Aperture-Shared Millimeter-Wave/Sub-6 GHz Dual-Band Antenna Hybridizing Fabry-Perot Cavity and Fresnel Zone Plate
Aperture-Shared Millimeter-Wave/Sub-6 GHz Dual-Band Antenna Hybridizing Fabry-Perot Cavity and Fresnel Zone Plate
复制标题
共享孔径毫米波/低于 6 GHz 双频天线混合法布里-珀罗腔和菲涅耳波带板
DOI：
10.1109/tap.2021.3098559
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发表时间：
2021
影响因子：
5.7
通讯作者：
Xue Quan
中科院分区：
文献类型：
--
作者：
Zhu Jianfeng;Yang Yang;Liao Shaowei;Xue Quan
本文提出了一种用于亚6 GHz和毫米波频段的双频段大频率比高增益共口径天线。首先，采用单层周期性网格贴片实现了亚6 GHz频段Fabry-Pérot腔（FPC）天线的部分反射面（PRS），而采用周期性双屏偶极子实现了毫米波段菲涅耳波带片（FZP）透镜天线的不透明区。然后，将PRS和FZP透镜混合在一起，升级为一种复合超颖表面，它同时作为亚6 GHz FPC天线的PRS和毫米波段FZP透镜，具有很小的双频互干扰。因此，FPC天线和FZP透镜可以以高的孔径再利用效率共享相同的孔径。因为原理是基于FPC谐振和准直FZP透镜，所以在没有馈电网络的情况下在两个频带上都实现了高增益。同时，设计了一个双频大频率比天线作为馈源。工作在3和28 GHz频段的原型设计，制造和测量，以验证这一想法。
This article presents an aperture-shared dual-band large frequency-ratio high gain antenna for sub-6 GHz and millimeter-wave (mm-wave) bands applications. Initially, the partially reflective surface (PRS) of the Fabry–Pérot cavity (FPC) antenna operating at the sub-6 GHz band is realized by using single-layered periodic grid patches while the opaque region of the mm-wave bandwaveband Fresnel zone plate (FZP) lens antenna is implemented by using periodic double-screen dipoles. Then, the PRS and the FZP lens are hybridized together and upgraded into a kind of composite metasurface, which simultaneously functions as the PRS of the sub-6 GHz FPC antenna and the mm-wave bandwaveband FZP lens with little dual-band mutual interference. Thus, the FPC antenna and the FZP lens can share the same aperture with high aperture reuse efficiency. Because the principles are based on the FPC resonance and the collimating FZP lens, high gains are achieved at both bands without a feeding network. Meanwhile, a dual-band large frequency-ratio antenna is designed as the feed. A prototype working at 3 and 28 GHz bands is designed, fabricated, and measured to verify the idea.