Resonator structure and a filter comprising such a resonator structure
作者： Juha Ellä , Markku Ylilammi , Jyrki Kaitila
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摘要: A resonator structure (1200, 1300, 1400), where a certain wave mode is piezoelectrically excitable, comprises at least two conductor layers (110, 120) and one piezoelectric layer (110) in between the layers, said extending over first area of structure, which excitable structure. The characterized that it frame-like zone (2, 4) confining center (3) within area, cut-off frequency excited different from width acoustical properties are arranged so displacement relating to strongest resonance substantially uniform resonator.
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