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Radio frequency calibrating method and device

A radio frequency calibration and radio frequency technology, applied in the field of radio frequency calibration, can solve the problems of radio frequency calibration accuracy reduction, characteristic differences, and affecting system performance, so as to achieve the effect of improving work performance and improving accuracy

Inactive Publication Date: 2007-11-07
ST ERICSSON SEMICON BEIJING
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Problems solved by technology

In the existing RF calibration curve fitting scheme, the RF calibration unit obtains the original sampling data by sampling the parameter characteristics of the analog device, and then performs curve fitting according to the original sampling data to obtain the control signal required by the system and the output data. However, the existing scheme only uses the same curve fitting method for the same analog device, and does not consider the same analog device in different analog circuits, due to the difference in current, voltage, temperature, humidity, etc. Different working environments will cause differences in the characteristics of the same analog device
Therefore, this will inevitably lead to inaccurate curve fitting, resulting in a reduction in the accuracy of RF calibration, which will eventually affect all aspects of the performance of the entire system

Method used

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  • Radio frequency calibrating method and device

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Embodiment Construction

[0035] The radio frequency calibration method and device of the present invention, according to the distribution characteristics of the original sampling points obtained by testing the analog device, select a most suitable curve fitting method, calculate the model function of the curve, and generate a radio frequency calibration table, that is, the system requirements A list of ideal output signals and their corresponding control signals.

[0036] 1 is a structural block diagram of a radio frequency calibration device in the present invention, which includes an original sample point acquisition unit 101 , a curve fitting method judgment unit 102 , a model function calculation unit 103 and a calibration table generation unit 104 . in,

[0037] The original sample point acquisition unit 101 is used to collect the original sample points of the radio frequency analog circuit, such as control signals and controlled signals in the circuit, the control signals include voltage, contro...

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Abstract

A method for calibrating radio frequency includes collecting original sample point of radio frequency analog circuit, confirming curve fitting means according to control curve formed by original sample point and accuracy requirement of system, calculating out expression of curve model function according to curve fitting means and original sample point then generating calibration table of radio frequency according to expression of curve model function. The device used for realizing said method is also disclosed.

Description

technical field [0001] The present invention mainly relates to the field of mobile communication, in particular to a radio frequency calibration method and device. Background technique [0002] In electronic circuit systems, especially in radio frequency circuits, there are a large number of analog devices. As we all know, analog devices have a large device discreteness. For communication systems, analog devices in terminals also have large device discreteness. Therefore, in order to ensure that the radio frequency indicators of each terminal can meet the requirements of industry standards, To ensure the performance of terminals and networks, RF calibration must be performed on each terminal. In the RF calibration process, the most important thing is to choose the appropriate RF calibration curve fitting method, because it will directly affect the accuracy of RF calibration, and then affect the accuracy of the overall system gain. [0003] Among various RF calibration curv...

Claims

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Application Information

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IPC IPC(8): H04Q7/34H04B17/00H04W24/00
Inventor 于雷
Owner ST ERICSSON SEMICON BEIJING
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