SU1646052A1 - Device for generating in-phase signals at specially separated points - Google Patents

Abstract

The invention relates to radio engineering. The aim of the invention is to improve the accuracy of phasing. The device contains the first and second generators 1 and 2 of the clock signals, the communication line 3, the master oscillator 7, the phased amplifying channels 8. To improve the phasing accuracy, two breakers 4 and 5 of the clock signals and the generator of control pulses are introduced into the device, and amplifying channel 8 a sync signal switch 18 and a memory element 14 are inserted, which makes it possible to reduce the component of the phasing error due to the parasitic signal connected to the phase synchronizer 13 associated with the counter sync signal from the heterogeneous in the communication line 3. 1 Il. g kn

Description

The invention relates to the field of radio engineering and can be used in multichannel transmitters, receivers and interferometers with spatially separated channels.

The aim of the invention is to improve the accuracy of phasing.

The drawing shows a block diagram of a device for forming in-phase signals in spatially separated points.

The device for generating common-mode signals in spatially separated points contains the first and second generators 1 and 2 of the sync signals, the line

3cv zi, first and second breakers

4 and 5 clock signals, a control pulse generator 6, a master oscillator 7 and amplifying channels 8. Each amplifying channel 8 contains a controlled phase shifter 9, an amplifier 10, a power divider G1, a frequency doubler 12, a phase meter 13, a memory element 14, an adder 15, the first and second directional couplers 16 and 17 and the switch 18 clock signals.

The device works as follows.

Synchronous oscillators 1 and 2 and master oscillator 7 coherently generate frequency signals (and oscillator 6 generates control signals of two levels, for example, in a square-wave mode. With a high potential signal at the output of oscillator 6, the elements connected to it are

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The following states: the first sync signal switch 4 is closed, the second sync signal switch 5 is open, and in each amplifier channel 8 the sync signal switch 18 connects the output of the first directional coupler t6 to the second input of the phase meter 13, the memory element 14 is in recording mode, and the adder 15 stores at its output the value obtained in the previous cycle. When the potential of the generator output signal is low, the elements associated with it are transferred to the following states: the first breaker of the 4 sync signals is open, the second breaker of the five sync signals is closed, and in each amplifying channel 8 the switch 18 of the clock signals connects the output of the second directional coupler 17 to the second the phase meter 13, the memory element 14 is in the sampling mode, and the adder 15 changes its output signal to the corresponding sum of the signals arriving at its inputs (from the phase meter 13 and the memory element 14) in.

Denote by lf,, ty2 and (; the phases of the microwave signals at the ends of link 3 and the output of the 1st amplifying channel 8. If the L is the length of link 3, and x is the distance from its end from the first generator 1 sync signals to the junction point with the i-th channel 8, the phases of the sync signals at the x- point are equal (- (5x;) and (- / 3 (Lx.), Where ft is the phase constant of the clock signals Q frequency in line 3 z. Directional couplers 16 and 17 can extract these sync signals.

 At a high potential of the signal at the output of the generator 6 on the link 3, only the sync signal of the first generator 1 propagates, since the second sync signal switch 5 is closed. This clock signal through the first directional coupler 16 and the clock signal switch 18 goes to the second input of the phase meter 13. Phase meter 13 measures the phase difference

(4; -ty + | 3x, - afro.

where n is an arbitrary integer ,.

which is stored in memory element 14,

, J5 0 15

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When the potential of the signal at the output of the generator 6 is low, the first sync signal breaker 4 and the communication link 3 propagate only the sync signal from the second oscillator 2, which is fed to the second input of the phase meter 13 via the second directional coupler 17 and the sync switch 18. The phase difference measured by the phase meter 13 ((L-fix-i + 2 / nk), where k is an arbitrary integer, is added to the adder with the value (, + / 5x, 1) recorded in memory element 14, and the resulting value (2 (f; - (- lfe + pl 2irn + 27 k) is fed to the control input of the controlled phase shifter 9, which changes the electrical path length to it. The phase (jj | high-frequency signal at the output of the amplifier 10 of the 1st amplifying channel 8) satisfies the relation

2 - V, - (| / 2 + / 3L + 2iT (n + k) C

and, since the phase of the microwave signal at the output of the frequency doubler 12 is just 2Cf; then its value 2 (; (, + ф2- - A L-2 ft (n + k) does not depend, up to an integer number of periods, from The x coordinates of channel 8, i.e., the high-frequency output signals (at the load inputs) of all channels 8 are in-phase, as required to achieve the target.

Claims (1)

Invention Formula An in-phase shaping device in spatially separated points, containing a first and second clock signal generators, a communication line, a master oscillator and amplifying channels, each of which has a controlled phase shifter, amplifier, power divider and frequency doubler connected to the master oscillator output, another divider output power is connected to the first input of the phase meter, the output of which through the adder is connected to the control input of the controlled phase shifter and also connected to The first and second directional couplers are characterized by the fact that, in order to increase the phasing accuracy, two sync breakers and a control pulse generator are inserted into it, and the first and second memory switches and the memory element are inserted into each amplifying channel. clock generators are connected to the corresponding ends of the communication line through corresponding clock breakers, in each amplifying channel the memory element is connected between the phase meter output and the second input of the adder, the first and the second inputs of the switch sync  The signals are connected to the outputs of the respective directional couplers, and the output of the clock switch is connected to the second input of the phase meter, the control inputs of the adder, the memory element and the clock switch of each amplifying channel, and the control inputs of the sync breakers are connected to the output of the control pulse generator.