Device and method for automatically testing Ku waveband phase difference of multi-branch power amplifier

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: 2015-04-29
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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  • Device and method for automatically testing Ku waveband phase difference of multi-branch power amplifier

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Experimental program
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Embodiment 1

[0040] Such as figure 1 As shown, a Ku-band multi-branch power amplifier phase difference automated test 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 has three fixed ends respectively connected to the three input ends of the tested multi-branch power amplifier 5 for switching the power of different branches of the tested multi-branch power amplifier 5 Amplifier

[0042] The signal conditioning unit 2 has its input terminal connected to the output terminal of the tested multi-branch power amplifier, and is used to convert the power data output by the tested multi-branch power amplifier 5 to obtain a conforming data acquisition unit 3 Collect the standard power level;

[0043] The input end of the data acquisition unit 3 is connected to the output end of the signal conditioning unit 2, and its output end is connected to the signa...

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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 a phase difference automatic test component, in particular to a Ku-band multi-branch power amplifier phase difference automatic test device and method. Background technique [0002] Phase equalization plays an extremely important role in multi-branch power synthesis amplifiers. In a multi-branch power amplifier, it is determined by the circuit characteristics of the microwave power amplifier, especially the electric vacuum power amplifier, and the phase shift is relatively large in its working frequency band; According to the principle of power vector superposition, the phase deviation in the power combiner will greatly reduce the combining efficiency, 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 frequency points of the power amplifier of each branch, and then compensate by the frequency sour...

Claims

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Application Information

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