One fourth wavelength type lighting arrester

A lightning arrester and wavelength technology, applied in the field of arresters, can solve the problems of high manufacturing cost, insufficient frequency band, large structure size, etc., and achieve the effects of superior third-order intermodulation performance, reduced manufacturing cost, and small voltage standing wave ratio.

Inactive Publication Date: 2008-11-12
镇江华坚电子有限公司
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of this structure are: 1. The frequency band is not wide enough
If the frequency bandwidth is required, the main part and the outer shell 1 will be made longer, generally λ 0 / 2 is better (λ 0 is the intermediate frequency wavelength), the structure size is relatively large, and waste materials
If the center frequency is lower, 1 / 4λ 0 The longer the short support, the more material is wasted
2. Because the outer casing 1 and the outer casings 7 and 8 are made of brass, and the price of brass is very expensive, and the specific weight is large, and the surface needs to be electroplated, so the manufacturing cost remains high

Method used

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  • One fourth wavelength type lighting arrester

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Embodiment Construction

[0016] Such as figure 1 As shown, the inner conductor 2 is installed in the shells 7, 8, and the insulators 5, 6 are installed in the shells 7, 8 respectively, and are sheathed outside the inner conductor 2. The inner conductor 3 is installed in the outer shell 1, and the outer shell 1 and the outer shells 7, 8 are vertically fixed and installed through threads, and the sealing ring 11 is used to seal the mounting place. The outer casing 1 and the outer casings 7 and 8 are made of brass at the threaded connection parts, and the other parts are made of aluminum.

[0017] During processing, the casings 7 and 8 are made of aluminum alloy, and the casing 1 is processed with hexagonal or quadrangular aluminum materials. The processing process of the outer casing 1 and the outer casing 7, 8 is as follows: After the aluminum parts of the outer casing 1 and the outer casing 7, 8 are processed and formed, the oil stains left in the processing engineering are cleaned, otherwise the sur...

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Abstract

The invention discloses a one-fourth wavelength arrester consisting of the following steps: an inner conductor is arranged in a shell; an inner conductor is arranged in a shell body; the shell body is perpendicularly and fixedly connected with the shell by a screw thread; brass material is adopted in the threaded connecting part between the shell body and the shell; other parts adopt aluminum material. As the structure of combining brass and aluminum is adopted in the shell body and the shell, the arrester has the advantages of light weight, manufacturing cost being reduced by one-fifth, low voltage standing wave ratio, outstanding third-order intermodulation and good air tightness. The characteristic impedance of the arrester is 50 ohm and the work center frequency of the arrester is 880 MHz.

Description

technical field [0001] The invention relates to a lightning arrester, in particular to a 1 / 4 wavelength type lightning arrester, which is mainly used in a microwave signal transmission system to prevent lightning pulse current from damaging communication equipment. Background technique [0002] Lightning is very harmful to human beings. The pulsating current induced by lightning pulses can damage communication equipment and cause communication interruption. At present, a lightning arrester is usually connected to the transmission line between the antenna and the equipment to guide the lightning pulsating current into the ground. It does not affect the normal transmission of cross-frequency signals in communication. [0003] At present, gas discharge tube arresters, Qualcomm Archimedes spiral arresters and 1 / 4 wavelength arresters are more common in coaxial arrester series. Among them, gas discharge tube arresters cannot charge and discharge too many times and have a short se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01T19/00H01T4/00
Inventor 戴志坚冯良平
Owner 镇江华坚电子有限公司
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