论文标题
Fabry-Perot天线和宽带液体吸收器的功能可重新配置的集成结构
Functionally Reconfigurable Integrated Structure of Fabry-Perot Antenna and Wideband Liquid Absorber
论文作者
论文摘要
本文提出了Fabry-Perot（FP）天线和宽带液体吸收器的功能可重新配置的集成结构。部分反射表面（PRS）经过精心量身定制，既可以用作FP天线的组成部分，又是宽带液体吸收器的金属地面。然后，通过将FP天线与液体吸收器相结合来实现集成结构。 PRS由基板顶层的斑块组成，底部的方环和微带贴片天线用作源。液体吸收器由一个3-D打印的容器，45％的乙醇层和金属接地组成。通过这种设计，当乙醇被提取时，当乙醇注入乙醇时，结构可以用作FP天线。这可以用于在检测模式和隐身模式之间切换，该模式可以更好地适应复杂的电磁环境。仿真结果表明，当提取乙醇时，天线的增益达到19.7 dBi，而操作带为100 MHz。当注入乙醇时，吸收剂的吸收带范围为4 GHz至20 GHz，吸收带宽超过133％。乙醇范围从4 GHz到20GHz的结构的单恒定RCS还原带，平均RCS还原为28.4 dB。测量和模拟的结果一致。
This paper proposes a functionally reconfigurable integrated structure of a Fabry-Perot (FP) antenna and wideband liquid absorber. The partial reflecting surface (PRS) is elaborately tailored to serve as both a component of the FP antenna and the metal ground of the broadband liquid absorber. Then the integrated structure is realized by combining the FP antenna with the liquid absorber. The PRS is composed of patches on the top layer of the substrate and the square loop on the bottom and the microstrip patch antenna is used as a source. The liquid absorber is composed of a 3-D printed container, 45% ethanol layer, and a metal ground. By this design, the structure can serve as the FP antenna when the ethanol is extracted or the liquid absorber when the ethanol is injected. This can be used to switch between detection and stealth mode which can better adapt to the complex electromagnetic environment. The simulation results show that the gain of the antenna reaches to 19.7 dBi and the operating band is 100 MHz when the ethanol is extracted. When the ethanol is injected, the absorption band of the absorber ranges from 4 GHz to 20 GHz and the absorption bandwidth is over 133%. The monostatic RCS reduction bands of the structure with ethanol range from 4 GHz to 20GHz and the average RCS reduction is 28.4 dB. The measured and simulated results agree well.
