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Output power calibration method of radio frequency excitation source based on linear interpolation

A technology of radio frequency excitation and output power, applied in the direction of measuring devices, instruments, measuring electrical variables, etc., can solve problems such as increased hardware costs, poor production efficiency, and long calibration time

Inactive Publication Date: 2016-04-20
THE 41ST INST OF CHINA ELECTRONICS TECH GRP
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Problems solved by technology

[0010] The above-mentioned prior art for portable excitation source power calibration has long calibration time, poor production efficiency, and needs to increase hardware cost, so there is an urgent need for a new calibration method with low hardware cost requirements and high efficiency

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  • Output power calibration method of radio frequency excitation source based on linear interpolation
  • Output power calibration method of radio frequency excitation source based on linear interpolation
  • Output power calibration method of radio frequency excitation source based on linear interpolation

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Embodiment Construction

[0085] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0086] Such as Figure 3-Figure 7 As shown, the present invention provides a method for calibrating the output power of a radio frequency excitation source based on linear interpolation, which is used for quickly calibrating the output power in the frequency band. Boundary points are calibrated by dichotomy" and "frequency points in each interval are calibrated by interpolation". Embodiment The present invention is described in detail by taking the output power calibration of a radio frequency excitation source of 1MHz~6GHz as an example, the output power of the radio frequency excitation source before calibration in the calibration frequency range of 1MHz~6GHz is greater than -10dBm and less than 0dBm, After calibration, the output power of the RF excitation source is required to be -10dBm, and the error is ±0.5dBm. The described ou...

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Abstract

The invention relates to an output power calibration method of a radio frequency excitation source based on linear interpolation, and belongs to the technical field of power calibration. The method makes an improvement on the basis of a general "dichotomy" calibration algorithm, according to the requirement of calibration accuracy, determines the stepping frequency and tolerance reasonably, determines the size and position of each calibration interval in a calibration frequency band, then uses the "dichotomy" for boundary points of the intervals, and calibrates most of the remaining frequency points by way of linear interpolation. The method in the invention substantially reduces the calibration time and improves the calibration frequency while meeting the requirement of calibration accuracy.

Description

technical field [0001] The invention relates to the technical field of power calibration, in particular to an output power calibration method of a radio frequency excitation source based on linear interpolation. Background technique [0002] In electronic measuring instruments, as a multi-purpose signal source in the radio frequency band, the radio frequency excitation source is widely used in various test fields such as vector network analysis and spectrum tracking. The signal power output by the RF excitation source within its frequency range must be accurate and stable, and power calibration is an important method to achieve this goal. The whole power calibration process mainly includes two parts: one is to use cables, external control equipment, RF excitation source and power meter to build a calibration platform; the other is to use an external controller to control the RF excitation source and power through cables using a certain calibration algorithm. meter, obtain t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/00
Inventor 肖江涛韩前进李柏林苏勇辉
Owner THE 41ST INST OF CHINA ELECTRONICS TECH GRP
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