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Plastic shielding cover board

A shielding cover and plastic technology, applied in the fields of magnetic field/electric field shielding, electrical components, etc., can solve the problems of the large number of metal spacer assembled cover plates, the difficult processing of metal die-casting cover plates, and the difficulty of installation and operation. Electromagnetic shielding effectiveness, simple structure, and weight reduction effect

Inactive Publication Date: 2008-04-09
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 2) Metal die-casting cover plate processing is difficult and expensive;
[0006] 3) There are a lot of metal spacer assembly cover plates, and there are gaps in the spacer splicing itself during installation, which reduces the shielding effectiveness, makes the installation operation difficult, and the efficiency is low

Method used

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  • Plastic shielding cover board
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Embodiment Construction

[0021] The conductive plastic shielding cover plate proposed by the present invention is shown in accompanying drawings 2 and 3, and the installation of the conductive plastic cover plate is shown in accompanying drawing 1. Its main features and functions are as follows:

[0022] The conductive plastic cover plate is used in the radio frequency, difference frequency and amplifying circuit of the radio frequency power amplifier, which plays a dual role of protection and electromagnetic shielding. The conductive plastic shielding cover plate has the following characteristics: the material of the cover plate is made of conductive plastic, and conductive fibers and particles are added to the plastic base material. The plastic base material is polycarbonate PC, engineering plastic ABS, polypropylene PP, etc. Molecular materials, conductive fibers and particles are stainless steel fibers, aluminum alloy fibers, nickel-plated carbon fibers, nickel powder, carbon powder, graphite, etc....

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Abstract

The invention discloses a plastic shielding cover board, which is made of conductive plastic part by injection molding. The shielding cover board provided by the invention is a conductive plastic part as a whole, and uses the conductive plastic in the protection and shielding of radio-frequency circuit PCB, which is an innovation. The conductive plastic cover board has the advantages of simple structure, processing difficulty reduction, processing efficiency improvement, direct using after injection molding; system weight decrease, lower cost; electromagnetic shielding effectiveness improvement and circuit system performance improvement by absorbing function.

Description

technical field [0001] The invention relates to structural shielding in the field of mobile communication, in particular to a plastic shielding cover suitable for circuit protection and electromagnetic shielding of PCB boards in the field of mobile communication. Background technique [0002] In the field of mobile communication, the structure of the shielding cover is widely used in the radio frequency, difference frequency and amplifying circuits of the RF power amplifier. The shielding cover has dual functions of protecting the circuit and electromagnetic shielding. The currently widely used shielding cover is an integral metal die-casting cover or a cover composed of metal spacers assembled. The metal die-casting cover is an integral cover produced by machining or mold die-casting, and is directly installed on the PCB of the RF power amplifier; the metal spacer is assembled by machining the spacer and cover, and then on the PCB Install it on the top and assemble it into...

Claims

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Application Information

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IPC IPC(8): H05K9/00C08K7/04C08L69/00C08L55/02C08L23/12
Inventor 白如冰陈勇高海波
Owner ZTE CORP
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