Quasi‐optical diplexer by rectangular metallic mesh
Quasi‐optical diplexer by rectangular metallic mesh
复制标题
矩形金属网准光双工器
DOI：
10.1002/ecja.4400671206
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发表时间：
1984
期刊：
影响因子：
--
通讯作者：
R. Iwata
中科院分区：
文献类型：
--
作者：
I. Sato;S. Tamagawa;R. Iwata
本文对利用多层矩形金属网实现宽带准光双工器进行了理论和实验研究。矩形金属网通常用于低于网谐振频率的电感区域。在基于模式匹配法的理论分析中，得出TM斜入射时出现在网栅谐振频率以下的网栅反常谐振是由金属网栅表面产生的高阶模引起的结论。将金属网栅分解为两个正交的金属条形光栅的等效电路分析无法解释这一现象。本文提出了一种砖形矩形金属网，它可以消除工作频率范围内的反常谐振。理论和实验表明，可以实现一种新的金属网格，其传输特性低于网格谐振不根据入射偏振模式而变化。本文介绍了用这种砖形金属网作为准光双工器的设计方法，并给出了对6.4GHz和14.11GHz信号进行双工的实验结果。它被证实，宽带双工是可能的堆叠矩形金属网，设计方法是合法的。
This paper provides the results of theoretical and experimental studies to realize a broadband quasi-optical diplexer with polarization-independent characteristics, using multilayer rectangular metal meshes. A rectangular metal mesh is usually used in the inductive region below the mesh resonant frequency. In the theoretical analysis based on the mode matching method, it is concluded that the anomalous resonance of the mesh appearing below mesh resonant frequency in TM oblique incidence is caused by the higher-order modes generated on the metal mesh surface. This phenomenon can not be explained by the equivalent circuit analysis, in which metal mesh is decomposed to two orthogonal metal strip gratings. A bricktype rectangular metal mesh is proposed in which the anomalous resonance can be eliminated from the operating frequency region. It is shown theoretically and experimentally that one can realize a new metal mesh of which the transmission characteristics below the mesh resonance do not vary in accordance with the incident polarization mode. A design method of quasi-optical diplexer using this brick-type metal mesh is described and the experimental results of the filter designed for diplexing the six, 4 GHz and fourteen, 11 GHz signals are reported. It is confirmed that broadband diplexing is possible with a stacked rectangular metal mesh and that the design method is legitimate.