Radio-frequency signal calibration method based on virtual channels

A technology of radio frequency signals and virtual channels, which is applied in the directions of communication channel monitoring, transmission monitoring, electrical components, etc., can solve problems such as the inability to interfere with channel calibration accuracy, and achieve the effects of reduced maintenance costs, clear division of labor, and easy operation

Active Publication Date: 2015-08-19
CHINA ELECTRONIS TECH INSTR CO LTD
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Problems solved by technology

Testers cannot intervene in the accuracy of channel calibration and select the appropriate error correction algorithm according to the actual test situation

Method used

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  • Radio-frequency signal calibration method based on virtual channels
  • Radio-frequency signal calibration method based on virtual channels
  • Radio-frequency signal calibration method based on virtual channels

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Embodiment Construction

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0034] At present, the calibration of the automatic test system channel is mainly realized by coding or platformization. Their principles are basically the same. They are all based on the attenuation value generated by the radio frequency signal in the channel transmission as the data source, and calculated in a certain way. Channel errors, and finally the stimulus or measurement results are compensated during the test.

[0035] The invention proposes a...

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Abstract

The invention provides a radio-frequency signal calibration method based on virtual channels, comprising a channel modeling module, a channel calibration module, an error correction module and an information management module. First, the channel modeling module is run to establish a virtual channel model for channels ready for calibration, and channel model information is synchronized to the information management module; the channel calibration module is run to calibrate all the channels; a calibration program generating guide is provided for a user according to the channel model information; a calibration program generated by the guide is run to obtain calibration data, and the calibration data is synchronized to the information management module; then, the error correction module is run; and finally, an error correction algorithm interface function is called during running of a test program to obtain a radio-frequency signal compensation value at a specified frequency of a specified channel to compensate channel calibration error in the process of testing. All the modules have clear functions, operation is simple and convenient, channel management and error correction are completely open, and the channel calibration needs of a test system in different stages are met through extension.

Description

technical field [0001] The invention relates to the technical field of testing, in particular to a radio frequency signal calibration method based on a virtual channel. Background technique [0002] In the automatic test system, the RF input and output signals have to go through a series of channels composed of connecting cables, switches and adapters, and the channel error will be the main source of the test error of the entire automatic test system. The channel calibration technology can effectively compensate the attenuation of the RF input and output signals during transmission, reduce the error caused by the system's own factors, and improve the accuracy and reliability of the test. [0003] At present, there are no relevant verification regulations and calibration specifications for channel calibration of automatic test systems in China, so the channel calibration methods used by many automatic test systems are designed for specific channels of their own systems. At p...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/391H04B17/30
Inventor 谭旭宋斌刘毅方鹏吴波邱田华郑艳梅王帅
Owner CHINA ELECTRONIS TECH INSTR CO LTD
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