Multilayer Dielectric End-Fire Antenna With Enhanced Gain
Multilayer Dielectric End-Fire Antenna With Enhanced Gain
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DOI：
10.1109/lawp.2018.2871103
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发表时间：
2018-12-01
影响因子：
4.2
通讯作者：
Weller, Thomas M.
中科院分区：
文献类型：
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作者：
Lugo, Denise C.;Ramirez, Ramiro A.;Weller, Thomas M.
研究了多层端射介质棒天线 (DRA) 设计中使用的低介电常数包层在扩展 Ku 频段 (10-18 GHz) 中的回波损耗、增益和半功率波束宽度 (HPBW) 的影响。与相同长度的单层设计相比，使用 1.6 至 2.6 之间的包层介电常数可实现 4 至 7 dB 的增益改进。例如，与非包层棒相比，epsilon(r) = 1.6 的包层导致 18 GHz 下的峰值增益增量为 4.5 dB，HPBW 降低 20 度。实验还证明，该设计具有与非包层设计相同的最大增益，但长度延长了 1.8 倍。可以调整多层 DRA 中的包层介电常数，以在频带内不同频率下实现峰值性能，同时在整个频带内提供增益增强，而无需减少带宽。
The effect of a low permittivity cladding used in a multilayer end-fire dielectric rod antenna (DRA) design is studied in terms of return loss, gain, and half-power beam width (HPBW) in the extended Ku band (10-18 GHz). Gain improvement ranging from 4 to 7 dB, when compared to a single-layer design of the same length, is achieved using cladding permittivities between 1.6 and 2.6. For example, a cladding of epsilon(r) = 1.6 leads to a peak gain increment of 4.5 dB at 18 GHz and a 20 degrees HPBW reduction compared to the noncladded rod. It is also demonstrated that this design has the same maximum gain as a noncladded design that is 1.8 times longer. The cladding permittivity in the multilayer DRA can be adjusted to achieve peak performance at different frequencies within the band, while providing gain enhancement in the entire band without reducing the bandwidth.