计算物理 ›› 2011, Vol. 28 ›› Issue (2): 301-305.

• 论文 • 上一篇    下一篇

固-流结构矩形掺杂声子晶体的滤波特性

刘启能   

  1. 重庆工商大学, 计算机科学与信息工程学院, 重庆 400067
  • 收稿日期:2009-12-30 修回日期:2010-07-09 出版日期:2011-03-25 发布日期:2011-03-25
  • 作者简介:刘启能(1957-),男,四川泸洲,教授,从事光学与应用声学研究.
  • 基金资助:
    重庆市教委科技项目基金(批准号:KJ100717)资助项目

Filtering Features of Solid-Fluid Rectangular Doping Phononic Crystals

LIU Qineng   

  1. Computer Science and Information Engineering College, Chongqing Technology and Business University, Chongqing 400067, China
  • Received:2009-12-30 Revised:2010-07-09 Online:2011-03-25 Published:2011-03-25

摘要: 利用一维固-流结构矩形掺杂声子晶体中弹性波横向受限的条件,推导出弹性波在一维固-流结构矩形掺杂声子晶体中各个模式满足的关系式.研究弹性波各模式的缺陷模随模式量子数和杂质厚度的变化规律.利用缺陷模随模式量子数的变化规律可以实现多通道滤波,利用缺陷模随杂质厚度的变化规律可以实现调谐滤波.

关键词: 矩形声子晶体, 弹性波, 受限, 滤波

Abstract: Mode condition of elastic wave in solid-fluid rectangular doping phononic crystals is obtained with restriction conditions of elastic wave.Response of defect mode to mode quantum number and length of rectangle are calculated.Multichannel filters are realizated with relationship of defect mode and mode quantum number.Harmonious filters are obtained as defect mode varies with mode length of rectangle.

Key words: rectangular phononic crystal, elastic wave, restrictions, filter

中图分类号: