A method and device for detecting standing wave ratio

Abstract

Disclosed are a method for determining a member corresponding to a reflected signal and a method for detecting a standing wave ratio. The method for detecting a standing wave ratio comprises: based on a first delay between a transmission signal and an incident signal corresponding to the transmission signal, and a second delay between the transmission signal and a reflected signal corresponding to the transmission signal, obtaining a third delay between the incident signal and the reflected signal; based on the third delay and a member delay of each member of a plurality of members, determining that a member corresponding to the reflected signal in the plurality of members is the Nth member, and obtaining a reflection coefficient corresponding to the Nth member, N being an integer greater than 1; and based on the reflection coefficient, obtaining a standing wave ratio of the Nth member. Correspondingly, further disclosed is a device for determining a member corresponding to a reflected signal and a device for detecting a standing wave ratio, so as to implement the segmented detection of the standing wave ratio, guarantee the accuracy of the obtained standing wave ratio, and also obtain the condition of signal matching among the members.

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

Images