一种圆极化透镜天线

A circularly polarized lens antenna

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

2 Scopus Citations
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Author(s)

Detail(s)

Original languageChinese (Simplified)
Pages (from-to)387-391
Journal / PublicationDianbo Kexue Xuebao/Chinese Journal of Radio Science
Volume33
Issue number4
Publication statusPublished - Aug 2018

Abstract

提出了一款宽频带高增益的圆极化毫米波天线.该天线由一个半球形的介质透镜圆顶以及一个圆柱形极化器结合而成,将传统的扩展半球介质透镜与介质极化器融合在一起,既能将线极化波转化成圆极化波(反之亦然),又能有效提高天线的增益.该设计与传统的级联结构(透镜级联极化器)不同,它能够用一个器件同时实现两个器件的功能,并且能大大减小系统的体积,降低插入损耗,减少生产成本.此外,该天线采用3D打印技术来实现,加工精度高并且容易生产,适合于毫米波天线的应用.经过验证,该天线的阻抗带宽能达到38%,轴比带宽为36%,圆极化增益达到22 dBic.
This paper presents a design of a wideband and high gain circularly polarized(CP) antenna for millimeter-wave applications. The proposed lens consists of a hemispherical lens and a cylindrical polarizer, which integrate a dielectric polarizer with a dielectric hemispherical lens, and can transfer an incident wave from linear to circular polarization. The proposed CP lens is different from the cascaded design of a polarizer and a lens. It can achieve dual function by using single device. Moreover, it can decrease the profile of the extended hemispherical lens, and decrease the insertion loss and the cost of the antenna as well. Besides, benefiting from the low-cost three-dimensional (3D) printed technology, the CP lens can be fabricated in an accurate and convenient way. For demonstration, the proposed circularly polarized lens antenna is implemented and measured. This antenna can achieve a wide impedance bandwidth of 38% and a wide axial ratio(AR) bandwidth of 36%, and its gain can reach 22 dBic.

Research Area(s)

  • 毫米波天线, 宽带天线, 圆极化天线, 3D打印天线, 透镜天线, 3D printing antenna, Circularly polarization antenna, Lens antenna, Millimeter wave antenna, Wide bandwidth