SU1297247A1 - Device for generating frequency-shift keyed signals - Google Patents

Abstract

The invention relates to radio engineering. The purpose of the invention is to increase the accuracy of the formation by increasing the accuracy of stabilization of the phase of the output signal. The device contains a wired generator 1, phase shifters 2, 3 and 15, a shaper (F) 4 of the lower frequency, F 5 upper frequency, frequency manipulator 6, frequency converter 7, load unit 8, F 9 and 10 reference signal, multipliers 11, 12 and 18 signals, integrators 13 and 14, auxiliary signal generator 16, a mixer 17, a frequency generator, a clock generator 19, a pulse-phase detector 20, a manipulation signal F 21, a polling pulse 22, switch 23-26, delay block 27 . Phase shifters 2, 3, and 15 are controlled until the integration results are zero and each polling point. Since in this case the phases of the reference signals and the phase of the output signal of the mixer 17 are zero, the auto-tuning stops when the average phases of the signals at the output of the block 8 are zero. 1 nl. I (lu; o vj ND NPU

Description

The invention relates to radio engineering and can be used to carry out signal manipulation by frequency shifting in discrete information transmission systems.

The purpose of the invention is to increase the formation accuracy by increasing the accuracy of the stabilization of the phase of the output signal.

The drawing shows a structural electrical circuit of the device.

The device contains a master generator 1, the third phase shifter 2, the second phase shifter 3, the shaper 4 of the lower frequency, the shaper 5 of the upper frequency, the frequency manipulator B, the frequency converter 7, the block 8 of the load, the shapers 9, 10 of the reference signal, the second third multipliers 11, 12 signals, integrators 13, 14, first phase shifter 15, auxiliary signal generator 16, frequency mixer 17, first signal multiplier 18, 19 clock pulse generator, pulse-phase detector 20, manipulation driver 21, shaped Vatel polling pulses 22, the keys 23 - 26, the delay unit 27.

The device works as follows.

The signal of the master oscillator 1 is supplied through the phase shifters 2, 3 to the formers 4, 5 switchable frequencies. The switched frequencies are fed to the frequency manipulator 6, from the output of which the FM signal with an integer modulation index after conversion to the operating range in the frequency converter 7 enters the load unit 8, for example, an oscillating circuit.

The manipulation signal controlling the frequency manipulator 6 is generated from the clock pulses supplied to the driver 21 from the clock pulse generator 19. Clock pulses also arrive at the reference input of the pulse-phase detector 20 in the auto-tuning circuit of the output signal of the frequency mixer 17, the driver 22 of the polling pulses and the installation inputs of the drivers 9, 10 of the reference signals. The output signal of the frequency mixer 17 is formed from the auxiliary signal of the generator 16 and the signal of the local oscillator supplied to the second input of the mixer 17

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frequency with an additional output of the converter 7 frequency. The output signal of the frequency mixer 17 is supplied to the signal multiplier 18 and to the signal input of the pulse-phase detector 20, from the outputs of which the error signals go to the control inputs of the phase shifter 15. As a result of auto-tuning, the output signal of the frequency mixer I7 becomes zero.

The reference signals generated from the frequency of the master oscillator 1 using shapers 9, 10, are fed to the multipliers 11, 12 signals, the second inputs of which receive a signal from the multiplier 18. The results of multiplying the lower and upper frequency reference signals with the output signal of the multiplier 18 are averaged integrators 13, 14 whose outputs control the keys 23-26. The signal inputs of the keys 23-26 receive polling pulses from the imaging unit 22, which are formed from clock pulses by dividing, while the averaging of the output signals of multipliers 11, 12 is carried out over two or more elementary parcels. Depending on the signs of the numbers recorded in the integrators at the time of the survey, one or another key is opened at the output of each integrator, and the polling pulses are passed to the control inputs of phase shifters 2, 3. The zeroing of the integrators 13, 14 is performed by polling pulses passed through the delay block 27 .

Phase shifters are controlled until the integration results become zero at each polling point. Since in this case the zero phases are the reference cjirnanoB and the phase of the output signal of the frequency mixer 17, the auto-tuning stops when the average phases of the signals at the output of the load unit 8 are zero.

Claims (1)

Invention Formula A device for generating frequency-manipulated signals, comprising a series-connected master oscillator and a first phase shifter, as well as a pulse-phase detector, a clock generator, A second phase shifter, two keys, a manipulator of a manipulation signal and a load unit, characterized in that, in order to increase the shaping accuracy by improving the accuracy of stabilization of the output signal phase, the auxiliary signal generator, frequency mixer, first multiplier of signals, second multiplier are introduced signals and the first integrator, as well as the third phase shifter, upper frequency driver, lower frequency driver, frequency manipulator, frequency converter, first, W swarm reference signal conditioners, polling pulse generator, third signal multiplier, second integrator, third and fourth keys and delay unit, the clock pulse input combined with the first inputs of the second, third phase shifters, the first and second reference wave conditioners and connected to the output of the master oscillator , the output of the clock generator is connected to the combined first input of the pulse-phase detector, the input of the interrogation pulse generator, the second inputs of the first and second of the reference signal formers and the input of the manipulation signal generator, the output of which is connected to the first input of the frequency manipulator, the second and third Editor N.Shvydka Order 797/62 Circulation 639 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raugaska nab., 4/5 Production and printing company, Uzhgorod, st. Design, And About 5 0 0 5 five the inputs of which are connected respectively to the outputs of the upper and lower frequency drivers, the inputs of which are connected respectively to the outputs of the second and third phasers, the control inputs of which are connected to the outputs of the corresponding switches, the first inputs of which are connected to the output of the polling pulse generator connected to the first inputs the first and second integrators, the second input of the second integrator is connected to the output of the third signal multiplier, the integrator outputs are connected to the second inputs and the corresponding keys, the outputs of the first and second drivers of the reference signal are connected respectively to the second input of the second multiplier and the first input of the third multiplier, the second input of which is connected to the output of the first signal multiplier, the second input of which is connected to the output of the frequency manipulator through serially connected frequency converter and unit load, the second output of the frequency converter is connected to the second input of the frequency mixer, the output of which is connected to the second input of the pulse ovogo detector which outputs are connected to the control inputs of the first phase shifter connected to the auxiliary signal generator. Compiled by N. Lazarev Tehred L. Serdyukova Proofreader S. Shekmar