A TE/TM modal solution for rectangular hard waveguides

被引：9

作者：

Epp, LW

Hoppe, DJ

Kelley, DT

机构：

[1] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA

[2] Honeywell Technol Solut Inc, Columbia, MD 21046 USA

来源：

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES | 2006年 / 54卷 / 03期

基金：

美国国家航空航天局;

关键词：

characteristic equation; hard rectangular waveguide; longitudinally corrugated waveguide; modal solution;

D O I：

10.1109/TMTT.2005.864135

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 TE/TM modal solution for a longitudinally corrugated rectangular waveguide is developed. These longitudinal corrugations can be used to excite a quasi-TEM wave and form a hard waveguide by correctly choosing the impedance at the guide wall. The correctly chosen impedance is referred to as the hard boundary condition. The modal solution developed here solves the problem of longitudinal corrugations filled with a dielectric material by first finding and solving the characteristic equation for a complete TE/TM modal set. It is shown that this TE/TM mode solution can be used to achieve the hard boundary condition resulting in the quasi-TEM wave in a hard waveguide for discrete values of corrugation depth. Beyond each of these depths, a mode becomes a surface wave. The theoretical mode set is amenable to the solution of problems using the mode-matching method. A combination of the mode-matching method and the TE/TM modal solution will allow the solution of larger problems.

引用

页码：1048 / 1054

页数：7

共 19 条

[1] Analysis and measurement of hard-horn feeds for the excitation of quasi-optical amplifiers [J].