Enhanced Sound Beam from a Sonic Crystal Waveguide via a Self-Collimating Sonic Crystal

Q1 Mathematics

Journal of Computational Acoustics Pub Date : 2017-03-16 DOI:10.1142/S0218396X17500242

Jinfu Liang, Lun-Xun Gong

引用次数: 0

Abstract

Two novel composite structures that couple a sonic crystal waveguide (SCW) to a self-collimating sonic crystal (SCSC) are proposed to control beam divergence and transmission. Finite element simulations indicate that an SCSC attached to the output of an SCW can reduce the half-power angular width by 48.81% and enhance the normal radiation intensity by 104.17%. This is due to both the high self-collimation properties and low interference of SCSCs. A composite consisting of four SCWs coupled via an SCSC exhibits high transmission with low cross talk when multiple signals are introduced. The proposed composites could be important in the SCW directional emission and SCW-based integrated circuit development.

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自准直声波晶体增强声波晶体波导的声束

提出了两种新型的复合结构，将声波晶体波导（SCW）耦合到自准直声波晶体（SCSC）上，以控制光束的发散和传输。有限元模拟表明，连接到SCW输出端的SCSC可以将半功率角宽度减小48.81%，并将正常辐射强度提高104.17%。这是由于SCSC具有高自准直特性和低干扰。当引入多个信号时，由经由SCSC耦合的四个SCW组成的复合物表现出具有低串扰的高传输。所提出的复合材料可能在SCW定向发射和基于SCW的集成电路开发中具有重要意义。

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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来源期刊

Journal of Computational Acoustics 物理-声学

CiteScore

3.90

自引率

0.00%

发文量

审稿时长

4.5 months

期刊介绍： Currently known as Journal of Theoretical and Computational Acoustics (JTCA).The aim of this journal is to provide an international forum for the dissemination of the state-of-the-art information in the field of Computational Acoustics. Topics covered by this journal include research and tutorial contributions in OCEAN ACOUSTICS (a subject of active research in relation with sonar detection and the design of noiseless ships), SEISMO-ACOUSTICS (of concern to earthquake science and engineering, and also to those doing underground prospection like searching for petroleum), AEROACOUSTICS (which includes the analysis of noise created by aircraft), COMPUTATIONAL METHODS, and SUPERCOMPUTING. In addition to the traditional issues and problems in computational methods, the journal also considers theoretical research acoustics papers which lead to large-scale scientific computations. The journal strives to be flexible in the type of high quality papers it publishes and their format. Equally desirable are Full papers, which should be complete and relatively self-contained original contributions with an introduction that can be understood by the broad computational acoustics community. Both rigorous and heuristic styles are acceptable. Of particular interest are papers about new areas of research in which other than strictly computational arguments may be important in establishing a basis for further developments. Tutorial review papers, covering some of the important issues in Computational Mathematical Methods, Scientific Computing, and their applications. Short notes, which present specific new results and techniques in a brief communication. The journal will occasionally publish significant contributions which are larger than the usual format for regular papers. Special issues which report results of high quality workshops in related areas and monographs of significant contributions in the Series of Computational Acoustics will also be published.