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Amplifier AM-AM distortion measurement method and system for base station

An AM-AM and base station system technology, applied in the field of amplifier AM-AM distortion measurement methods and systems, can solve the problems of temperature offset characteristics, large radiation dose, and the inability to directly describe the AM-AM curve, etc., to achieve accurate test results Intuitive, easy-to-operate effects

Pending Publication Date: 2022-03-15
RAISECOM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method cannot directly describe the AM-AM curve. All the data are obtained through peak-to-average ratio compression statistics. During the entire test process, the amplifier works in a high-power state, the temperature offset characteristics will be affected, and the radiation dose is extremely large.

Method used

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  • Amplifier AM-AM distortion measurement method and system for base station
  • Amplifier AM-AM distortion measurement method and system for base station
  • Amplifier AM-AM distortion measurement method and system for base station

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Embodiment 1

[0048] figure 2 It is a schematic diagram of an amplifier AM-AM distortion measurement system applicable to a base station provided in Embodiment 1 of the present application. Such as figure 2 As shown, the system is used to perform AM-AM test with the base station amplifier as the test object, the whole test process is automated, the operation is simple and the test result is accurate and intuitive. Such as figure 2 As shown, the system includes: a signal generation unit, a first switch SPDT1, a second switch SPDT2, a signal analysis unit, a control unit and a power supply unit, wherein:

[0049] In the signal generation unit, the output end is connected to the common end of the first switch SPDT1, the input end is connected to the control unit, and after the determined test signal is modulated to the current basic power signal, it is output from the output end according to the current output signal frequency;

[0050] The control terminal of the first switch SPDT1 is c...

Embodiment 2

[0057] image 3 It is a flow chart of the AM-AM distortion test method for amplifiers applicable to base stations provided in Embodiment 2 of the present application. image 3 The shown method is based on the test system described in Embodiment 1. The present application provides an amplifier AM-AM distortion test method applicable to a base station. The test method is simple to implement and the test result is accurate and intuitive. Such as image 3 As shown, the test method includes:

[0058] Step 100: In the control unit, predetermine each frequency point to be tested by the test object and the initial value of the basic signal power used for signal modulation;

[0059] In this step, each frequency point is selected according to the scene frequency band used by the base station amplifier as the test object, and a certain number of frequency points are selected as test points based on the interval between the maximum value and the minimum value of the frequency band. For ...

Embodiment 3

[0084] Due to the current network environment, the base station system may have a power dynamic range due to back-off power usage, and may also have a power dynamic range due to certain specific scenarios, for example, in an FDD-LTE (Frequency Division Duplex LTE) system , the total power dynamic range between ETM3.1 and ETM2.0 is 20dB, plus the signal PAR=8dB requirement on the base station amplifier, the actual power dynamic range of the base station amplifier at this time is: 28dB. Therefore, in the present application, the above-mentioned embodiment 2 is improved so that AM-AM test can be performed on the base station amplifier that needs to be applied in the power dynamic range application scenario.

[0085] Figure 6 It is a flow chart of the AM-AM distortion test method for amplifiers applicable to base stations provided in Embodiment 3 of the present application. Figure 6 The shown method is based on the test system described in Embodiment 1. The present application ...

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Abstract

The embodiment of the invention discloses an amplifier AM-AM distortion measurement method and system capable of being used for a base station. In the method, a base station amplifier is used as a test object, and the method comprises the following steps: step 01, determining the frequency of a test signal, and generating the test signal of the frequency; 02, acquiring a first power curve TR1 corresponding to the test signal; step 03, taking the test signal as an input signal of a test object, and obtaining a second power curve TR2 corresponding to an output signal of the test object; step 04, determining a gain curve TR3 of the test object according to the first power curve TR1 and the second power curve TR2; and 05, when the P-6 theoretical value of the test object exists on the gain curve TR3, determining that the gain curve TR3 is the AM-AM curve at the frequency.

Description

technical field [0001] The embodiment of the present application relates to the field of electronic technology, in particular to a method and system for measuring AM-AM distortion of an amplifier that can be used in a base station. Background technique [0002] Amplifier is a key component of wireless base station (including macro base station and micro base station). It is extremely important for its working status, including voltage, current and temperature monitoring and working bias voltage setting, which is related to the stability of system communication and long-term reliability. , and even communication performance, therefore, it is particularly important for the base station design and production process to determine the performance index of the base station amplifier through performance testing, so as to select a suitable base station amplifier. [0003] In the prior art, the performance test of amplifiers that can be used in base stations mainly focuses on the AM-...

Claims

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Application Information

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IPC IPC(8): G01R23/20G01R27/28G01R27/30
CPCG01R23/20G01R27/28G01R27/30Y02D30/70
Inventor 李昕
Owner RAISECOM TECH
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