作为馈线设计载体，并将其用于对相位调控能力要求较高的近场聚焦发生器设计中，实现了两款波束近场赋形的缝隙阵天线。以上两款天线分别解决了近场漏波焦点扫描高度降低的难题，实现了近场波束大范围等高扫描；以及突破驻波缝隙阵天线的幅相调控限制，实现了驻波阵近场高质量聚焦波束。主要完成人有吴亚飞、程钰间。论文链接：https://ieeexplore.ieee.org/document/8606994

Abstract—The quadratic phase distribution on the antenna aperture is necessary to produce a near-field-focused (NFF) beam. The generation, as well as the steering of the quadratic phase distribution, is difficult for a series-fed NFF array antenna, especially for a large-aperture application. This is because the phase control capability of the planar series-fed beam-forming network is limited. In this paper, a curved substrate integrated waveguide (SIW) is employed as the feeding carrier to enhance the amplitude and phase control capability. The spatial placement of the SIW slot array antenna can be sufficiently used to synthesize the desired NFF beam. As examples, two kinds of proactive conformal SIW NFF slot array antennas, working in the standing-wave mode and the leaky-wave mode, have been developed. Both of them have the ability to generate the highquality NFF beam. In addition, the proactive conformal SIW leaky-wave slot array antenna has the stable focal height over a wide steerable range. After careful analysis and design, these two kinds of antenna arrays are fabricated and proactively conformal to 3-D-printed frameworks with the desired shape. The theoretical analysis and simulated results are verified by experimental results.

 Index Terms—Curved substrate integrated waveguide (SIW), near-field focused (NFF), NFF beam steering, NFF SIW slot array antenna, proactive conformal.