SU1136620A1 - Device for measurement of noise characteristics - Google Patents

Abstract

FIELD: radio engineering. SUBSTANCE: device has first, second and third delay gates, first, second and third averaging units, first and second joining units, first and second dividing units, and unit for square root calculation. Input of first delay gate and first inputs of first joining unit and complex multiplier are connected. Input of second delay gate and second inputs of first joining unit and complex multiplier are connected. First output of complex multiplier is connected through first averaging unit to first input of first dividing unit. Second output of complex multiplier is connected to input of second averaging unit. Output of first joining unit is connected to first input of second dividing unit through third averaging unit. Outputs of first and second averaging units are connected respectively to first and second inputs of second joining unit, which output is connected through square root calculation unit to second input of second dividing unit. Goal of invention is achieved by complex conjugation unit, additional complex multiplier, third dividing unit and fourth delay gate. Outputs of first and second delay gates are connected respectively to first and second inputs of complex conjugation unit, which first and second outputs are connected respectively to third and fourth inputs of complex multiplier. Output of second averaging unit is connected to first input of third dividing unit. First and second outputs of additional complex multiplier are connected to its first and second inputs respectively through third and fourth delay gates. Output of square root calculation unit is connected to second inputs of first and third dividing units, which outputs are connected to respectively to third and fourth inputs of additional complex multiplier. EFFECT: increased precision of measurement.