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SUPPRESSION OF TRANSVERSE MODE SPURIOUS SIGNALS IN SURFACE ACOUSTIC WAVE DEVICES UTILIZING A GAP HAMMER STRUCTURE
SUPPRESSION OF TRANSVERSE MODE SPURIOUS SIGNALS IN SURFACE ACOUSTIC WAVE DEVICES UTILIZING A GAP HAMMER STRUCTURE
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机译:间隙锤结构抑制表面声波器件中的横向模式虚假信号
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摘要
An acoustic wave device comprises a substrate including a piezoelectric material, and interdigital transducer (IDT) electrodes disposed on a surface of the substrate. The IDT electrodes have gap regions, edge regions, and center regions. A maximum width of the IDT electrodes in the gap regions is greater than the maximum width of the IDT electrodes in the edge regions, thereby achieving a velocity of an acoustic wave in the gap regions being greater than the velocity of the acoustic wave in the center regions, and the velocity of the acoustic wave in the center regions being greater than the velocity of the acoustic wave in the edge regions.
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