A kind of ku-band multi-branch power amplifier phase difference automatic testing device and method

A power amplifier, automated testing technology, applied in the measurement device, the phase angle between voltage and current, instruments and other directions, can solve the problems of large measurement workload, low data accuracy, low measurement efficiency, etc., to achieve the measurement workload The effect of small size, high data accuracy and high measurement efficiency

Active Publication Date: 2017-03-15
BEIJING INST OF RADIO MEASUREMENT
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a method that solves the problems of heavy measurement workload, inconvenient operation, low measurement efficiency and low data accuracy of the traditional method.

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  • A kind of ku-band multi-branch power amplifier phase difference automatic testing device and method

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Embodiment 1

[0040] Such as figure 1 As shown, a Ku-band multi-branch power amplifier phase difference automatic testing device includes a single-pole three-throw switch 1, a signal conditioning unit 2, a data acquisition unit 3, a control unit 4 and a frequency synthesizer;

[0041] The single-pole three-throw switch 1 is connected with three input terminals of the multi-branch power amplifier 5 under test respectively, and is used to switch the power of different branches in the multi-branch power amplifier 5 under test. amplifier;

[0042] The signal conditioning unit 2, whose input terminal is connected to the output terminal of the multi-branch power amplifier under test, is used to convert the power data output by the multi-branch power amplifier 5 under test to obtain a data acquisition unit conforming to 3 Acquisition of standard power levels;

[0043] Described data acquisition unit 3, its input end is connected with the output end of signal conditioning unit 2, and its output e...

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Abstract

The invention relates to a device and a method for automatically testing Ku waveband phase difference of a multi-branch power amplifier. The device comprises a single-pole three-throw switch, a signal conditioning unit, a data acquisition unit, a control unit and a frequency synthesizer, wherein the single-pole three-throw switch is used for switching a power amplifier in the tested multi-branch power amplifier; the signal conditioning unit is used for converting power data output by the tested multi-branch power amplifier, and a power level meeting the acquisition standard of the data acquisition unit is obtained; the data acquisition unit is used for acquiring power data and sending the acquired power data to the control unit; the control unit is used for sending a control signal to the frequency synthesizer; the frequency synthesizer is used for performing frequency ascending on microwave signals synthesized in two ways according to a control signal, and microwave signals of a Ku waveband are obtained. The measuring efficiency is high, and the data accuracy is high.

Description

technical field [0001] The invention relates to an automatic phase difference test assembly, in particular to a phase difference automatic test device and method for a Ku-band multi-branch power amplifier. Background technique [0002] Phase equalization plays an extremely important role in multi-branch power synthesis amplifiers. In multi-branch power amplifiers, it is determined by the circuit characteristics of microwave power amplifiers, especially electric vacuum power amplifiers, and the phase shift is relatively large in its operating frequency band; According to the principle of power vector superposition, in the power combiner, the combination efficiency will be greatly reduced due to the phase deviation, resulting in a decrease in output power and an increase in power consumption. At this stage, in order to solve this problem, vector network analyzers are often used to test and record the power amplifiers of each branch one by one, and then compensate through the f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R25/00
Inventor 张萧汪蔚霞
Owner BEIJING INST OF RADIO MEASUREMENT
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