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Sub-millimeter Wave Propagation Characteristics in a Semiconductor slab Periodically Loaded with Magnetized Solid-State plasma

周期性加载磁化固态等离子体的半导体板中的亚毫米波传播特性

基本信息

批准号：
12680472
负责人：
OBUNAI Tetsuo
金额：
$ 2.11万
依托单位：
Akita University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2000
资助国家：
日本
起止时间：
2000 至 2002
项目状态：
已结题

项目摘要

Experimental studies were carried out on 70 GHz millimeter wave propagation characteristics of a dielectric guide of 1 mm thickness periodically loaded with n-InSb rods as solid plasma material both in room temperature and in liquid-nitrogen temperature. The experimentally observed characteristics were compared with theoretical ones obtained with FDTD analysis. Good quantitative agreements were seen between the theory and the experiments. The results show that the above-mentioned structure works as a band-rejection filter, and that its filter characteristics can be largely controlled with the variation of the plasma density and/or plasma distribution, or by the variation of a transversely applied magneic field. Experiments were also carried out with 526 GHz submillimeter wave using a dielectric guide of 0.125 mm thickness. Obtained results again showed good agreements with theoretical predictions.Millimeter wave and sub-millimeter wave radiation characteristics from a plasma periodical structure were also studied experimentally and theoretically. The results revealed that the magnitude and the direction of the radiation largely depend upon the applied transverse magnetic field. Studies on the reflection of sub-millimeter wave by a similar plasma periodic structure in a transversely applied magnetic field are also under way.An FDTD analysis was carried out on a TE mode propagation in millimeter wave and sub-millimeter wave image guide loaded with a thin solid magnetoplasma slab. Results show a possibility of displacement of the propagation power distribution. Experimental results at 70 GHz millimeter wave and 526 to 671 sub-millimeter wave frequencies were in agreement with the corresponding theoretical ones. Possibility of an Y-type circulator was demonstrated at 70GHz.

在室温和液氮温度下，对1 mm厚周期性加载n-InSb棒作为固体等离子体材料的介质波导进行了70 GHz毫米波传播特性的实验研究。将实验观测到的特性与FDTD分析得到的理论特性进行了比较。理论和实验在数量上很好地吻合。结果表明，该结构作为一种带阻滤波器，其滤波特性在很大程度上可以通过等离子体密度和/或等离子体分布的变化或横向外加磁场的变化来控制。采用0.125 mm厚度的介质波导，对526 GHz亚毫米波进行了实验。所得结果与理论预测吻合良好。实验和理论研究了等离子体周期结构的毫米波和亚毫米波辐射特性。结果表明，辐射的大小和方向在很大程度上取决于外加的横向磁场。类似的等离子体周期结构在横向磁场作用下对亚毫米波的反射研究也在进行中。利用时域有限差分法分析了载有固体磁等离子体薄板的毫米波和亚毫米波图像波导中TE模式的传播。结果表明，传播功率分布有可能发生位移。在70 GHz毫米波和526 ~ 671次毫米波频率下的实验结果与理论结果一致。在70GHz下演示了y型环行器的可能性。