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公开(公告)号：US20250158594A1
公开(公告)日：2025-05-15
申请号：US19023847
申请日：2025-01-16
Applicant: Huawei Technologies co., Ltd.
Inventor： Ventsislav Yantchev
Abstract: Embodiments of the invention relate to an acoustic resonator device for excitation of bulk acoustic waves (BAW) with enhanced power handling capabilities. The acoustic resonator device has a composite piezoelectrical platelet which comprises a first piezoelectrical layer and a second piezoelectric layer with the same or similar acoustic impedance but with opposite phase wave excitation for a given wave polarization. The dimensions of the composite piezoelectrical platelet for a given static capacitance can hence be increased, while maintaining a wide bandwidth of the acoustic resonator device.
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