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- W2131921873 abstract "Our paper describes the modeling of finite, aperiodic SAW transducers of arbitrary polarity sequence and phasing in the presence of reflections caused by field shorting and mass loading. Electrostatic interactions are described by a chargepotential interrelation (CPI) matrix, and the coupling to surface waves by a mixed nodal impedance/scattering (MNIS) formalism which completely accounts for electroacoustic interactions within the transducer. Starting with the solution of the electrostatic problem, we compute the acoustically induced charge distribution, the excited SAW, and the reflection coefficient, input conductance and susceptance of the IDT. The susceptance is obtained directly without the need of a Hilbert transform. By exploiting special properties of the CPI and MNIS matrices, we present an algorithm whose computer time and memory requirements increase only linearly with the finger count of the IDT. As an example, the Hanma-Hunsinger singlephase unidirectional transducer (SPUDT) configuration is analyzed and its tripletransit suppression performance evaluated. This SPUDT is of particular interest because it requires no extra metallization step." @default.
- W2131921873 created "2016-06-24" @default.
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- W2131921873 date "1985-01-01" @default.
- W2131921873 modified "2023-09-27" @default.
- W2131921873 title "Efficient Modeling of Transduction and Reflection Properties of Finite Aperiodic SAW Transducers" @default.
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- W2131921873 doi "https://doi.org/10.1109/ultsym.1985.198481" @default.
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