SU1727199A1 - Phase manipulator - Google Patents

Abstract

The invention relates to a pulse technique and can be used in communication systems. The purpose of the invention is to extend the functionality by transmitting additional telegraphic or digital information in a communication channel simultaneously with the phaomanipulated signaling. The phase manipulator contains an adder b, a key 10, a splitter of 11 phases, a key 12. The introduction of a 1 frequency divider, a digital synthesizer 2 a linear-frequency-modulated signal, a generator of 3 meander linear-frequency-modulated signal, 4. and 5 keys and dividers 7 -9 frequencies allow for enhanced functionality through dual-channel radio; 4 il.

Description

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The invention relates to a pulse technique and can be used in communication systems.

The purpose of the invention is to expand the functionality by transmitting in the communication channel additional telegraph or digital information simultaneously with the phase-shift keyed signal.

FIG. 1 shows the functional diagram of the phase manipulator; in fig. 2-4 - time diagrams of his work.

The phase manipulator contains a divider of 1 frequency, a digital synthesizer 2 of a linear-frequency-modulated signal, a shaper 3 of a meander linear-frequency-modulated signal, keys 4 and 5. adder 6, dividers 7-9 of frequency, key 10, splitter 11 phases. key 12. The input bus is connected to the inputs of frequency dividers 1 and 7-9, the output of frequency dividers 1 is connected to the digital synthesizer 2 input of a linear frequency modulated signal, the output of which is connected to the input of the imaging unit 3 of a linear frequency modulated signal, the first and The second outputs of which are connected to the control inputs of the keys 4 and 5, the inputs of which are connected respectively to the first and second outputs of the splitter 11 phases, and the outputs to the inputs of the adder 6, the output of which is connected to the output bus. The outputs of frequency dividers 7 and 8 are connected respectively to the inputs of keys 10 and 12, the outputs of which are connected to the input of the splitter 11 phases, and the control input of the key 10 to the synchronization input of a digital synthesizer 2 linear frequency modulated signal and the first output of the frequency splitter 9, the second output of which is connected to the control input of the key 12.

Phase modulator works as follows.

Frequency divider 1 reduces the frequency of the input signal to ensure the reliability of the digital signal synthesizer 2 sig-. A signal is generated at the output of which a linear-frequency-modulated signal with a saw-tooth modulation law (Fig. 2, in. 3, a) with parameters: frequency deviation A f TcNn. for example fH 1 MHz, fK 3 MHz, D f 2 MHz, g m 100 ms. This signal enters the imaging unit 3. At the output of which the antiphase signals are formed, shown in FIG. 3b, which are fed to the control inputs of the keys 4 and 5. The output periodic signal of the phase manipulator with a period of 2 tons is formed in two time intervals: the first half period (ti-t2) g m and the second half period (tz-ta) g m

Frequency divider 7 forms a harmonic coherent signal of frequency f2. which in the time interval (ti-t2) (Fig. 2. b) enters through the key 10 to the input of the wideband phase splitter 11, made, for example, in the form of a mid-point transformer. The frequency signal f2 is the carrier frequency for the time ti-ta in the output of the phase shift key. Due to the fact that the signal f2 enters in antiphase at the inputs of the keys 4 and 5, this signal of the carrier frequency f2 on the output bus is suppressed, and since the keys 4 and 5 are controlled by meandering signals linearly varying

5 to the frequency, then at the output of the adder 6 a complex dual linear frequency-modulated signal is formed, consisting of two spectral components (lower and upper), having a linear mirror-frequency modulation with suppressed carrier (Fig. 2, a, 4, but). During the time of the second half period (Fig. 2, b) from the output of the frequency divider 8, the signal of another carrier frequency f3 f2 + Af is fed through the switch 12 to the input

5 of the phase splitter 11, and thus the second part of the phase manipulator output signal is formed (Fig. 2, a, 4 a,). The formation of such a double linear-frequency-modulated signal is possible in

0 because of the unified nature of frequency and phase modulation.

Introducing new elements and connections into the phase manipulator allows two

5 radio channels, in one of which transmit telegraph or digital information using the temporal position of the linear frequency modulation (using one side of the spectral

0 component), which increases the functionality of the device. In addition, the output signal due to a wider spectrum of frequencies (4 times) provides additional noise immunity and

5 stealth lines of communication.

Claims (1)

Claims of the Invention Phase manipulator containing a phase splitter, the first and second outputs of which are connected respectively to the inputs of the first and second keys, the outputs of which are connected to the inputs of the adder, the output of which is connected to the output bus, characterized in that. that, in order to expand the functional possibilities. Four frequency dividers are added to it, the third and fourth keys and a digital synthesizer of a linear-frequency-modulated signal connected in series, and a meander-frequency-modulated signal shaper, the first and second outputs of which are connected respectively to the control inputs of the first and second keys, with This input bus is connected to the inputs of all four frequency dividers, the output of the first of which is connected to the input of a digital synthesizer of a linear-frequency-modulated signal, the output s of the second and third frequency dividers through the third and fourth flL t t respectively, with the input of the phase splitter, the first and second outputs of the fourth frequency divider, respectively, with the control inputs of the third and four keys, and the synchronization input of the digital synthesizer linear-frequency-modulated c and gnal with the first output of the fourth frequency divider. 1P . $ Loka9 Mr. On Out. 2 Pack 9 Outlet & 2 -t at FIG. 2 PT GP f K1 ftl K2 S (I a GT1 I I g f t 1.3 2 /, J t2t1.3 & FIG. four - t At the exit FIG. J