FIELD: physics.
SUBSTANCE: invention relates to means of extracting a predetermined spectrum of a signal source, e.g. during further processing by analogue-to-digital converters of various modifications. Result is achieved by adjusting pole frequency by changing resistance of second and third resistors, setting attenuation of pole by changing resistances of first and fourth or sixth resistors, setting transmission coefficient M by changing resistance of fifth resistor.
EFFECT: technical result consists in providing band-pass filter with lower parametric sensitivity with independent adjustment of three main parameters of AFC – frequency of pole (ωs), attenuation of pole (ds), as well as transmission coefficient in pass band (M).
1 cl, 5 dwg
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