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Reflective array modeling for reflective and directional SAW transducers

机译:反射和定向SAW换能器的反射阵列建模

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摘要

This paper presents a new approximate method for analyzing reflective SAW transducers, with much of the convenience of the coupled-mode (COM) method but with better accuracy. Transduction accuracy is obtained by incorporating the accurate electrostatic solution, giving for example correct harmonics, and allowance for electrode width variation, in a simple manner. Results are shown for a single-electrode transducer, Natural SPUDT and DART SPUDT, each using theoretically derived parameters. In contrast to the COM, the RAM can give accurate results for short or withdrawal-weighted transducers and for wide analysis bandwidth.
机译:本文提出了一种新的近似方法,用于分析反射式声表面波换能器,它具有耦合模式(COM)方法的许多便利,但精度更高。通过以简单的方式并入准确的静电溶液(例如给出正确的谐波)和允许电极宽度变化,可以获得转换精度。显示了单电极换能器Natural SPUDT和DART SPUDT的结果,均使用理论上得出的参数。与COM相比,RAM可以为短或撤回加权换能器以及较宽的分析带宽提供准确的结果。

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