Abstract
Several new materials for SAW devices exhibit the natural SPUDT (N-SPUDT) effect, which causes an SAW transducer to generate waves with different amplitudes in the two directions. In general, SAW devices on such materials need to be designed allowing for the complications introduced by this effect. A design method for one-port resonators is derived, valid if the resonance frequency and the Bragg frequencies of the transducer and gratings are all different. The design is versatile enough to remain valid if the N-SPUDT effect is absent.
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