SU1515337A1 - Digital multiphase generator - Google Patents

Abstract

The invention relates to radio engineering and communications and can be used as a model source of periodic signals of any shape with varying amplitude and phase according to a given law. The purpose of the invention is to enhance the functionality by providing independent modulation of each of the N generated signals. In order to achieve the goal, a unit 3 of the division factors, N controlled frequency dividers 4 frequencies, N additional counters 5 are entered into the device. phase modulations and the corresponding inputs of the generator of 13 amplitude modulations, the outputs of which binary codes change according to a given law, which leads to an independent (separate) modulation of the output signals in phases e and / or amplitude with different frequency. 1 il.

Description

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The invention relates to radio engineering and communications and can be used as a model source of periodic signals of any shape with varying amplitude and phase according to a given law.

The aim of the invention is to enhance the functionality by providing independent modulation of each of the N generated signals.

The drawing shows a structural electrical circuit of a digital multiphase generator.

 The digital multiphase generator contains a reference generator 1, a counter 2 setpoint adjuster 3 division factors, first, second, ..., Nth controlled dividers 41.4J, ..., 4 frequencies, first, second, ..., N- th additional counters 5, 5, j,. . .,, setting unit 6 phase modulations, first, second, ..., N-th adders 7, 7,. . , 7f ,, setting unit 8 phase shifts, first, second, ..., Kth blocks 9t, 9,. . . , 9f code comparison, master of 10 modes, first, second ,. N-th blocks 11, 11, ..., 11 of operational memorization, unit of 12 waveforms, unit of 13 amplitude modulations, the first, second, ..., N-th additional arc of 14,14, .. .

I4j, master of 15 amplitudes, first, second, ..., N-th digital-analog converters 16 ,, 16, ..., 16, first, second, ..., Nu additional digital-to-analog converters 17,17, .. ., 1 7 fJ and dial 18 scaler.

The digital multi-phase generator operates as follows.

The sequence of w pulses comes from the output of the reference generator 1 to the counting input of the counter 2. The changing binary code goes to the first inputs of the first, second, ...,. N th adder 7, 7 ,. .., 7, to the second inputs of which, from the corresponding outputs of the setting device 8, constant binary codes are supplied, which provide

relative phase shift between output of the output signals in phase

driving signals. In the setting unit 12 recorded codes of the instantaneous values of one period of several types of signals. These codes are instantaneous values of the desired waveform census-it with the first, second, ..., N-th blocks 1 1 1, 11 2,. . ., 1 Ifj at the corresponding addresses, the codes of which from the address output of preset 1 12 come to the second

Claims (1)

and / or amplitude with different frequencies. The formula of the invention Digital multi-phase generator, holding in series the reference generator and counter, first second, ..., N-adders, first, swarm, .., N-th blocks of operational zap the inputs of the first, second, ..., N-ro blocks 9.9 ,, ..., 9. If the address code at the address input of the first, second, .. matches. , JJ-ro blocks 11, 11 2, ..., 11 with the address code at the address output of the setpoint 12 at the output of the first, second, ..., N-ro blocks 9,, 9, ..., 9, write pulse. The output signals are generated by cyclically reading the recorded in the first, second, ..., N-M blocks 11,11 ,. 11m of information and the subsequent conversion developing it in analog form on the first, second, ..., N-M digital-analogue converters 1 6 ,, 1 6,. . . , 1 6 | d. The amplitude of the output signals depends on the voltage at the outputs of the first, second, ..., N-ro additional digital-to-analog converters 17,17,. ..., 17, to the informational inputs of which the binary codes are received from the outputs of the first, second, ..., Nth additional adders 14 ,, 14, ..., 14 |, voltage is supplied to the reference inputs from the output of the setter 18. The first inputs of the first, second, ..., N-ro additional adders I4, l4, ..., 14jj Constant binary codes are received from the corresponding outputs of the setting device 15. The setting of the setting device 6 and the setting device 13 is carried out using the setting device 10. The pulse sequence from the additional counter 2 is fed to the counting inputs of the first, second, ..., N-th controlled dividers 4 ,, 4, ..., 4 ratio, dividing is set using the setting device 3. The binary codes changing from different frequencies G from the outputs of the first, second, ..., N-ro additional counters 5, ..., 5, ..., 5 1 are fed to the corresponding inputs of the setting device 6 and the corresponding inputs of the setting device 13, on the outputs of which the binary codes change according to a predetermined-law, which leads to independent (separate) modulation of the output signals in phase and / or amplitude with different frequency. Invention Formula A digital multi-phase generator containing a series-connected reference generator and a counter, first, second, ..., N-adders, first, second ,, .., Nth operational storage units, first, second, ..., N-ft code comparison blocks, first, second, ..., Nth digital-analogue converters, first, second, ..., Nth additional adders, first, second, ..., Nth additional digital-analogue converters, setting unit phase modulation, phase shifter. The first, second, ..., L th outputs of the amplitude generator are connected to the first inputs of the first, second, ..., Nth additional adders, the second inputs of which are connected to the corresponding outputs of the amplitude module. , exits waveform adjuster, setter of the first, second, ..., N-ro additional digital-to-analog converters, the first, second, ..., Lth outputs of the setpoint amplitude are connected to the first inputs of the first, second, respectively ., N-ro additional adders, the second inputs of which are connected to the corresponding outputs of the generator of amplitude modulation, the outputs lithunbs modulations, amplitude adjuster and scale adjuster, with the counter output connected to the first inputs of the first, second, ..., Nth adders, the outputs of which are connected to the first inputs of the first, second, ..., N-ro comparison blocks, respectively codes and address inputs, respectively, of the first, second, N-ro blocks of operational storage, the first, second, ..., M-th outputs of the phase shift originator are connected to the second inputs of the first, second, ..., N-ro adders, the third inputs of which are connected to the corresponding terminals: o-25 sima deductions of each of the N genera- tors of the phase modulation gatekeeper, the first, second, ..., Nth information outputs of the waveform adjuster are connected to the information inputs of the first, second, .., Nth instant memory blocks, whose recording inputs connected to the outputs of the first, second, N-ro comparison code blocks, the output output of the waveform adjuster is connected to the second inputs of the first, second, ..., N-ro code comparison blocks, the first, second, ..., N outputs -ro RAM blocks are connected to info onnymi WMOs-dd counting inputs, respectively, lane Second, second, ..., N-ro additional counters, the counting inputs of the first, second, ..., N-ro controlled frequency dividers are connected to the additional output of the counter. Dami, respectively, of the first, second, ..., N-ro digital-analog converters, the reference inputs of which are connected to the outputs of the first, second, ..., N-ro additional adders are connected to the information inputs of the first, second, respectively, ..., N-ro additional digital-to-analog converters, the reference inputs of which are connected to the output of the scaler, the control input of the phase modulation setter is connected to the first output of the mode setter, the second output of which is connected to the control input of the setpoint generator bulk modulation, characterized in that, in order to extend the functionality by providing independent five signals, the division factor adjuster, nepBbrt, the second, ..., Nth controlled frequency dividers and the first, second, ..., Nth additional counters, whose outputs are connected to the corresponding inputs of the phase modulation setpoint generator and the corresponding the inputs of the setpoint generator of amplitude modulations, the first, BTopo, NA outputs of the setting unit of the division factors are connected to the information inputs of the first, second, ..., nd controlled frequency dividers, the outputs of which are connected to counting inputs, respectively Second, second, ..., N-ro additional counters, the counting inputs of the first, second, ..., N-ro controlled frequency dividers are connected to the additional output of the counter.