Features of Propagation of Surface Acoustic Waves in Two-Dimensional Phononic Crystals on the Surface of a Lithium Niobate Crystal

被引：4
|
作者：
Nikitov, S. A.
Grigor'evskii, A. V.
Grigor'evskii, V. I.
Kotelyanskii, I. M.
Luzanov, V. A.
Mirgorodskaya, E. N.
Suchkov, S. G.
机构：
来源：
JOURNAL OF COMMUNICATIONS TECHNOLOGY AND ELECTRONICS | 2011年 / 56卷 / 07期
基金：
俄罗斯基础研究基金会;
关键词：
BAND-GAP; PULSE;
D O I：
10.1134/S1064226911070126
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：
Two-dimensional phononic crystals are fabricated on the surface of a lithium niobate crystal. A numerical method is developed for calculating the frequency dependences of the transmission and reflection coefficients of a surface acoustic wave for a rectangular region with two-dimensional periodic structure on the surface of an elastic body. Measurements of the frequency dependences of the reflection and transmission coefficients are performed for propagation in the part of the lithium niobate crystal surface on which two-dimensional phononic crystals were fabricated. Forbidden zones are found in the transmission spectra of the waves transmitted through phononic crystals. It is shown that, if the width of the incident wave beam is less than the width of the region with the two-dimensional periodic structure (the two-dimensional phononic crystal), then a resonant increase in the transmission coefficient arises near the center of the rejection band.
引用
收藏
页码：888 / 899
页数：12
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