Equivalent four-port networks for series connected SAW-IDT and their application

T. Kojima, N. Kawai, H. Obara
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引用次数: 5

Abstract

We have developed the new equivalent four-port network of an N-pair of IDT for electric series connection of IDTs. From this equivalent circuit, we have derived the four-port transfer matrix, which is very useful for the analysis of the SAW devices using series connected IDTs. As a practically useful example, we have analyzed the one-port SAW resonator using connected IDTs. Finally, by numerical calculation, resonance characteristics of this type of resonators on LiNbO/sub 3/ (128/spl deg/ Y,X) are investigated.
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串联SAW-IDT等效四端口网络及其应用
我们开发了一种新的n对IDT等效四端口网络,用于IDT的电气串联连接。从这个等效电路中,我们推导出了四端口传输矩阵,这对于使用串联idt的SAW器件的分析非常有用。作为一个实际有用的例子,我们分析了使用连接的idt的单端口SAW谐振器。最后,通过数值计算,研究了这类谐振器在LiNbO/sub 3/ (128/spl度/ Y,X)上的谐振特性。
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