SU393690A1 - DEVICE FOR MEASURING FAST SIGNAL FLUCTUATION - Google Patents

Description

one

The invention relates to a radio measuring technique and can be used in the automated step-up systems for the frequency of highly stable generators.

Devices for measuring fast fluctuating signals are known, containing a series-connected signal source, a sectioned delay line, a phase detector, a low-pass filter and a recording device, with the output voltage of the next voltage connected to one of the phase detector inputs directly, and to the second - through a partitioned delay line. The principle of their operation is based on the absolute OM or relative HQiM increase in fluctuations to a value that can be distinguished by modern indicators.

It is a disadvantage; the known devices are low: the resolution is due to fluctuations in the delay time in the delay line.

The purpose of the invention is to increase the resolution of onability and accuracy of measurements.

For ET01GO between the source output of the signal under study and the input of the delay line are additionally connected in series the comparator and the frequency multiplier.

Ia drawing | WI1 presented a functional diagram of the predremotomoto device.

It contains a two-channel "omtarator / with a single frequency conversion,

multiplier 2 with a small multiplier, partitioned delay line 3 phase detector 4, low pass filter 5. A two-channel comparator / contains a mixer 6, a multiplier 7, an amplifier 8 and a crystal oscillator 9.

The circuit includes a recording device 10.

The device works as follows.

The quasi-harmonic signals with frequencies Wi and Wz, representing the random process under study, are fed to the input of a two-channel comparator L The signal under investigation with the overclocked error received at the comparator output is additionally multiplied by multiplier 2. From the output of the multiplier 2, the signal is not sent to phase detector 4, the signals from one of the multipliers 2 go to one input of the phase detector, and a sectioned delay line 3 goes to the other INPUT. From the output of the phase detector 4, the signal goes to the registering device, 10 No low pass filter 5.

The sectioned delay line 5 consists of three sections with a Tzad of 60-100 micron / s matching transistor amplifiers providing a constant coefficient equal to one, non-differential factor, and using any number of the existing sections. The delay time varies discretely depending on the expected fluctuations of the quasi-γ-harmonic sial under investigation. Object of the Invention A device for measuring fast signal fluctuations, containing successively the source of an output signal, a partitioned delayed livia, a phase detector, an low pass filter and a recording device, directly outputting the source of the voltage under investigation and connecting to one of the phase detector inputs, one to the second, through a partitioned delay line, characterized in that, in order to increase the resolution and measurement accuracy, between the output of the source, signal and the inputs of the delay line are additionally connected in series with a serial controller and frequency multiplier.