Method and device for detecting standing-wave ratio

Abstract

The invention discloses a method and device for detecting a standing-wave ratio. The method specifically comprises the steps of: obtaining launching signals and a third delay among the launching signals on the basis of the launching signals and a first delay among incident signals corresponding to the launching signals as well as the launching signals and a second delay among reflective signals corresponding to the launching signals; determining a part corresponding to the reflective signals as an Nth part in the plurality of parts and obtaining the reflective coefficient corresponding to the Nth part on the basis of the third delay and the part delay of each part of the plurality of parts, wherein N is an integer greater than 1; and obtaining the standing-wave ratio of the Nth part on the basis of the reflective coefficient. According to the method, the standing-wave ratio can be calculated precisely so as to further measure signal match conditions among the parts in a signal transmission path precisely.

Description

technical field [0001] The present application relates to the communication field, in particular, to a method and device for detecting standing wave ratio. Background technique [0002] Standing wave ratio is called voltage standing wave ratio, also known as VSWR and SWR, which is the abbreviation of English Voltage Standing Wave Ratio. Where the incident wave and the reflected wave have the same phase, the voltage amplitude adds up to the maximum voltage amplitude, forming an antinode; where the incident wave and the reflected wave have opposite phases, the voltage amplitude subtracts to the minimum voltage amplitude, forming a node, and other points The amplitude value is between the antinode and the node, and this synthetic wave becomes a standing wave. The standing wave ratio is the ratio of the voltage amplitude at the antinode of the standing wave to the voltage amplitude at the node. [0003] In radio communication, if the impedance of the antenna and the feeder doe...

AI Technical Summary

Problems solved by technology

[0025] First of all, the traditional standing wave ratio scalar detection method has great limitations, and it is difficult to obtain accurate and high-precision standing wave ratio detection values ​​in practice;

[0026] Secondly, the traditional standing wave ratio scalar detection method uses the method of calculating the return loss to reflect whether the entire radio wave transmitting station and the antenna match, and it cannot test which part has a problem with the matching during the signal transmission process, and which part has a problem. Parts are poorly matched, i.e. segment detection is not possible

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