SU736369A1 - Multi-position frequency-phase signal manipulator - Google Patents

Description

I

The invention relates to the field of pulsed technology and, as a multi-position frequency-phase key signal changer, can be applied in communication devices, radio telemetry and radar.

It is known a device for generating highly stable phase-manipulated oscillations, comprising reference and synchronization generators with frequency dividers, an adjustable element of the time delay of pulse signals, a phase detector, a low-pass filter, and a coding block l.

A disadvantage of this device is the inability to synchronously control all output signals.

It is also known a device for generating signals with a calibrated phase shift, consisting of N-frequency synthesizers, each of which contains series-connected; synchronized g-generator, variable frequency divider

dividing, phase detector, low pass filter, attenuator and cyi iMaTop, frequency divider, reference oscillator and reference voltage block 21.

A disadvantage of this device is the inability to synchronously control all output signals.

The purpose of the invention is to expand the functionality of the known device, which is to provide a synchronous control of all the output signals of the multi-spec frequency-function signal manipulator.

The goal is achieved by the fact that in the device containing the reference

15 generator two frequency dividers with a constant division factor and two synthesizers, each of which consists of series-connected frequency dividers, with a variable coefficient

20 dividing phase detector, low-pass filter —and synchronized oscillator, with the output of the reference oscillator connected to the inputs of the frequency dividers

a constant division factor, the outputs of these frequency dividers are connected to the second inputs of the corresponding phase detectors, a mixer is entered into each synthesizer, with one mixer on the total frequency and the difference difference, the outputs of the mixers are connected to the inputs of the corresponding frequency dividers with a variable division factor, the inputs of each mixer connect the switches to the outputs of both synchronized generators.

The drawing shows a block diagram of the proposed device.

Multiple Frequency Visa

The manipulator contains a reference oscillator 1, two frequency dividers with a constant division factor of 2, 3 and two frequency synthesizers 4, 5, each of which consists of a series-connected frequency divider with a variable division factor of 6 or 7, phase detector 8 or 9 , low pass filter 10 or 11, synchronizable oscillator 12 or 13 and the mixer

14 or 15, and the output of the reference rator 1 is connected to the inputs of frequency dividers 2 and the outputs of frequency dividers 2 and 3 are connected to the second inputs of phase detectors 8 and 9, which are the inputs of each mixer 14 and

15 are connected to the outputs of both synchronized generators 12 and 13.

Multi-position frequency-phase manipulator of signals works as follows.

Suppose that at time to increased the division factor Kg of frequency divider 6 with a variable division factor, while at its output, i.e., at the input of phase detector 8, will decrease The frequency compared with the frequency of comparison of phase detector 8 and at the output of phase detector 8 the mismatch, which is highlighted by the low-pass filter 10, and, acting on the frequency-generating elements of the synchronized generator 12, increases its frequency. The signal from the output of the synchronized generator 12 is of greater frequency than before the moment t. Through the mixer 15, tuned to the total frequency component of the signals of the synchronized generators -12 and 13, frequency divider 7 to the input of the phase detector 9, which will cause output of the phase detector 9 of the error signal, which is selected by the low-pass filter 11, and, acting on the frequency-generating elements of the synchronized generator 13, lowers its frequency. This signal also goes to mixer 14, which is tuned to the difference component of the frequencies of signals from synchronized generators 12 and 13, to further increase the frequency at the input of the phase detector 8 (since Wcr i3 uicr12-1 oka,

Finally, at the time of termination of the transient, the tt process does not occur at the inputs of the phase detector 8, the frequencies arriving at its inputs are equal. At the same time moment i at the input of the phase detector 9, the frequency of the signal will become equal to the frequency c, equal, i.e. it received its initial value (since y.12 increased, and o) tr decreased), the decrease of the frequency of the synchronized generator 13 can be caused only by a change in the voltage level at the output of the low-pass filter 11, and this is possible only in the case of a new phase shift of signals brought to the inputs of the phase detector 9. But since the division factor K of the frequency divider 7 and the phase of the reference signal at the input of the phase etektora 9 are not changed, that means change the oscillation phase at the other input of the phase detector 9, and hence the output of the mixer 15, Similar processes take place when changing the dividing ratio K of the divider 7.

Using the limit transition theorem, the values of frequencies and phases in the function of the division factor Kj of frequency divider 7 with a variable target ratio, which are defined as:

 at the output of the synchronized generator 12 frequency

to.

m

- at the output of the synchronized generator 13 frequency

, .1 / Kb V 1,

erti aVKi Ti o--

 at the exit of the mixer 15 phase

one

(-.

-one

,

I eat 15

ai

chz) U1,1 i

Stra

- output mixer 14 frequency Ki

cm 14 (-frequency of the reference oscillator where uj is the steepness of the static character "nr sp. the characteristics. synchronized generators 12 and 13; Krd8" | e. coe4) transmit transmitters of the phase detectors 8 and 9; The drawing is a structural manipulator circuit. From the analysis of the operation and reduced values of the manipulated signal parameters (frequency and phase) from the different outputs of the multi-position frequency-phase key handler of the signals, all four signals have a different frequency range, three signals are manipulated in frequency, and one devices as a multi-position frequency-phase manipulator of the transmitting device significantly increases the immunity of the communication system as a whole. Thus, the information embedded in the program changes and dividing the coefficient K, the frequency divider 7 with a dividing ratio variable TRANSFORM ruets law in varying frequency and phase of some other signals, i.e. the device allows simultaneously forming mnogopozitsioynye frequency-phase-shift keyed signals.

eer and

Claims (2)

Claims of the invention. A multi-position frequency-phase manipulator of signals comprising an anchor. generator, the output of which is connected to the DO inputs of two frequency dividers with an alternating division factor and two testers, each of which consists of "3 serially connected frequency dividers with a variable division factor of the phase detector, low-pass filter and synchronized generator, the outputs of these dividers the frequencies are connected to the second inputs of the corresponding phase detectors, characterized in that, in order to expand the functional possibilities, an mixer is introduced into each of the synthesizers, and the outputs are mixed s are connected to the inputs of the frequency divider with a variable division ratio, each mixer inputs are connected to outputs of synchronized generators of each synthesizer. Sources of information taken into account during the examination 1. USSR author's certificate No. 372671, cl. H 03 K 7/04, 15.12.71. 2.Certificate of Certificate No. 2497596, cl. H 03 K 7/04, 2O.06.77 (prototype).