SU372671A1 - DEVICE FOR THE FORMATION OF HIGHLY STABLE PHASOMANIPULATED VIBRATIONS - Google Patents

Description

I

The invention relates to a pulse technique. The device can be used in phase communication systems, in radio telemetry, in radiolocation.

A device for forming highly stable phase-mapped oscillations is known, comprising a reference oscillator with dividers, connected via a phase detector and a frequency filter with a synchronized oscillator.

The purpose of the article is to increase the stability of the formation of phase-shifted oscillations.

The proposed device is characterized in that an adjustable element of the time delay of the pulse signals is connected between the output of the divider and the phase detector, the second input of which is connected to the input of the divider, and the third input is connected to | coding unit.

The drawing shows a block diagram of the proposed device.

The device contains a reference generator /, forming devices 2 to 3, frequency dividers 4 and 5, an adjustable element 6 of the time delay of the pulse signals, a phase detector 7, a frequency filter 8, a synchronizing generator 9 with a controlling element 10, a coding block //.

Harmonic signal highly stable

reference generator / is fed to the forming device 2, from the output of which the pulse sequence with the frequency coog is fed to the frequency divider 4. From the output of the divider 4, the pulse sequence

with frequency -, where ki is the coefficient of delfti

neither divider is fed to the input controlled by the coding unit // adjustable element 6 of the time delay of the pulse signals, delaying each pulse of the input sequence by the time Gzad. The impulse sequence thus obtained falls. to one input of the phase detector 7. At its other input is a sequence with a frequency

-, obtained by converting the ckz

a mono signal of a synchronized generator 9 with a frequency coog in the process of passing through a shaping device 3 and a frequency divider 5 with a division factor kz.

The phase detector 7 generates a pulse, the leading edge of which is obtained by the action of the leading edge of the pulse from the pulse sequence of the channel of the rear support — airborne generator

This means that the duration t of each pulse at the detector output contains information on the temporal (phase) ratios of the pulse sequences arriving at its inputs. The constant component of the pulse sequence at the output of the low-pass filter 8 carries information about the duration t, i.e., the phase mismatch of the reference oscillator / and the synchronized oscillator 9, and is used as a signal that affects the control element 10 ( the reactance of which is a function of the applied voltage of the synchronized generator, controls its phase. The oscillation phase of the synchronized generator in this case changes according to the law of control by the coding unit // of the adjustable element 6 of the time delay of the pulse signals. Thus, the transmitted information embedded in the control function is transformed into the law of change of the phase of the synchronized generator. The stability of the manipulation index and the frequency of the phase-shifted oscillations obtained in the proposed device is mainly determined by the stability of the reference and synchronized generators and the delay time. Gzad. Object of the Invention A device for forming highly stable phase-shift manipulated oscillations, comprising a reference generator with dividers, connected via a phase detector and a low-pass filter with a synchronized generator, characterized in that, in order to increase the stability of the formation of phase-shifted oscillations, an adjustable element is included between the output of the phase-shifter the time delay of the pulse signals, the second input of which is connected to the input of the divider, and the encoder block is connected to the third input ovan.