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RESONATOR CIRCUIT HAVING REDUCED EFFECTS OF PARASITIC FEED-THROUGH CAPACITANCE
RESONATOR CIRCUIT HAVING REDUCED EFFECTS OF PARASITIC FEED-THROUGH CAPACITANCE
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机译:谐振电路减小了寄生馈通电容的影响
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摘要
Parasitic feed-through capacitance effects in a resonator circuit are reduced by separating the resonator signal from the feed-through capacitance signal and then detecting the resonator signal with comparator circuitry. In specific embodiments, the separation of the resonator signal from the feed-through capacitance signal is effected by serial integrator and differentiator circuitry or by trans-impedance amplifier circuitry. The comparator circuitry can include control/delay circuitry for enabling the comparator at a correct time when feed-through capacitance signal has dissipated. The invention can be implemented using microelectromechanical sensors (MEMS) in a strain gauge function.
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