FIELD: radio equipment.
SUBSTANCE: invention relates to radio engineering, as well as measurement equipment, and can be used, for example, as spectrum limiters connected at the input of analogue-to-digital converters for various purposes. A universal active RC-filter based on multi-differential operational amplifiers having two input ports, each having capacitors, resistors and a voltage repeater, connected to each other such that a filter provides for obtaining at the outputs of a full set of amplitude-frequency characteristics (AFC), LPF, HPF, BPF, BRF characteristics, as well as independent pole Q-factor adjustment AFC, at which transmission coefficient and pole frequency AFC, which depend on other parameters of elements, remain constant.
EFFECT: technical result consists in improvement of adjustment characteristics range.
11 cl, 17 dwg, 1 tbl
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