A general power amplifier automatic test system and its automatic test method
A technology of power amplifier and automatic testing, which is applied in the direction of electronic circuit testing, etc. It can solve the problems of inaccurate test results, long test time, and misremembered data, so as to simplify the follow-up processing and drawing work, avoid complex operations and man-made, high-efficiency The effect of stability
Inactive Publication Date: 2019-02-15
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology
This kind of test method is slow, time-consuming and laborious; and because the test time is too long, the state of the power tube in the middle and later stages of the test will cause inaccurate test results due to heat and other reasons; manual operation is also prone to misoperation, misremembered data, and wrong connections and other issues; when testing high-power power amplifiers, staying close to the power amplifier for a long time will also affect the health of the testers
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[0053] Such as figure 2 As shown, the schematic flow chart of the automatic test method of the general power amplifier provided by the present invention specifically includes the following steps:
[0054] Step 1: Start and initialize the signal source, spectrum analyzer, program-controlled DC power supply, and main control computer;
[0055] Step 2: Determine whether the signal source needs to be calibrated. If calibration is required, connect the signal source to the spectrum analyzer, set the spectrum range to be calibrated in the main control computer, and set the signal source to output 0dBm at the first frequency point. Single-tone signal, read the output power P0 of the spectrum analyzer, (0-P0)dB is the compensation value of the signal source at this frequency point, save the compensation value; repeat the above steps until the signal source at all frequency points is obtained Compensation value for data saving;
[0056] Step 3: Determine whether the spectrum analyze...
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A general power amplifier automatic test system and its automatic test method belong to the field of power amplifier test. The automatic test system includes a test system control module, an excitation signal generation module, a program-controlled DC power supply module, an output signal detection module and a device under test; the excitation signal generation module is connected with the device under test for generating an excitation signal; the program-controlled DC The power supply module is used to supply power to the device under test; the output signal detection module includes an attenuator and a spectrum analyzer for detecting the output signal of the device under test; the test system control module and excitation signal generation module, program-controlled DC power supply module, output signal detection The spectrum analyzer in the module is connected to realize the automatic test of the power amplifier. The invention realizes the automatic test of the power amplifier, and has the advantages of high speed, low cost, high stability and the like.
Description
technical field [0001] The invention belongs to the field of power amplifier testing, and in particular relates to a testing system and a testing method for automatically testing power amplifiers. Background technique [0002] At present, the test of the power amplifier is usually performed manually, and each frequency point needs to be measured multiple times, and considering the wiring attenuation and other issues, the wiring needs to be changed for each frequency point test, and the data is manually recorded at the same time. This kind of test method is slow, time-consuming and laborious; and because the test time is too long, the state of the power tube in the middle and later stages of the test will cause inaccurate test results due to heat and other reasons; manual operation is also prone to misoperation, misremembered data, and wrong connections and other issues; when testing high-power power amplifiers, being close to the power amplifier for a long time will also aff...
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IPC IPC(8): G01R31/28
Inventor 何松柏李啟荣代志江彭俊
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA