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Production calibration method and apparatus for TD-SCDMA radio frequency power amplifier

A technology of TD-SCDMA and radio frequency power, which is applied in the field of production calibration of radio frequency power amplifiers of TD-SCDMA mobile phones, and can solve the problems of unsuitable calibration speed requirements, slow calibration speed, and power amplifiers not providing calibration methods, etc.

Inactive Publication Date: 2007-05-30
VIMICRO CORP
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Problems solved by technology

Although manual point-by-point calibration has a high calibration accuracy for power amplifiers, but the number of calibration points is large, it takes a lot of time and the calibration speed is slow, which is not suitable for mass production. Calibration speed requirements
The current TD-SCDMA protocol does not provide a standard calibration method for RF power amplifiers, and PA (power amplifier) ​​manufacturers have not provided reference calibration methods and corresponding devices

Method used

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  • Production calibration method and apparatus for TD-SCDMA radio frequency power amplifier
  • Production calibration method and apparatus for TD-SCDMA radio frequency power amplifier
  • Production calibration method and apparatus for TD-SCDMA radio frequency power amplifier

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Embodiment Construction

[0057] According to the provisions of the TD-SCDMA agreement, the calibration range of the output power of the radio frequency power amplifier is -50dBm~24dBm, and the error requirement is within 1dB. Calibrate less points in the middle, and then automatically calibrate the remaining points in the calibration range of the output power of the RF power amplifier according to the pre-calibrated points, so as to achieve the purpose of faster calibration speed. In the present invention, it is said that within the calibration range of the output power of the RF power amplifier, the P out The (output power) value is a characteristic value, and in the calibration range of the output power of the RF power amplifier, other output power values ​​other than the pre-calibration are automatically calibrated using the curve fitting formula.

[0058] According to a large number of experiments, the method of pre-manual calibration of 3 points is the most accurate and fastest calibration method...

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Abstract

This invention discloses one TD-SCDMA radio frequency amplifier production and correction method and device, wherein, it selects upper limit characteristics value in the radio power amplifier output power correction range and down value and the third characteristics value in between and corrects their relative correction point to get the above values relative automatic power control values.

Description

technical field [0001] The invention relates to a calibration method and device of a power amplifier, in particular to a production calibration method and device of a radio frequency power amplifier of a TD-SCDMA mobile phone. Background technique [0002] The radio frequency power amplifier of the TD-SCDMA mobile phone is the last stage on the transmission link of the TD-SCDMA mobile phone. Its main function is to amplify the radio frequency signal to a certain power, so as to ensure the connection between the mobile phone and the base station. In order to ensure that the output power of each mobile phone can meet the requirements for the output power of mobile phones in the TD-SCDMA protocol standard, each mobile phone must be calibrated before leaving the factory. The calibration of the TD-SCDMA RF power amplifier is actually to find the automatic power control (APC) and the output power of the power amplifier (P out )Relationship. After finding this relationship, accor...

Claims

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Application Information

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IPC IPC(8): H04B7/005H04B17/00
Inventor 郭为
Owner VIMICRO CORP
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