Perpendicular-Corporate Feed in Three-Layered Parallel-Plate Radiating-Slot Array
Perpendicular-Corporate Feed in Three-Layered Parallel-Plate Radiating-Slot Array
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DOI：
10.1109/tap.2017.2751659
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发表时间：
2017-09
影响因子：
5.7
通讯作者：
H. Irie;J. Hirokawa
中科院分区：
文献类型：
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作者：
H. Irie;J. Hirokawa
为了完全消除传统平面波导波导槽阵天线辐射部分的x形腔壁，我们提出了一种三层平行板波导槽阵天线的垂直同轴馈电。底部的耦合孔在平行板中激发以其中间间距的一半间隔的辐射槽。我们在耦合孔和辐射槽层之间的区域放置适当介电常数的介电介质，对大量的槽进行强驻波激发。在顶部增加寄生槽层以提高带宽。设计了一种16 × 16槽阵列天线，用于垂直和平面共同馈源的均匀激励，并在60 GHz频段制造。在设计频率为61.5 GHz时，测量到的指向性为33.5 dBi，孔径效率为90.6%。
We propose a perpendicular-corporate feed in a three-layered parallel-plate radiating-slot array to remove the x-shaped cavity walls completely in the radiating part of the conventional planar corporate-feed waveguide slot array antenna. Coupling apertures on the bottom excite radiating slots spaced with the half of their spacing on the middle in the parallel plates. We place dielectric with proper permittivity in the region between the coupling aperture and the radiating-slot layer to excite a standing wave strongly there for a large number of slots. A parasitic-slot layer is added on the top to improve the bandwidth. A $16 \times 16$ slot array antenna is designed for uniform excitation with the perpendicular and the planar corporate feeds, and fabricated in the 60 GHz band. At the design frequency of 61.5 GHz, the measured directivity is 33.5 dBi with the aperture efficiency of 90.6%.