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Differences in resonant frequencies of a 2-DoF mechanically coupled BAW square resonator system operated at different vibrational modes obtained by FEM simulation in COMSOL.
| Vibrational Modes | In-Phase Mode (Hz) | Out-of-Phase Mode (Hz) | Frequency Difference |
|---|---|---|---|
| Mode 1 | 381,093.019 | 411,584.939 | 8% |
| Mode 2 (WG mode) | 4,711,448.66 | 4,746,444.54 | 0.74% |
