Left-handed transmission characteristics of rectangular waveguides periodically loaded with ferrite

被引：24

作者：

Ueda, T ^{[1
]}

Tsutsumi, M

机构：

[1] Kyoto Inst Technol, Dept Elect & Informat Sci, Sakyo Ku, Kyoto 6068585, Japan

[2] Fukui Univ Technol, Dept Space Commun Engn, Fukui 9108505, Japan

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2005年 / 41卷 / 10期

关键词：

ferrite-loaded-waveguides; left-handed transmission lines; periodic structures; rectangular waveguides; waveguide theory;

D O I：

10.1109/TMAG.2005.854463

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A left-handed rectangular waveguide periodically filled with tangentially magnetized ferrite medium has been proposed, and backward wave characteristics in the structure have been confirmed numerically by using a mode-matching method. The operational frequency is selected to be below the cutoff frequency for a dominant TE10 mode in a rectangular waveguide where the effective permittivity is negative. The obtained results show that there exist backward-wave modes in the negative permeability frequency region where magnetostatic surface wave modes can be supported, and the field profiles have a sinusoid-like form composed of a series of exponentials in each section. In addition, three-dimensional full-wave simulation is demonstrated, which shows that unexpected excitations of magnetostatic surface wave mode transversely propagating along a surface of the ferrite layer near the input port plays a role of a transformer from a guided TE10 mode to the backward wave mode and vice versa near the output port.

引用

页码：3532 / 3537

页数：6

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