FIELD: radio measurements, possible use during control of various UHF quadripoles containing frequency transformation.
SUBSTANCE: to measure amplitude-frequency and phase-frequency characteristics is suggested to complement the device for measuring amplitude-frequency and phase-frequency characteristics of quadripoles additionally with controllable attenuator, auto-balance thermo-resistor bridge of alternating current, consisting of resonance amplifier and resistor bridge, one shoulder of which includes heat-variable resistor, standard power source, amplitude detector, subtraction circuit, two controllable switches, double RC-circuit, consisting of two resistors and a capacitor, and their control circuit.
EFFECT: expanded measuring capabilities of device and increased precision of measurement due to stabilization of absolute value of heterodyne power and its possible adjustment in each frequency point.
3 cl, 1 dwg
