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Filter tuning method, device and system

A technology of filters and coupling coefficients, applied in waveguide-type devices, resonators, electrical components, etc., can solve the problems of low tuning accuracy and low efficiency

Active Publication Date: 2017-11-24
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this manual tuning method has the problems of low tuning accuracy and low efficiency

Method used

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  • Filter tuning method, device and system
  • Filter tuning method, device and system
  • Filter tuning method, device and system

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Embodiment Construction

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. 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] figure 1 It is a flow chart of a filter tuning method provided by an embodiment of the present invention. The main body of the method is a filter tuning device. The device can be an intelligent terminal such as a computer or a tablet computer. The method specifically includes:

[0035] S101: performing the first adjustment on each scr...

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Abstract

Embodiments of the present invention provide a filter tuning method, device, and system, the method including: first adjusting each screw in the filter in turn; judging whether the radio frequency S parameter of the filter meets the preset condition, the S parameter Including: coefficients S11 and S21, S11 is the input reflection coefficient, and S21 is the forward transmission coefficient; if not, each screw of the filter is adjusted for the second time in order to make the radio frequency S parameters meet the preset conditions; among them, Adjust any screw rod for the first time, specifically including: start to adjust the screw rod, and count the RF S parameters of the filter at each moment; judge whether the screw rod stops the first adjustment according to the coefficient S11 and the S21 at each moment, if so, Then stop the first adjustment to the screw. Through two automatic adjustments, the efficiency and accuracy of filter tuning are improved.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of filter tuning, and in particular, to a filter tuning method, device and system. Background technique [0002] A filter is a device or circuit that processes signals. Its main function is to allow useful signals to pass through without attenuation as much as possible, and to attenuate unwanted signals as much as possible. It is an indispensable key component of wireless base station products such as Remote Radio Unit (RRU for short), Radio and Filter Unit (RFU) and Active Antenna System (AAS for short). [0003] Due to differences in filter manufacturing and processing precision, uneven coating on the inner wall of the resonant cavity, etc., the local oscillator frequency of the resonant cavity changes, so it needs to be adjusted by the tuning screw on the filter to correct the local oscillator frequency of the resonant cavity. In the prior art, the tuning screw is adjusted manually ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P7/06H01P1/207
Inventor 曹伟韩维曾志锋
Owner HUAWEI TECH CO LTD