Dual-Band Fresnel Zone Plate Antenna With Independently Steerable Beams
Dual-Band Fresnel Zone Plate Antenna With Independently Steerable Beams
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具有独立可操纵波束的双频菲涅尔波带板天线
DOI：
10.1109/tap.2018.2804761
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发表时间：
2018-04-01
影响因子：
5.7
通讯作者：
Ran, Lixin
中科院分区：
文献类型：
--
作者：
Li, Huan;Ma, Chao;Ran, Lixin
菲涅耳波带片天线可以利用可重构的二值振幅衍射图样实现波束可控。由于这一独特的特性，与相控阵系统相比，FZP天线具有简洁的结构。到目前为止，FZP天线只能支持单个频段。这是因为在给定时间，孔径上只能存在一个衍射图案。在本通讯中，我们展示了一个双频FZP天线与两个独立共存的衍射图案。基于多对电诱导的不透明性和透明性来实现，这样的衍射图案可以由二进制直流（dc）电压独立地配置。仿真和实验结果验证了理论分析的正确性。该方法可以推广到获得三频FZP天线，在广泛的潜在应用中发挥重要作用。
Fresnel zone plate (FZP) antennas can implement steerable beams based on reconfigurable binary-amplitude diffractive patterns. Because of this unique characteristic, FZP antennas have concise architectures compared with phased array systems. So far, FZP antennas can only support a single frequency band. This is because only one diffractive pattern can exist on the aperture at a given time. In this communication, we demonstrate a dual-band FZP antenna with two independent coexistent diffractive patterns. Implemented based on multiple pairs of electrically induced opacity and transparency, such diffractive patterns can be independently configured by binary direct current (dc) voltages. Simulation and experimental results validated the theoretical analysis. The proposed method can be extended to obtain triple-band FZP antennas, playing important roles in a wide range of potential applications.