基于电可调狭缝天线和双层频率选择表面的法布里-珀罗天线

A. Sosunov, A. Altynnikov, T. Legkova, R. Platonov, A. E. Komlev
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摘要

介绍。法布里-珀罗天线设计的一个方向是扩大其工作频率范围。在本研究中,我们着手开发一种在宽频率范围内具有平滑增益模式的法布里-珀罗天线。为此,我们使用了一种基于薄膜铁电变容器的可调谐槽形天线。主要的开发标准是增益模式的高度均匀性,在给定频段内不超过 1 dB。目标为 4.9-5.5 GHz 频率范围开发一种在工作频段内具有高增益均匀性的法布里-珀罗天线。正在开发的天线以薄膜铁电电容器为可调元件。两面金属化的氟塑料板被用作制造频率选择表面和槽形天线的介电材料。使用共振技术测量了铁电元件的参数,而介质材料的参数则是使用尼科尔森-罗斯-韦尔法确定的。开发的天线工作频段为 4.9-5.5 GHz。制造了铁电电容器和箔电介质材料样品,并进行了实验研究。制作了可调谐槽形天线,并测量了其特性。仿真结果表明,所开发的法布里-珀罗天线在工作频率范围内的增益值不小于 10 dB。工作频段内增益值的变化不超过 0.7 dB。基于电可调槽天线和双层频率选择表面的法布里-珀罗天线研制成功。所开发设备的工作频段为 4.9-5.5 GHz,与 Wi-Fi 网络的频段一致。对天线设计参数的优化使其在工作频段的微小变化下获得更高的增益值成为可能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Fabry–Perot Antenna Based on an Electrically Tunable Slot Antenna and a Two-Layer Frequency-Selective Surface
Introduction. One of the directions in Fabry–Perot antenna design consists in increasing its operation frequency range. In the present work, we set out to develop a Fabry–Perot antenna with a smooth gain pattern across a wide frequency range. To that end, a tunable slot antenna based on a thin-film ferroelectric varactor was used. The major development criterion was a high uniformity of the gain pattern, not exceeding 1 dB in the given frequency band. Aim. To develop a Fabry–Perot antenna for the 4.9–5.5 GHz frequency range with a high gain uniformity within the operating frequency band.Materials and methods. The antenna under development was based on thin-film ferroelectric capacitors as tunable elements. Fluoroplastic plates metallized on both sides were used as a dielectric material for manufacturing a frequency selected surface and a slot antenna. The parameters of ferroelectric elements were measured using a resonance technique, while the parameters of the dielectric material were determined using the Nicholson–Ross–Weir method.Results. The developed antenna has an operating frequency band of 4.9–5.5 GHz. Samples of ferroelectric capacitors and foiled dielectric material were manufactured and experimentally investigated. A tunable slot antenna was fabricated, and its characteristics were measured. The simulation results show that the gain value of the developed Fabry–Perot antenna is not less than 10 dB in the operation frequency range. Variations in the gain value within the operating frequency band do not exceed 0.7 dB.Conclusion. A Fabry–Perot antenna based on an electrically tunable slot antenna and a two-layer frequency-selective surface was developed. The operating frequency band of the developed device ranges within 4.9–5.5 GHz, which corresponds to the frequency band of Wi-Fi networks. Optimization of the antenna design parameters made it possible to achieve higher gain values under their minor variations in the operation frequency band.
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