Wave Devices

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Summary of the Invention A multidomain plate acoustic device is provided having one or more single piezoelectric crytalline plates with differently polarized ferroelectric domains, where the domains have diverse directions of their axes of polarization. The device may consist of multidomain plate acoustic wave transducer, a multidomain plate acoustic wave delay line, a multidomain plate acoustic wave rf filter, an any combination thereof. The differently polarized ferroelectric domains may comprise a collection of inversely or differentl poled ferroelectric domains within a single piezoelectric medium. The medium may be crystalline or ceramic plate with non-zero peizoelectric properties, in which the domains are created and embedded. In varying embodiments, the device includes electrodes oriented to generate a external rf field in various, respective directions, including in a directiona paralled to a length or a width of the device.