SU924837A1 - Radio pulse generator (its versions) - Google Patents

Description

(54) GENERATOR OF RADIO IMPULSES (ITS OPTIONS)

one

This invention relates to a test technique.

A radio pulse shaper is known, comprising a modulator, a power amplifier, a series-connected master oscillator, a high-frequency amplifier, a coupling capacitor, a filter, an integrator, and a reactive modulator 1}.

The disadvantage of this former is low stability.

The closest to the technical entity proposed is a radio pulse generator, containing a standard signal generator, one output of which is connected to the first input of the output driver, and the other through serially connected amplifier and amplitude limiter, and a pulse generator, connected to the second input of the output shaper, the synchronization input is connected to the output of the clock shaper, the decoder-switch, the input of which It is connected to the output of the reset even device and a reset pulse shaper, the input of which is connected to the output of the switch decoder, and the output connected to the input of the clock pulse generator 23.

This generator does not provide a signal with sufficient stability of the initial phase.

The purpose of the invention is to increase the stability of the initial phase of the fill signal and reliability.

The supplied circuit is achieved by the fact that a generator of radio pulses, containing a generator of sinusoidal signals, the output of which is connected to the first input of an output amplifier-former, and a generator of pulses, are inserted sequentially connected between the output of the r iepaTopa sinusoidal signals and the second input of the output amplifier, which is fixed by a fixer. And element, R5-trigger, shaper of delay pulses and shaper of pulses, the second inputs of the element And and the RS-flip-flop are connected to the generator outputs and pulses. A generator containing a sinusoidal signal generator, the output of which is connected to the first input of an amplifier amplifier, a pulse generator and a series-connected counter, infrared and decoder, are connected in series between the output of the generator of sinusoidal signals and the second input of the output amplifier-former zero lock, first element NAND, Rs-trigger, shaper of delay pulses, gating pulse shaper and the second element of NAND, with the output of the pulse generator connected to pulse counter, and the output of the decoder is connected to the second inputs of the first and second elements AND-NOT and the second input Rs - the rigger. A power supply analyzer, a time relay, a key and a matching unit are introduced, the input of which is connected via a switch to the output amplifier output of the driver, and the control input of the switch is connected via a time relay to the output of the analyzer of supply voltages connected to the power supply unit . FIG. 1 shows the structural electrical circuit of the proposed device, the first option; in fig. 2 - the same, the second option. The device contains (Fig. 1) a sinusoidal signal generator 1, a BSEC amplifier shaper 2, a generator of 3 pulses, a latch 4 zero, an AND 5 RS trigger 6 element, a shaper 7 of delay pulses, a shaper 8 shaper. The proposed device according to the second variant (FIG. 2) comprises a generator of 9 sinusoidal signals, an output amplifier-shaper 1O, a pulse generator 11, a clamp 12 zero, an AND-HE element 13,. RS-trigger 14, shaper pulse shaper 15, gating pulse shaper 16, I-NE element 17, counter 18, decoder 19, key 20, matching unit 21, time relay 22, power supply analyzer 23, power supply 22. The generator of radio pulses (Fig. 1) works as follows. Generator 1 generates a sinusoidal signal that arrives at EKODY forces of body 2 and latch 4, which generates short pulses with the level of a logical unit, the leading fronts of which coincide in time with the moments of zero crossing voltage. Generator 3 generates square-wave pulses, which at its first output have a logic one level, and on the second - a logic zero level. In the pause between the pulses, the first output of the generator 3 sets the logic zero level, and the second output sets the level of the logical unit by which the trigger 6 is set to the logic zero state with the pulse repetition frequency. The frequency of the pulses of the generator 3 is set equal to the required frequency of repetition of radio pulses. Formation time intervals on the first generator input 3, connected to one of the inputs of element 5, pulses with a logic level of the second input of the trigger 6, establish the logic zero level and the trigger 6. is in a state with a logical zero level. At those moments when, at the specified time interval, pulses with the level of a logical unit are also generated at the output of latch 4, element 5 has pulses with a level of logical unit at the output that repeat in form pulses at its input from latch 4, the first of which sets Re trigger 6 to a state with a level of logical one. The leading edges of the output pulses of element 5 coincide in time with the leading edges of the output pulses of latch 4, and also with the moments of the transition of the signal voltage of the generator 1 through zero. In connection with the above, the RS-trigger 6 is in a state with the level of a logical unit from the moment when the output of element 5 of the first pulse occurs during the formation time interval at the first output of generator 3 of a pulse with the level of logical unit until it terminates at the first output of generator 3 impulse with the level of the logical unit and the installation of the trigger 6 in the state with the level of the logical zero, the level of the logical unit arriving at its input and the second output of the generator 3. The frequency with which the trigger is set to P1ie logical unit is equal to the pulse generator 3. The frequency generator 7 generates pulses of rectangular shape, the front edges of which coincide with the moments of the installation latch sosch 6-o of the logical unit. The duration of the output pulses of the imaging unit 7 is controlled from 0 to the duration of the period of the lowest frequency of the signal, and their frequency pa & at the frequency of the installation of the trigger 6 to the state of the logical unit.

The imaging unit 8 generates rectangular pulses with a logic level, the duration of which determines the duration of the radio pulses and the leading edges coincide with the falling edges of the output pulses of the imaging unit 7. These pulses have an adjustable delay in relation to the moments of the first in the pulse interval with a logic zero level on the first output generator 3 transition sinusoidal signal through zero.

Amplifier-driver 2 serves to generate radio pulses in the interval of control arriving at its input from a driver 8 with a logic unit level and to increase the power of the generated pulses to the required level O1 assigned by the radio pulse generator designation.

The principle of operation (Fig. 2) of the proposed radio pulse generator according to the second variant differs from that described in that the pulse generator 11 generates rectangular pulses whose frequency is equal to the selected minimum radio pulse duty cycle greater than the radio pulse repetition frequency. Pulse counter 18 divides the frequency of the output pulses of the generator 11 by a number equal to the minimum duty cycle, and each of the possible combinations of states (one or zero) of the counter 18 repeats in terms of n generator pulses 11 equal to the minimum duty ratio. Deshi (a rator forms a square pulse with a level of a logical unit and a duty cycle equal to the selected minimum duty cycle of radio pulses.

The element 17, the inputs of which are connected to the output of the decoder and the imaging device 16, at the time intervals of the coincidence of the input pulses with the level of the logical unit generates pulses with the level of the logical zero.

The duration of the latter does not exceed the duration of the output pulses of the decoder, even when the length of the pipe is set

pulse generator 16, exceeding the period of the frequency of the pulses generated by the decoder. As a result, a limitation of the duty cycle of the output pulses is achieved, ensuring an increase in the reliability of the generator of radio pulses. The block 21, designed to compensate for the reactive components of the input impedance of loads and transfuse the input impedance loads to the optimal load impedance, is connected to the output of the former 1O through the switch 20 only after a certain time interval has passed after the output levels have been set

5 napr sasheniya power supply. The choice of the value of the specified interval is determined by the duration of transients associated with the switching on of the generator, and the relay 24 is determined. The time relay is controlled by the analyzer 23, which turns on the time relay only if all the supply voltages are present and turns it off in the absence of any of the indicated stresses.

Introduction to the generator of radio pulses of new nodes ensures the formation of radio pulses with a stable and adjustable initial phase of the filling signal and high reliability of the radio pulse generator. The stability of the initial phase allows the generator to be used in tuning phased arrays of sonar systems.

Claims (3)

1. The generator of radio pulses, containing a generator of sinusoidal signals, the output of which is connected to the first input of the output amplifier-former, and a pulse generator, characterized in that, in order to increase the stability of the initial phase of the filling signal, sequentially connected between the output of the sinusoidal signal generator and the second input of the output usigelgel form a clamp zero, an element, an Rs trigger, a delay pulse former and a driver gating pulses, the second outputs of the element And and RS trigger connected to the outputs of the pulse generator. 2. A radio pulse generator comprising a sinusoidal signal generator, the output of which is connected to the first input of the output forming unit, the pulse generator and the pulse counter and desh4 meter sequentially activated, characterized in that, in order to increase the stability of the initial phase of the filling signal, serially connected between the output of the generator of sinusoidal signals and the second input of the output amplifier —former latch zero, the first AND – NO element, Rs trigger, shaper delayed pulses, the starter strobe pulses to the second element AND-NOT | moreover, the output of the pulse generator is connected to the input of the pulse counter, and the output of the switch 4 is connected to the inputs of the first and second elements of the NAND and the second input of the RS flip-flop. 3 3. Genofator of radio pulses according to claim 2, characterized in that, in order to increase reliability, the analyzer has the presence of supply voltages, a time relay, a key and a matching unit, the input of which is connected to the output of the output form amplifier via a key, the control input which, through turnip time, is connected to the output of the analyzer of the presence of supply voltages, which is connected to the power supply unit. Sources of information taken into account in the examination 1. USSR author's certificate No. 599327, cl. H 03 B 7 / 12.03.11.76. 2. USSR author's certificate No. 651464, cl. N OZ K 3/80, 09.O9.77. Bb / yff eight § h i 4l n Nl Jsl fr "v r f SCk " M SCJ to