| SAW滤波器等效电路模型参数的精确计算法 |
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| 引用本文： | 杨朝斌,徐继麟,黄香馥.SAW滤波器等效电路模型参数的精确计算法[J].电子科技大学学报(社会科学版),1997(1). |
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| 作者姓名： | 杨朝斌 徐继麟 黄香馥 |
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| 作者单位： | 电子科技大电子工程系 |
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| 摘 要： | 基于声表面波滤波器中叉指换能器（ＩＤＴ）上电荷分布特性，结合优化设计的叉指加权系数及加权模式，推导出了ＳＡＷ滤波器等效电路模型参数的精确计算方法。其计算表达式仅由加权系数，叉指间相互位置及电荷分布决定。模拟结果表明此算法精确、简便有效
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| 关 键 词： | 声表面波 叉指换能器 等效电路模型 电荷分布 优化 |
Precise Computation of SAW Filter Equivalent Circuit Model Parameters |
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| Yang Chaobin,Xu Jilin,Huang Xiangfu.Precise Computation of SAW Filter Equivalent Circuit Model Parameters[J].Journal of University of Electronic Science and Technology of China(Social Sciences Edition),1997(1). |
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| Authors: | Yang Chaobin Xu Jilin Huang Xiangfu |
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| Abstract: | An effcient algorithm to compute the equivalent circuit model parameters of SAW filter is proposed.This method is based on the charge distribution in the interdigital transducer calculated by the Remez optimazation design and takes into account the interaction of acoustic wave and electrostatic field within the IDTs.The parameters are only depended on the charge distribution,weighted coefficients and IDT overlap pattern.The simulations prove that this method is simple,precise,and fast,and can be used to optimize further practical specfication of SAW filter. |
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| Keywords: | surface acoustic wave interdigital trangducer equivalent circuit model charge distribution optimum |
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