SU1561188A1 - Device for recovery of input analog signal - Google Patents

Abstract

The invention relates to radio engineering and is intended for use in equipment for various purposes in the processing of both pulsed and analog signals. The purpose of the invention is to expand the field of application by providing work with input signals of any shape and polarity. To do this, the device containing the sampling element 1, the filtering element 4, the reference pulse generator 5, the delay element 6 and the conversion and summing device 7, additionally introduced a series-connected discrete signal amplification element 2 and the phase-sensitive demodulation element 3, and the summation is made in the form of a serially connected second sampling element 8, a second discrete signal amplifying element 9, a second phase-sensitive demodulation element 10, and an element 11 is the summation. This circuit construction allows for double conversion of input signals of various shapes and polarities, in the structure of which there are interferences, followed by the addition of discrete components of these transformations, having a phase shift between them, which eliminates the interference in the information structure of the input signal . 2 Il.

Description

which is the first input under the influence of interference is of the form 13.

The second element 8 sampling, Connected on the second input to the second input of the second element 10 phase-sensitive demodulation and the output element 6 time delay

The first sampling element 1 is designed to convert a continuous input analog signal to discrete.

The first element 2 amplification of discrete signals is used to compensate for losses in the path of passage and convert the input analog signal.

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The analog signal 13 arriving at the first input of the first element 1 of discretization, with the arrival of 5 reference pulses 15 from the generator, discretizes and from its output enters the input of the first element 2 of the amplification of discrete signals in the form of a discrete sequence 14 attenuated in amplitude. From the output of the first element 2 Amplification of discrete signals Amplified discrete signal 16 is fed to the first input of the first element 3 of phase-sensitive demodulation. C when moving to its second pulse input I3

under the influence of interference is of the form 13.

The analog signal 13 arriving at the first input of the first element 1 of discretization, with the arrival of 5 reference pulses 15 from the generator, discretizes and from its output enters the input of the first element 2 of the amplification of discrete signals in the form of a discrete sequence 14 attenuated in amplitude. From the output of the first element 2 Amplification of discrete signals Amplified discrete signal 16 is fed to the first input of the first element 3 of phase-sensitive demodulation. With the arrival of its second input pulses I3

e15

from the output of the generator 5, a discrete signal 17 is formed at its output (with the phase relations preserved in the input signal 13), which is then fed to the input of the filtering element 4, where a low-frequency selection occurs, which results in the output of its signal 18 at its output 4 filtering signal 18 is fed to the first input of the second sampling element 8, the second input of which simultaneously receives pulses 19, delayed by element 6 of the time delay at the half-period of the pulse frequency 15 from the output a generator 5 of reference pulses, under the influence of which a discrete signal 20 is generated at the output of the second sampling element 8, which is fed to the input of the second amplifying element 9 of discrete signals. The amplified discrete signal 21 is fed to the first input of the second I0 element of phase-sensitive demodulation, the second input of which simultaneously receives the signal 19 from the output of the time delay element 6 As a result of the interaction of the two signals, a signal 22 is formed that preserves the phase relations of the input signal 21 "Discretization" These signals 22 and 17 simultaneously arrive at the first and second inputs of the AND element, summing up, adding these two signals, as a result of which a resultant signal 23 is yuschiys signal output device "

Experimental studies of the proposed device showed that with input signals of various shapes and polarities, in the structure of which there are interferences that overlap the envelope of the main signal, the device doubles the input signal and then adds the discrete components of these transformations that have phase shift, which eliminates interference in the signal without destroying the information structure of the input signal

The device can be used when working with input signals of any shape and polarity, more effectively eliminates amplitude and information losses when processing input signals886

fishing, t „e. significantly improves the quality of the processed information, simplifies the design, since the elemental composition of the proposed device is no more than 50% of the total number of elements of a known device, which evenly doubles the reliability of the device and significantly (by 40%) reduces its energy consumption

Claims (1)

Invention Formula A device for restoring an input analog signal that contains a sampling element connected via the first input to the input bus of the device, and via the second input to the output of the reference pulse generator and the input of the time delay element, a filtering element connected to the input and output respectively to the first and second inputs of the device conversion and summation, the third input of which is connected to the output of the time delay element, and the output to the output bus, characterized in that, in order to expand the field of application of In order to work with input signals of any shape and polarity while simplifying, the first amplified element of discrete signals, the input of which is connected to the output of the first sampling element, and the first phase-sensitive demodulation element, the second input of which is connected to the output, are introduced into it. reference pulse generator, and the output is with the input of the filtering element, the conversion and summation device is made in the form of a second sample element connected in series, v the discrete signal amplification element, the second phase-sensitive demodulation element, and the sum element, the first and second inputs of the conversion and summing device being the second input of the summation element and the first input of the second sampling element, respectively, the second inputs of the second sampling element and the second phase element sensitive demodulation interconnected and connected to the output of the time delay element. ---- JiruinflnimrmjijmminnnniuuinrL liishllshggllllstlshshshsch. L LtflJk iIk FIG. 2