SU1167542A1 - Device for automatic measuring and recording of phase characteristics of radiating apertures - Google Patents

Abstract

DEVICE FOR AUTOMATIC MEASUREMENT AND RECORDING OF PHASE CHARACTERISTICS OF RADIATING APERTURES, containing a microwave generator connected through a power divider to the radiating aperture, the indicator probe, which can be interchangeably connected and connected to the co-ordinate sensor, a phase layer, which has a phase layer, a component with a phase sensor, a phase layer, a layer, a layer, a phase layer, a layer, a layer, a layer, a layer, a layer, a fugitive layer, a layer, a fugitive, and a phase, a single-phase device connected to the coordinate sensor, connected to a coordinate aperture, connected to the emitting aperture, and connected to the coordinate sensor, and connected to a coordinate aperture; the input of the microwave bridge, and the recorder, the first input of which is connected to a coordinate sensor, characterized in that, in order to improve measurement accuracy, between the output of the microwave bridge and the second input of the recorder A synchronous detector, a first selective amplifier, a frequency multiplier by two and a phase detector, between the second input of which and the output of the synchronous detector, included a second selective low-frequency amplifier, the microwave bridge input connected to the second output of the power splitter and the phase modulator input connected to the output of the indicator probe.

Description

ABOUT

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The invention relates to radio engineering, in particular to the technique of antenna measurements.

The purpose of the invention is to increase the measurement accuracy.

The drawing shows the structural electrical circuit of the device for automatically measuring and recording the phase characteristics of the radiating apertures.

. The device for automatically measuring and recording the phase characteristics of the radiating apertures contains a microwave generator 1 connected via a power divider 2 to a radiating aperture 3, an indicator probe 4 mounted — displaceable, a phase modulator 5, a coordinate sensor 6 connected to the indicator probe 4, Microwave bridge 7, connected to power divider 2, connected to microwave bridge 7, synchronous detector 8, first and second selective amplifiers 9 and 10 of low frequency, the inputs of which are connected to the output of synchronous detector 8, are set enny at the output of the first selective amplifier 9, low frequency frequency multiplier 11, whose output is coupled to a first input of the phase detector 12, 10 of the second low frequency selective amplifier output coupled to a second input of the phase detector

12, the output of the phase detector 12 podk. Exact to the second input of the recorder

13, the first input of which is connected

with sensor 6 coordinates. The motor 14 is designed to set the phase modulator 5 in the mode of continuous phase modulation.

A device for automatically measuring and recording the phase characteristics of the radiating apertures operates as follows.

The signal from the microwave generator 1 is fed to the power divider 2, from the first output of which part of the power is fed to the radiating aperture 3, and from the second output through the SCHU bridge 7 to the synchronous detector 8. The signal passed from the output of the microwave generator 1 to the input of the synchronous detector B, is described by the expression

675422

Up A cosu) t. From the second output of the microwave bridge 7, the signal passes through the phase modulator 5, receiving an increment in frequency by the amount of Si

5 (since the phase modulator 5 is switched to the continuous phase modulation mode by means of the electric motor 14), and through the segment 15 of the microwave path falls on the indicator probe 4, is reflected from it due to some mismatch with the segment 15 of the microwave path and passes the path to the input of the synchronous detector B. Math. This signal is described

s by the expression U, (u) + 2SI) t + + 2-t + 20J, where i. - phase instability due to the cut 15 of the microwave path connecting the phase modulator 5 and the 4: 9 indicator probe - the initial phase of the signal received by the electric motor 14. The measuring signal from the indicating probe 4 located in front of the radiating aperture 3 also enters

5 to the input of the synchronous detector B and has the form UHJ Aiesos (o; + fi (L) t + + 4+ i + e, where H is the measured phase characteristic of the radiating aperture 3. As the heterodyne signal of the synchronous detector 8 is used as the heterodyne signal of the synchronous detector 8 U, then the output of the synchronous detector 8 produces two useful signals, one of which, described by the expression Uj Af cos (L t + H + i + e), is fed to the first selective low-frequency amplifier 9 tuned to frequency 57 passes through the multiplier 11 frequency for two, the output of which appears the signal of the form IL

 And cos (2S2t + 2V + 2-Ь + 29) arriving at the first input of the phase detector 12. The second signal of the type U A4Cos (+ 2 (f + 2C + 2Q) passes through the tuning to the frequency 2 I am the second selective amplifier 10 low frequency and enters to the second input of the phase detector 12. At the output of the one-time detector 12,

Q information on double phase 2 received by indicator probe 4 signals

;

Recorded using the recorder 14 ..

Claims (1)

, DEVICE FOR AUTOMATIC MEASUREMENT AND RECORDING OF PHASE CHARACTERISTICS OF RADIATING APERTURES, containing a microwave generator connected through a power divider to a radiating aperture, an indicator probe mounted with the ability to move and connected to a coordinate sensor, a phase modulator, the output of which is connected to the first input by a microwave input and a recorder, the first input of which is connected to a coordinate sensor, characterized in that, in order to increase the accuracy of measurements, between the output of the microwave bridge and the second input of the serial recorder A synchronous detector, a first selective amplifier, a frequency multiplier for two and a phase detector are included, between the second input of which and the output of the synchronous detector, a second selective low-frequency amplifier is connected, the microwave bridge input connected to the second output of the power divider and the phase modulator input connected to the output of the indicator probe.