DISCRETE-ANALOGUE LOW-PASS ARCS-FILTER WITH TWO ELECTRONIC SWITCHES Russian patent published in 2024 - IPC H03H19/00 

FIELD: radio engineering.

SUBSTANCE: invention relates to radio engineering and can be used to select given signal spectra. Result is provided due to the additional introduction into the DAF circuit of a multidifferential operational amplifier with two input ports, wherein the inverting input of the first port is connected to the output of the multidifferential operational amplifier, non-inverting input of the first port is connected to the output of the device, the inverting input of the second port is connected to the common power supply bus, and second port non-inverting input is connected to device input, output of the multidifferential operational amplifier is connected to the inverting input of the differential operational amplifier through the series-connected first frequency setting resistor, the first and second electronic switches and the second frequency setting one, wherein the common unit of the series-connected first electronic switch and the second frequency-setting resistor is connected to the common power supply bus through the second frequency-setting capacitor.

EFFECT: creation of a discrete-analogue filter (DAF) with two switched resistors and two electronic switches, which are controlled by one sequence of control pulses.

1 cl, 7 dwg