An analytical array scanning method for field computations of sources within a periodic structure

IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010) Pub Date : 1999-07-11 DOI:10.1109/APS.1999.789247

Hung Yu, D. Yang

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引用次数: 2

Abstract

In the past, there is little work on field analysis of source interaction with periodic structures. This paper describes a numerically exact method for both near and far fields of sources (anomalies) within periodic structures. The problem is first converted into numerical modeling of infinite phased array of artificial sources. Analytical array scanning of the infinite array fields results in the desired field solutions. The examples of a line-source within a corrugated parallel-plate waveguide, a line-source within a dielectric-strip grating structure, and a dipole on an artificial periodic substrate are given to illustrate this general numerical approach. A contribution of this work is that it identifies the mode-conversion mechanism from plane-waves to periodic waves, and it also provides fundamental understanding of field theory of sources within two- or three-dimensional periodic (photonic band-gap) media.

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一种用于周期结构内源场计算的解析阵列扫描方法

过去，对震源与周期结构相互作用的现场分析工作很少。本文描述了周期结构内源(异常)近场和远场的精确数值计算方法。首先将该问题转化为无限人工源相控阵的数值模拟。对无限阵列场进行解析阵列扫描，得到所需的场解。文中给出了波纹平行板波导内的线源、介电带状光栅结构内的线源和人工周期衬底上的偶极子的例子来说明这种通用的数值方法。这项工作的贡献之一是确定了平面波到周期波的模式转换机制，并为二维或三维周期(光子带隙)介质中源的场论提供了基本的理解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010)

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