DEVICE FOR MEASURING RELATIVE FREQUENCY-RESPONSE CHARACTERISTICS Russian patent published in 2008 - IPC G01R27/28 

FIELD: physics.

SUBSTANCE: proposed measuring device comprises a sweep-frequency generator (SFG) 1, measured object (MO) 2, amplitude detector (AD) 3, divider (DV) 4, reference signal generator (RSG) 5, indicator (I) 6, frequency-to-voltage converter (FVC) 7, differentiator (DF) 8, comparator (CM) 9, scaling amplifier (SA) 14, amplitude selector (AS) 15, time selector (TS) 16, decade counter (DC) 17, and a second decoder (SD) 18. Reference signal generator 5 comprises a frequency to code converter (FCC) 11, first decoder (FD) 12 and a storage and selection unit (SSU) 13. The measuring device also has a commutator (CM) 10, second amplitude selector (SAS) 19, second divider (SD) 20, second differentiator (SD) 21, third differentiator (TD) 22, first inverter (FI) 23, second inverter (SI) 24, second time selector (TS) 25, third time selector (TS) 26, bidirectional counter (BC) 27, third inverter (IV) 28, second comparator (CP) 29, switch (S) 30 and a fourth differentiator (DF) 31.

EFFECT: increased accuracy of measuring frequency-response characteristics.

6 dwg