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针对在自由空间中测试超介质吸波材料的高复杂性及高成本特点,实验研究了4种由电谐振单元构成的超介质吸波材料在X波段(8—12GHz)矩形波导里的吸波性能.实验结果表明,此4种吸波材料在终端短路的矩形波导里显示出与其在自由空间中相似的吸波性能及吸波机理.据此,进一步研究了基于超介质吸波材料的矩形波导匹配终端应用.分析结果显示,此种新型匹配终端具有结构紧凑、工作频段可简单控制、成本低等优点.通过展宽超介质吸波材料的吸波频段可设计出宽频带的矩形波导匹配终端.
Aiming at the high complexity and high cost of testing super-medium absorbing materials in free space, four kinds of absorption absorbing materials in the rectangular waveguides of X-band (8-12GHz) Performance.The experimental results show that the four kinds of absorbing materials in the short-circuited rectangular waveguide terminal shows similar to its in free space absorbing performance and absorbing mechanism.Accordingly, further research based on the super-media absorbing material rectangular Waveguide matching terminal.The analysis results show that the new matching terminal has the advantages of compact structure, simple control of working frequency band, low cost and the like.Wide wideband rectangular waveguide matching terminal can be designed by broadening the absorption band of the supermicron absorbing material .