Metasurface-Based Tapered Waveguide Slot Array Antennas for Wide Angular Scanning in a Narrow Frequency Band

Metasurface-Based Tapered Waveguide Slot Array Antennas for Wide Angular Scanning in a Narrow Frequency Band
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用于窄频带宽角扫描的基于超表面的锥形波导缝隙阵列天线

DOI:
10.1109/tap.2018.2839902
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发表时间:
2018-08
影响因子:
5.7
通讯作者:
Jiao Yongchang
Jiao Yongchang
中科院分区:
计算机科学2区
文献类型:
--
作者:
Zhang Aofang;Yang Rui;Li Dong;Hu Bowei;Lei Zhenya;Jiao Yongchang

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我们展示了一个线性渐变矩形波导缝隙阵列天线的频率扫描性能,使用空间角滤波元表面。更具体地说,在波导的窄边处的超颖表面被示出为能够在来自不同入射角的照明下释放不同波长的能量,而锥形波导被提出来模仿倾斜入射,从而用作天线的激励。这种频率扫描辐射也可以在与适当地在超颖表面后面的另一个偏振选择表面集成时针对两个正交偏振电磁场进行扩展。最后,我们进行了实验来验证我们所提出的设计,并展示了良好的波束扫描性能时,频率变化。
We demonstrate the frequency scanning performances from a linearly tapered rectangular waveguide slot array antenna using the spatial angular filtering metasurface. To be more specific, the metasurface at the narrow side of the waveguide is shown to be capable of releasing different wavelength energies when under the illuminations from different incident angles, while the tapered waveguide is proposed to mimic the oblique incidence and thus functions as the excitation of the antenna. Such frequency scanning radiations can also be extended for both orthogonally polarized electromagnetic fields when integrated with another polarization selective surface properly behind the metasurface. Finally, we carry out the experiments to verify our proposed designs and demonstrate the excellent beam-scanning performances when the frequency is changing.
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