| 摘要 |
PROBLEM TO BE SOLVED: To provide a compact and inexpensive galvanic isolator capable of operating at 100 Mbit/s speed and higher. SOLUTION: Embodiments of the acoustic galvanic isolator comprise a carrier signal source, a modulator connected to receive an information signal and the carrier signal, a demodulator, and an electrically-isolating acoustic coupler connected between the modulator and the demodulator. The acoustic coupler comprises no more than one decoupled stacked bulk acoustic resonator (DSBAR). An electrically-isolating acoustic coupler based on a single DSBAR is physically small and is inexpensive to fabricate yet is capable of acoustically coupling information signals having data rates in excess of 100 Mbit/s and has a substantial breakdown voltage between its inputs and its outputs. COPYRIGHT: (C)2007,JPO&INPIT
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