SU766034A1 - Frequency-manipulated signal shaper - Google Patents

Description

FIELD OF THE INVENTION The invention relates to radio, in particular, to systems of frequency radio wiring. A device for generating frequency-manipulated signals is known, comprising two stable frequency generators, the outputs of which are connected via frequency dividers to the information inputs of the keys, the control inputs of which are connected to the outputs of the control unit. However, the accuracy of the shape (the animated device is insufficient and due to the uncertainty of the phase relations of the characteristic frequencies at the time of their change. The purpose of the invention is to improve the accuracy of the frequency-manipulation of signals) signals. For this, a device for generating frequency-controlled signals, containing two stable frequency generators, the outputs of which are connected to information components of the KEYS, the control inputs of which are connected to the outputs of the control unit, a low-pass filter, a delayed pulse shaper, and a four-input element And , the inputs of which are connected to the outputs of the keys, and the output of the four-input EP & A & I is connected to the input of the low-pass filter and to the input of the control unit, additional inputs which are connected to the outputs of the | | delayed pulse generator, the inputs of the stable frequency generator & and the fault input (one of the frequency dividers, the input of the delayed pulse generator is connected to the fault code of the other dividers and the corresponding input of the control unit three consecutively connected ep & tape NOT, the outputs of which {1x are the outputs of the delayer {shunt) generator, whose input is the input of the first element HE, the control unit contains four flip-flops and an NOT element whose output is connected to the first inputs of the first and third flip-flops, and the first inputs of the second and fourth flip-flops are connected to the input NOT, which is the input of the control unit whose outputs are the triggers The triggers are additional inputs to the control unit.

The drawing shows a structural electrical circuit of the proposed; device to generate frequency-manipulated signals.

The proposed device contains a generator 1 and 2 stable frequencies, dividers 3 and 4 frequencies, keys 5-8, block 9. control, low-pass filter 10, shaper 11 delayed pulses, four-input element And 12, elements HE 13, 14 and 15, triggers 16-19, the element is NOT 2 O.

A device for generating frequency-manipulated signals operates as follows.

The input manipulated signal is fed to the driver 11, where it is inverted three times in succession by elements HE, 13, 14 and 15, each of which introduces a certain time delay in the process of signal conversion. The magnitude of the delay is not comparable .mo is small compared with the duration of the processed parcels. Generators 1 and 2 are triggered when they feed a specific potential circuit to their control circuits, for example a logic zero. Since the generators 1 and 2 are connected to the input circuit of the element 15 by the control circuits, one of them is in the working state at any given time. A change in the polarity of the manipulation signals leads to a change in the generated frequencies. Generators 1 and 2 are connected to dividers 3 and 4 frequencies, respectively, reducing the pulse frequency to the required values of the pressing and pressing frequencies, as well as improving the shape and stability of the generated oscillations. The zero setting circuits are connected with the HE elements 13 14 and 15 of the former 11, so that the dividers 3 and 4 start or stop functioning with a short time lead in comparison with the generators 1 and 2 connected to their inputs. the duration of each

SENDING the manipulation is one of the keys 5-8, from the output of which a sequence of pulses goes to the four-input element. AND 12, to the three other inputs of which logical units are received from the remaining private keys 5, 6, 7 or 8. Thus, at the output of the four-input element And 12 at any given moment passes pulse succession of pulses of one of the keys 5-8. Block 9 at the moments of changing the sign of the manipulation signal makes it possible to unlock one of the keys 5–8 by selecting the direct or inverse branch of the entering divider 3 or 4 and connecting this branch with the four-input element AND 12. Filter 1O is designed to convert the discrete frequency-controlled signal to analog signal.

The proposed device eliminates temporal distortions introduced into the often-manipulated signal during the & GO formation.

Claims (2)

1. A device for generating frequency-manipulated signals, containing two stable frequency generators, the outputs of which are connected via frequency dividers to the information inputs of the keys, the control inputs of which are connected to the outputs of the control unit, characterized in that, in order to improve the forging accuracy, a filter is introduced low-frequency generator, the delayed pulse shaper and the four-input element And, the inputs of which are connected to the outputs of the keys, and the output of the four-input element And connected to the input of the filter the lower parts m and to the input of the control unit, further inputs of which are connected to the output of the delayed pulse inputs stable frequency generators and reset input of a frequency divider, the input of the delayed pulse is coupled to reset input of another frequency divider and the respective input of the control unit. 2. Device pop. 1, is EXCELLENT with the fact that the delayed pulse shaper contains three. Subsequently "conveniently connected elements .NON, whose outputs are outputs (delayed pulse shaper, which input is the input of the first ep agent NOT. 3, A device according to claim 1, wherein the control unit contains four flip-flops and elite tapes NO, the output of which is connected to the first inputs of the first and third triggers, and the first inputs of the second and fourth triggers are connected to the input of the element HE, which is the input of the block control outputs of which are yo-pc trigger outputs, the second and third trigger inputs being additional inputs of the control unit. Sources of information taken into account in the examination 1. USSR author's certificate №467446, CP. H 03 SZ / OO //, NO4 /; 27 / OO, 1972 (prototype).