Acoustic galvanic isolator incorporating single decoupled stacked bulk acoustic resonator
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United States of America Patent
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Mar 9, 2010
Grant Date -
Apr 26, 2007
app pub date -
Oct 18, 2005
filing date -
Oct 18, 2005
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Abstract
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 passing information signals having data rates in excess of 100 Mbit/s and has a substantial breakdown voltage between its inputs and its outputs.
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