SU815872A1 - Pulse modulator - Google Patents

Description

(54) PULSE MODULATOR

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The invention relates to a pulse technique and can be used in receiving-transmitting devices operating with high pulse repetition rates.

Pulse modulators are known that generate pulses in the process of accumulator discharge, in which the pulse frequency is limited by the accumulator charge time between the pulses. Since the accumulator parameters are generated from the condition of providing the required pulse duration, the storage battery charge time can only be achieved by changing the parameters of the charging element. On the other hand, at the time of the formation of the pulse, the charging element should eliminate the possibility of switching the power supply IJ by switch.

However, the implementation of this attempt, when used as a charge element, of thrust leads to a limitation of its value MHHMVftuibiioro

which also sets the maximum value of the pulse frequency.

The closest to the invention in its technical essence is a pulse modulator, in which the accumulator is charged and discharged by means of active elements operating in a key mode, and the formation of a pulse on the load occurs both in the process of charging and in during the process that

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allows you to increase the pulse frequency. Such a modulator contains a power supply, an artificial line, an output pulse transformer with two primary windings, a charging

5 and bit switching elements 2J.

However, such a modulator has insufficient noise immunity.

The purpose of the invention is to improve the noise immunity.

Claims (2)

The goal is achieved by the fact that in a pulse modulator containing a power source, an artificial line, an output pulse transformer with two primary windings, a warning and discharge switching elements, the controlled electrode of each of which is connected to the output of the corresponding pulse generator, connected to the anode of the discharge switching element and the input of the artificial line, the output of which is connected to the cathode p through one of the primary windings of the output pulse transformer sp-stand of the switching element and through the other primary winding is connected to the anode of the charging kommutiruyuschegchz element, a cathode of which is connected to the common point and the modulation m, the secondary winding of the pulse transformer output is connected to the discharge. The drawing shows a functional block diagram of the modulator. The device contains a power source 1, the output of which is connected to the anode of the discharge switching element 2 and the input of the artificial line 3, the output of which is connected through the primary winding 4 of the output pulse transformer 5 to the cathode of the switching switching element 2 and through the second primary winding 6 transformer 5 by the anode of the charge switch5 of the switching element 7, the cathode of which is connected to the total width of the modulator .. In this case, the secondary winding 8 of the transformer 5 is connected to the load 9, the control electrodes of the discharge 2 and charge 7 co mutating impeding elements are connected to the outputs of the generators 1O and 11 run respectively. Pulse modulator works as follows. A start pulse from the generator 11 is supplied to the control electrode of the charging switching element 7, which operates and closes the circuit of the artificial line 3 from the power source 1 through the primary winding 6 of the output pulse transformer 5 and the anode-cathode section of the charging switching element 7. During charging yes, the load 9 receives a pulse from the secondary winding 8 of the output impulse transformer 5. At the end of the charge of the artificial line 3, the charging switching element 7 closes. With the start-up impulse arriving from the 1O generator to the control electrode 2 .4, the discharge switching element 2 is activated, and the artificial line 3 is discharged through the anode cathode of the discharge switching element 2 and the primary winding 4 of the output pulse transformer 5. From the secondary winding 8 of the transformer 5 in this case, the load 9 receives a pulse of the same polarity as during the charging of the artificial line 3. In the proposed modulator, the restriction of the current and voltage of the load associated with the maximum additional voltage is eliminated. by varying the values of the direct current and the reverse voltage of the diodes used in the output circuit of the known device, the noise immunity increases, all dimensions and weight of the modulator decrease. Claims of the invention A pulse modulator containing a power source, an artificial line, an output pulse transformer with two primary windings, a charge and discharge switching elements, the sintering electrode of each of which is connected to the output of a corresponding pulse generator, from which in order to increase the noise immunity, the power supply source is connected to the anode of the discharge switching element and the artificial input, the line, the output of which through one of the primary windings of the output pulse The transformer is connected to the cathode of the discharge switching element and through the other primary winding is connected to the anode of the charging switching element whose cathode is connected to the common point of the module, while the secondary winding of the output pulse transformer is connected to the load. Sources of information received into account in the examination 1. Ivanov A. B. and Sosnovkin O. N. Pulsed microwave transmitters. M., Soviet Radio, 1956, p. 389, 2. Copyright svdedetstvo USSR fe 57O194, cl. N OZ K 3/53, 1976 (the prototype). . ./LOGHTS . L: I