FIELD: physics; radio.
SUBSTANCE: invention can be used in radio electronics. The multiple band-pass active piezoelectric filter contains a first and a second inverting operational amplifier, each of which has a resistive negative feedback, a first group consisting of N piezoelectric resonators, first leads of which are connected to the input potential terminal of the device, and second leads through N resistors to the input of the first operational amplifier, a second group consisting of N piezoelectric resonators, the first leads of which are connected to the input potential terminal of the device, and second leads through N resistors to the input of the second operational amplifier, the output of the second operational amplifier is connected through a resistor to the input of the first operational amplifier, and the output of the first operational amplifier is connected to the output potential terminal of the device.
EFFECT: quality operation of the filter with a simple circuit design.
1 dwg
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