SU488337A1 - Phase shift key for harmonic signals - Google Patents

Description

one

The invention relates to radio communications, radio telemetry, and radio navigation, and can be used to generate phase-shifted pulse signals.

Known manipulator phase harmonic signals, containing input and output matching blocks, input and output transformers, each of which has a first winding connected to the corresponding matching unit, and the second winding with an average tap, and the conclusions of the second winding of the input transformer through the respective series-connected diode and a resistor connected according to the findings of the second winding of the output transformer, and the average tap of the second winding of the input transformer is connected to the first you the generator of control pulses, the second output of which is connected to the middle tap of the second winding of the output transformer.

The known manipulator is characterized by a high level of harmonic interference signal on the manipulator output in the pauses between the control pulses. To suppress the interference signal in a known phase manipulator, it is required to apply an amplitude-impulse modulator installed either at the input or at the output of the manipulator.

The purpose of the invention is to suppress the harmonic signal of interference in the pauses between the control pulses at the manipulator output.

This is achieved by the fact that, in the proposed manipulator, third windings with medium taps are introduced into the input and output transformers, and the terminals of the third winding of the input transformer through the corresponding series-connected diode and the resistor of the junction are opposite to the terminals of the third winding of the output transformer, and the middle taps of the third windings of the input and the output transformers are connected respectively to the third and fourth outputs of the control pulse generator.

FIG. I is a diagram of the phase shift key for harmonic signals; in fig. 2 - time diagrams that show his work.

The phase shift key for harmonic inputs contains input 1 and output 2 matching blocks; input 3 and output 4 transformers, each of which has a first winding combined with a corresponding matching unit, a second and third windings with middle taps, and a generator of driving pulses 5, and the terminals of the second winding of the input transformer 3 through the respective serially connected diode 6 and a resistor 7 are connected according to the leads of the second winding of the output transformer 4, and the leads of the third winding of the input transformer 3 through the respective series-connected diode 6 and a resistor 7 connect They are opposed to the leads of the third winding of the output transformer 4, the middle tap of the second winding of the input transformer 3 is connected to the nerve output b of the control pulse generator 5, the second output of which is connected to the middle tap of the second turn, the output transformer 4, and the third tap of the third winding the input transformer 3 is connected to the third output of the control pulse generator 5, the fourth output of which is connected to the middle tap of the third winding of the output transformer 4.

The manipulator works as follows.

The harmonic signal is fed through the matching unit 1 to the input of the transformer 3 and to its outputs (Fig. 2a). After the trigger pulse is applied to the input of the control pulse generator 5, unipolar manipulation control pulses are generated at its outputs (Fig. 2b, c) which through the middle taps of the respective windings of transformers 3 and 4 and through the alignment resistors 7 are fed to the switching diodes 6. This opens the pair of switching diodes 6, the PA which receives the control pulse in the data moment.

At the output of the transformer 4 prn provided that one of the windings is disconnected, the radio pulses would be formed, shown in fig. 2 d, e. With simultaneous connection of the windings at the output of the transformer 4 and, respectively, at the input and output of the matching

unit 2, a radio pulse signal is generated with phase manila (Fig. 2d). Due to the antiphase of the harmonic signal at the inputs of transformer 4, in the pauses between the control pulses at the output of the manipulator, the harmonic signal of interference is suppressed.

Subject invention

An torus of the phase of harmonic signals containing input and output matching blocks, input and output transformers, each of which has a first winding connected to the corresponding matching unit, and a second winding with an average tap, and the conclusions of the second winding of the input transformer through corresponding series the connected diode and the resistor are connected according to the terminals of the second winding of the output transformer, with the middle tap of the second winding of the input transformer connected to the first output of g The control pulse generator, the second output of which is connected to the middle branch of the second winding of the output transformer, characterized in that, in order to suppress the harmonic signal of the interference in the pauses between the control pulses, the third windings with middle taps are inputted, and the third windings windings of the input transformer through the corresponding series

The connected diode ii resistor is inversely connected to the leads of the third winding of the output transformer, and the middle taps of the third windings of the input and output transformers are connected respectively to the third and fourth outputs of the control pulse generator.

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