DEVICE FOR DOUBLE-PROBE MEASUREMENT OF PHASE SHIFTS OF DISTRIBUTED RC-STRUCTURE Russian patent published in 2019 - IPC G01R25/02 

FIELD: measuring equipment.

SUBSTANCE: invention can be used to estimate electrophysical characteristics of media described by a model of distributed RC-structures. Disclosed is a device for double-probe measurement of phase shifts of a distributed RC structure, into which operational amplifier (5) is inserted, an inverted input of which is connected to one probe (4) and through a first resistor (R1) – with its output and a signal input of phase-sensitive element (6), which output is connected to analogue-to-digital converter (ADC) 7 input. PC output (9) is connected to the control input of generator (1), the output of which is connected to other probe (3) and the reference input of phase-sensitive element (6). Both probes are connected to the distributed RC structure (2) used as the measured device; non-inverting input of operational amplifier (5) through second resistor (R2) is connected to common bus.

EFFECT: high accuracy of measuring electrophysical parameters of a distributed RC structure, simplifying and accelerating the measurement process.

1 cl, 2 dwg