Patent ID: 11894831
Assignee: MURATA MANUFACTURING CO., LTD.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A resonance device comprising:
a resonator including three or more upper electrodes, a lower electrode, and a piezoelectric film disposed between the three or more upper electrodes and the lower electrode;
a substrate constructed to have a first surface that faces the three or more upper electrodes of the resonator;
a first power supply terminal disposed on a second surface of the substrate opposite the first surface, with the first power supply terminal being electrically connected to a first upper electrode of the three or more upper electrodes;
a second power supply terminal disposed on the second surface and electrically connected to a second upper electrode of the three or more upper electrodes other than the first upper electrode connected to the first power supply terminal; and
a ground terminal disposed on the second surface and electrically connected to the lower electrode,
wherein respective areas of the first and second power supply terminals are different from each other, such that a capacitance formed between the first power supply terminal and the ground terminal is approximately equal to a capacitance formed between the second power supply terminal and the ground terminal.