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Standing wave detecting device and method thereof

A standing wave detection and wave detector technology, applied in the direction of selection device, transmission monitoring, electrical components, etc., can solve the problems of complex algorithm, large amount of preprocessing data, poor anti-interference ability and stability, etc., to improve processing efficiency and save The effect of storing resources and improving anti-interference ability

Inactive Publication Date: 2008-02-27
MOBILE ANTENNA TECH SHENZHEN
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Problems solved by technology

The existing standing wave detection circuit is composed of a directional coupler, a radio frequency switch, a wave detector and a single-chip microcomputer. However, the existing standing wave detection circuit has poor anti-interference ability and stability; Due to the difference in channel configuration, the existing standing wave detection method based on single-chip software processing calculates the standing wave ratio by obtaining the average value of forward and reverse coupling power sampling values. Therefore, the existing standing wave detection method has complex algorithms and preprocessed data. Disadvantages such as large volume and long processing time

Method used

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  • Standing wave detecting device and method thereof
  • Standing wave detecting device and method thereof
  • Standing wave detecting device and method thereof

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Embodiment Construction

[0020] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0021] According to the transmission line theory:

[0022] ρ = 1 + | Γ | 1 - | Γ | - - - ( 1 )

[0023] P FWD (dBm)-P REV (dBm) = -20logΓ (2)

[0024] In the formula: ρ is the standing wave ratio;

[0025] P FWD (dBm) is the forward signal power (ie incident power);

[0026] P REV (dBm) is the rever...

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Abstract

This invention discloses a standing-wave test device and a method, in which, the device includes two directional couplers, a radio switch, a band-pass filter, a logarithm linear detector and a SCM used in controlling said radio switch to switch and input positive and negative coupled signals to the band-pass filter in turn and receiving the DC signals output by the logarithm linear detector to sample and convert them to digital signals and get the sampled maximum values of positive and negative signal power, compute the SWR and output information of the standing-wave state.

Description

technical field [0001] The invention belongs to the field of wireless communication, and in particular relates to a standing wave detection device and method. Background technique [0002] In the field of wireless communication such as GSM and CDMA, the matching of the base station antenna feeder system and the high-power transmission system directly affects the quality of signal transmission and reception. Standing wave detection is derived from power detection technology and is a measurement and control technology used to detect matching characteristics between systems. The existing standing wave detection circuit is composed of a directional coupler, a radio frequency switch, a wave detector and a single-chip microcomputer. However, the existing standing wave detection circuit has poor anti-interference ability and stability; Due to the difference in channel configuration, the existing standing wave detection method based on single-chip software processing calculates the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/00H04Q7/34H04B17/30
Inventor 张雷林博文张伟生
Owner MOBILE ANTENNA TECH SHENZHEN
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