Filter and installation method thereof

A filter and cover plate technology, applied in the communication field, can solve the problem of loose tuning screw on the filter, and achieve the effect of reducing the cost of auxiliary materials

Active Publication Date: 2022-01-14
WUHAN FINGU ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a filter and its manufacturing method to solve the problem of loose tuning screw on the filter

Method used

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  • Filter and installation method thereof
  • Filter and installation method thereof
  • Filter and installation method thereof

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Embodiment Construction

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. 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.

[0032] Such as figure 2 , image 3 As shown, the filter 100 of the present invention is a metal cavity filter 100, which includes a cavity 10, the cavity 10 includes a bottom wall 101 and a side wall 102 extending from the bottom wall 101, one side of which is set to be open, and the cavity A cover plate 11 is installed on the open side of the body 10 to close the cavity 10, and the cover plate 11 and the cavity 10 are fixed by screw thread or by...

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Abstract

According to a filter and an installation method thereof, the filter comprises a cavity, one surface of the cavity is open, and a cover plate is installed on the open surface of the cavity to seal the cavity; a resonant cavity is included and is formed by separating the cavity by a partition wall arranged in the cavity; a resonant rod is included and is arranged in the resonant cavity, a tuning screw and a nut, wherein one end of the tuning screw is mounted on the cover plate, and the other end of the tuning screw extends into the resonant cavity to be matched with the resonant rod to adjust the frequency; and the tuning screw is positioned on the cover plate, a laser is used for irradiating the nut, the irradiated point of the stainless steel nut is slightly melted, melted stainless steel drops on the cover plate, and the contact position is slightly melted through heat of the stainless steel to form a welding spot (the welding spot is low in strength, and the screw is prevented from loosening and can be repaired at the same time). According to the scheme, the cost of auxiliary materials invested for preventing the screw from loosening can be effectively reduced.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a filter and an installation method thereof. [0002] technical background [0003] As a frequency-selective device, the filter is one of the indispensable devices in the wireless communication system. How to improve the electrical performance of the filter is a problem that needs to be solved urgently in the industry. [0004] At present, in mobile communication base station systems, cavity filters are commonly used to select frequencies for signals transmitted and received by antennas. The cavity filter includes a cavity body and a cover plate, and a plurality of cavities are arranged on the cavity body. A resonant rod is formed at the bottom of each cavity on the cavity. The interior of the resonant rod is hollow, forming a resonant cavity. A screw hole is opened on the cover plate at a position corresponding to the resonant cavity of the resonant rod, and a tuning sc...

Claims

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Application Information

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IPC IPC(8): H01P1/207H01P11/00
CPCH01P1/207H01P11/007
Inventor 陈斌梁傲平
Owner WUHAN FINGU ELECTRONICS TECH
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