Power amplifier linearity dynamic check method

A power amplifier and dynamic verification technology, applied in the direction of improving amplifiers to improve efficiency, etc., can solve the problems of difficult to achieve high linearity requirements, poor adjustment accuracy, etc., and achieve the effect of improving linearity and improving linearity.

Inactive Publication Date: 2013-03-20
QISDA SUZHOU
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Problems solved by technology

At present, the most commonly used calibration method is the method of changing the step size, that is, when scanning the power range of the power amplifier with a certain step size, if the linearity of points in some ranges in the power range is low, it will redefine Another step length scans the power range until the linearity is relatively improved. However, the adjustment accuracy of this method is poor, and it is difficult to meet the high linearity requirement.

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  • Power amplifier linearity dynamic check method
  • Power amplifier linearity dynamic check method
  • Power amplifier linearity dynamic check method

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Embodiment Construction

[0018] In order to have a further understanding of the purpose, structure, features, and functions of the present invention, the following detailed descriptions are provided in conjunction with the embodiments.

[0019] Please see figure 1 , figure 1 It is a flow chart of the dynamic verification method for the linearity of the power amplifier of the present invention. The linearity dynamic checking method of power amplifier of the present invention comprises the following steps:

[0020] S1: Set scanning parameters.

[0021] The scanning device is provided with an xml file, which can be used to set the scanning range, the scanning step size and the opening and closing of the scanning switch. In S1, the scan range is set to the first power range, the second power range and the third power range of the power amplifier, and the set of each power range is equal to the power range of the power amplifier; the scan step is set to the first step length, And the scan switch is set...

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Abstract

The invention provides a power amplifier linearity dynamic check method which comprises the step A of getting a point according to a first step length to scan a first power range, a second power range and a third power range of a power amplifier; the step B of confirming power of the first power range and a first nonlinearity range of a pulse duration modulation (PDM) curve; the step C of confirming a first point getting range; the step D of getting points; the step E of using the method of the step B to the step D to confirm a second nonlinearity range and a second point getting range corresponding to the second power range and get points and confirm a third nonlinearity range and a third point getting range corresponding to the third power range and get points; and the step F of choosing a plurality of points of the step A, the step D and the step E to store. The method uses points chosen with different step lengths as points written into mobile phone network variable (NV) and improves linearity of mobile phone power amplifiers.

Description

technical field [0001] The invention relates to a linearity dynamic calibration method, in particular to a linearity dynamic calibration method of a power amplifier. Background technique [0002] In the production process of communication products, since the power amplifier (PA) is not highly linear, some points within a certain range are highly non-linear during the calibration process. Only by processing can the performance of the communication products produced be better. At present, the most commonly used calibration method is the method of changing the step size, that is, when scanning the power range of the power amplifier with a certain step size, if the linearity of points in some ranges in the power range is low, it will redefine Another step length scans the power range until the linearity is relatively improved. However, the adjustment accuracy of this method is poor, and it is difficult to meet the high linearity requirement. Contents of the invention [0003...

Claims

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Application Information

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IPC IPC(8): H03F1/02
Inventor董其亮
OwnerQISDA SUZHOU