On the Independence of the Excitation of Complex Modes in Isotropic Structures

被引：15

作者：

Islam, Rubaiyat ^{[1
]}

Eleftheriades, George V. ^{[1
]}

机构：

[1] Univ Toronto, Edward S Rogers Dept Elect & Comp Engn, Toronto, ON M5S 2E4, Canada

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2010年 / 58卷 / 05期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Backward waves; complex modes; coupled-mode theory; metamaterials; TRANSMISSION-LINES; WAVE-GUIDES; COUPLER;

D O I：

10.1109/TAP.2010.2044341

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：

We investigate the independence of the excitation of complex modes in lossless and isotropic structures. We clarify some of the ideas in literature regarding the excitation of complex mode pairs. In particular, we show in this work that it is practically possible to independently control the excitation amplitude of an individual mode in a pair of conjugate complex modes. Theoretical clarification of the claim that such modes in a complex pair must be excited with equal amplitudes, as suggested by some authors, is also provided. The eigenmodes of a coupler comprising a regular forward-wave and a metamaterial backward-wave or negative-refractive-index transmission-line (NRI-TL) provides a representative platform to investigate our assertions which are verified using a commercial microwave circuit simulator.

引用

页码：1567 / 1578

页数：12

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