SU1608764A1 - Device for automatic control of pattern-forming circuit - Google Patents

Abstract

The invention relates to antenna technology and can be used in communication systems. The purpose of the invention is to increase the accuracy of control of the amplitude-phase distribution. The device for automatic control of the chart-forming circuit contains feeds 1.1 - 1.N connected through directional couplers 2.1 - 2.N with controlled phase shifters 3.1 - 3.N which are connected to power addition unit 4 consisting of controlled dividers 5.1 - 5.N power, microwave switch 6, the first additional directional coupler 7, the generator 8 of the reference signal, the second additional directional coupler 9, the first analog switch 10 with memory, the control voltage generation unit 11, the second analogue comm memory knob 12, amplitude-phase discriminator 13, low-frequency switch 14, amplitude-phase distribution control unit 15, control unit 16, voltage dividing unit 17. The division factors of the controlled power dividers 5 are set by the signals of the reference signal generator 8, taking into account the signals of the amplitude-phase distribution control unit 15. The device makes accurate setting of the amplitude and phase of the microwave signal in each channel. Therefore, the signals received by the emitters 1.1-1.N are summed with the required amplitude and phase relations. 1 il.

Description

The invention relates to antenna technology and can be used in communication systems.

The purpose of the invention is to increase the accuracy of control of the amplitude-phase distribution.

The drawing shows a block diagram of an automatic control device for a diagram forming circuit (DOS).

The DOS automatic control device contains irradiators 1, directional couplers (NO) 2.1-2N, controlled phase shifters 3.1-3N, power summation unit 4, controlled power dividers 5.1-5N-1 (UDM), microwave switch 6, first additional directional coupler (BUT) 7, reference signal generator 8, second optional HO 9, first analog switch 10 with memory, control voltage generation unit 11, second analog switch 12 with memory, amplitude-phase discriminator 13, low-frequency (LF) switch 14, unit 15 control tim amplitude-phase distribution, a control unit 16, the unit 17 dividing the voltages.

The device works as follows.

The signal from the output of the generator 8 through the Loer Extra HO 7 is fed to the signal input of the Microwave Switch 6, which, by the commands of the control unit 16, alternately supplies a signal to the second inputs of the HO 2.

As a result, the signal inputs of the phasers 3 receive a signal proportional to the transfer coefficients of the respective blocks. After passing the signals through phase shifters 3, they acquire an additional phase shift and arrive at the inputs of block 4 formed by UDM 5. Next, the signal after the second additional HO 9 arrives at the output of the DOS automatic control unit and partially at one of the discriminator 13 inputs, where it is compared with the generator signal 8 reference signal.

The voltage at the first output of the discriminator 13 is proportional to the deviation of the phase shift in the i-th DOS channel from its nominal value and the value

i-ro channel transmission coefficient, which can vary under the action of destabilizing factors and as a result of controlling the amplitude distribution over a wide range. Eliminating the dependence of the error signal in the control circuit of the phase locked loop allows the voltage to be normalized from the first output of the discriminator 13 to the voltage from its second output. This normalization is carried out in the block 17 division of stresses. The signal from its output through the switch 10 with memory is fed to the control input of the phase shifter 3 i-ro channel. Under its action, the phase of the microwave signal is adjusted to the nominal value. The control of the memory switch 10 is performed by the commands of the control unit 16 and consists in

serial connection of its N outputs to the signal input, which occurs synchronously with the operation of the microwave switch 6 and the low-frequency switch 14. When adjusting the phase shift in the i-th DOS channel

the voltages at all the other outputs of the switch 10 with the memory are kept constant, the voltage from the second output of the discriminator 13 through the second switch 12 with the memory goes to the i-th signal input of the block 11. The remaining signal

the inputs of the block 11 from the corresponding outputs of the switch 12 receive voltages proportional to the transfer coefficients of the corresponding channels. The control inputs of block 11 from the corresponding outputs of block 15 receive voltages proportional to the nominal transfer coefficients of the DOS channels.

As a result of processing the input voltages by the block 11, the outputs of this block produce voltages, the magnitude and

the sign of which depends only on the magnitude and sign of the deviation of the transfer coefficients of the corresponding UDM 5 from the nominal value. The transmission coefficient of each DOS channel depends, in turn, on

dividing coefficient corresponding

UDM p controlled by block 11.

I

i

Thus, during the operation of the DOS automatic control system, the amplitude and phase of the microwave signal in each channel are precisely set. Therefore, the signals received by the 1.1-IN emitters are summed with the required amplitudes and phase relations.

Claims (1)

Invention Formula A device for automatic control of a diagonal forming circuit containing N feeds, N controlled phase shifters, the outputs of which are connected to the corresponding signal inputs of the power summation unit consisting of NI control power dividers (UDM) connected in a binary storey circuit, control unit, 1, characterized in that, in order to increase the control accuracy of the amplitude-phase distribution, each feed is connected to a controllable phase shifter 1 through an inserted directional coupler, the second input Each of the direction of the coupler is connected to the corresponding output of the input microwave switch (the input input of which through the input of the first additional directional response is connected to the output of the input reference signal generator, and the control input is connected to the output of the control unit that controls the input of each controlled phase-turn is connected to the corresponding the output of the inputted first analog switch with memory, the signal input of which is connected to the first output of the input through the input voltage dividing unit amplitude-phase discriminator, and the control input - with the output of the control unit; the control inputs of the DMM are connected to the corresponding outputs of the input control voltage generator unit, N signal inputs of which are connected to the corresponding outputs of the inputted second analog switch with memory, signal input which is connected to the second output of the amplitude-phase discriminator and the second input of the division unit voltage and the control input to the output of the control unit, the output of the power summation unit is connected to the second complementary directional coupler, the first output of which is the output of the automatic control unit DOS, and the second 0 is connected to the first signal input of the amplitude-phase discriminator, the second signal input of which is connected to the second output of the first additional directional coupler, and the first and second inputs 5 control - respectively to the first and second outputs of the input low-frequency switch, the control input of which is connected to the control unit, 2 N signal inputs of the low-frequency switch and N control inputs of the control voltage shaping unit are connected to the corresponding outputs of the input control unit amplitude-phase distribution .