基于结构复用的双频圆极化共口径天线设计
A Dual-Band Circularly Polarized Shared-Aperture Antenna Based on Structure Reuse
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摘要: 提出了一款低剖面宽波束高口径利用率的双频圆极化共口径天线。天线采用结构复用的设计理念,规划拓扑布局,设计不同类型的天线单元。上层采用微带环形贴片使其工作在无人机数据传输频段(1430－1444 MHz),下层采用微带圆形贴片使其工作在无人机遥控频段(2408－2440 MHz)。环形贴片既是低频辐射器,同时也作为高频引向器进行波束调控,实现宽波束特性。仿真和测试结果表明,该天线具有良好的阻抗匹配和圆极化特性,阻抗和轴比带宽均覆盖了无人机通信系统的两个工作频段,同时天线的剖面高度仅为0.07λ0。因此,实现了结构紧凑、性能可控的宽波束双频圆极化共口径天线,在无人机通信系统中具有潜在的应用价值。Abstract: A low-profile wide-beam dual-band circularly polarized (CP) shared-aperture antenna with high aperture reuse efficiency is proposed in this paper. The antenna adopts the structure reuse design concept, plans the topology layout and designs different types of antenna elements. The top layer uses microstrip ring antenna and works in the band of unmanned aerial vehicle (UAV) data transmission (1430-1444 MHz). The bottom layer uses microstrip circular patch antenna and works in the band of UAV remote control (2408-2440 MHz). The ring patch is not only a low-band radiator, but also serves as a high-band director for beam control to achieve wide beam characteristics. Simulated and measured results show that the antenna has good impedance matching and CP radiation characteristics with the impedance and axial ratio bandwidth both cover the two operating bands of UAV communication. At the same time, the height is only 0.07λ0. Therefore, a widebeam dual-band CP shared-aperture antenna with a compact structure and controllable performance is realized, which has application value in UAV communication systems.
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Keywords:
- structure reuse /
- low-profile /
- broad beamwidth /
- dual-band /
- circularly polarized /
- shared-aperture
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期刊类型引用(2)
1. 李文，尤阳，陆云龙，黄季甫，沈书豪. 一种宽带双极化波束切换微带天线的设计. 微波学报. 2024(01): 18-22+27 . 
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2. 王帅，孙姗，薛严冰，宋智. 基于单谐振结构的金属裂纹CRFID传感器设计. 电子测量技术. 2024(03): 48-54 . 百度学术
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