| 宽带SAW-IDT衍射分析 |
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| 引用本文： | 杨朝斌,周先敏,黄香馥.宽带SAW-IDT衍射分析[J].电子科技大学学报(社会科学版),1997(3). |
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| 作者姓名： | 杨朝斌 周先敏 黄香馥 |
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| 作者单位： | 电子科技大学电子工程系 |
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| 摘 要： | 在比较了现有分析声表面波（ＳＡＷ）叉指换能器（ＩＤＴ）衍射的各种方法后，提出了一种新方法，它直接从产生ＳＡＷ的ＩＤＴ上电荷分布出发，结合波传播特性及压电材料的各向异性，推导出了严格的ＳＡＷ波角谱表达式，再转化为时域脉冲响应，在频域对衍射的影响进行了宽带分析。对实际ＳＡＷ滤波器模拟计算表明，本算法精确简便，在频域与传播范围上皆具宽带特性
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| 关 键 词： | 声表面波 叉指换能器 衍射 波角谱 脉冲响应 |
Broadband Analysis of Diffraction in SAW IDT |
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| Yang Chaobin,Zhou Xianmin,Huang Xiangfu.Broadband Analysis of Diffraction in SAW IDT[J].Journal of University of Electronic Science and Technology of China(Social Sciences Edition),1997(3). |
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| Authors: | Yang Chaobin Zhou Xianmin Huang Xiangfu |
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| Abstract: | After comparing the existing techniques of diffraction analysis of SAW IDT,this paper presents a new broadband analysis method.Begining with the charge distribution and Green function,this paper derivates the rigorous angular spectrum of wave and impulse response model,the substrate anisotropy and propagation character are included,and the broadband analysis of diffraction in frequency domain is given.The simulation proves that this method is very precise and can be used in design and compensation of high performance wideband SAW filters. |
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| Keywords: | acoustic surface wave interdigital tranducers diffraction angular spectrum of wave pulse response |
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