• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Photonics and Nanostructures: Fundamentals and Applications >Eight-channel acoustic demultiplexer based on solid-fluid phononic crystals with hollow cylinders
【24h】

Eight-channel acoustic demultiplexer based on solid-fluid phononic crystals with hollow cylinders

机译：基于带空肠柱晶体的八通道声学解复用器

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We design a novel eight-channel demultiplexer in a solid-fluid phononic crystal structure. The basic structure has been formed by square arrangement of holes filled by water in tungsten background. These holes are embedded in background with filling fraction of 46 %. Generally, the proposed structure consists of nine type line defects for input and output channels. These line defects consist of two types of hollow cylinders. One of them is used in input channel and the other creates output channels. Input waveguide contains an L-branch waveguide which has been made by a row of hollow cylinders of water which is internally filled with tungsten. Each of output channels contains a row of hollow cylinders of Methyl Nonafluorobutyl Ether filled with tungsten. Hollow cylinders have different inner radii in each output waveguides. Hence, each output channels can transmit diverse narrow frequency passbands. We use the finite element method to determine the eigenfrequencies of structure. This structure can separate eight acoustic waves in frequency range between 166.6 kHz and 168.1 kHz. Separation of frequencies is accomplished with high quality factor and the width of frequency spectra between outputs are about 200 Hz. Crosstalk values of the proposed structure show that the eight-channel demultiplexer has efficient performance so that, the worst case of crosstalk value is equal to -26.68 dB.
机译：我们在固体流体声晶结构中设计一种新型八通道多路分解器。基本结构是由钨背景中水填充的孔的正方形布置形成。这些孔嵌入背景中，填充分数为46％。通常，所提出的结构包括用于输入和输出通道的九种类型缺陷。这些线路缺陷由两种类型的空心圆柱组成。其中一个用于输入通道，另一个创建输出通道。输入波导包含L-分支波导，该L-分支波导是由一排的水的一排空心圆柱体制成，它们内部填充钨。输出通道中的每一个包含填充钨的甲基非氟丁基醚的一排空心圆柱。在每个输出波导中，中空圆柱体在每个输出波导中具有不同的内半径。因此，每个输出通道可以传输不同的窄频率通带。我们使用有限元方法来确定结构的特征频率。该结构可以将八个声波分离在166.6 kHz和168.1 kHz之间的频率范围内。使用高质量因子实现频率的分离，输出之间的频谱宽度约为200Hz。建议结构的串扰值表明，八通道多路分解器具有高效性能，使得串扰值的最坏情况等于-26.68 dB。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号