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Two-part electromagnetic radiation shielding device for mounting printed circuit board

A technology for electromagnetic radiation shielding and printed circuit boards, which is applied in the fields of magnetic field/electric field shielding, electrical components, etc., and can solve problems such as inability to meet electromagnetic compatibility.

Inactive Publication Date: 2004-09-29
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Due to the current tendency to use frequencies in the gigahertz range, and due to the increase in government regulations on stray electromagnetic fields from devices such as mobile or cordless telephones and (small) base stations used indoors, commercially available shielding devices are not adequate Future stringent electromagnetic compatibility (EMC) requirements

Method used

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  • Two-part electromagnetic radiation shielding device for mounting printed circuit board
  • Two-part electromagnetic radiation shielding device for mounting printed circuit board
  • Two-part electromagnetic radiation shielding device for mounting printed circuit board

Examples

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Embodiment Construction

[0033] The invention is now described and explained by means of a preferred embodiment, without intending to be limited thereto.

[0034] figure 1 A closed enclosure or cover 1 according to the invention is shown in perspective, having a closed solid top surface 2 and four closed solid perimeters 3 connected to the top surface 2 . These perimeters 3 are provided with an inclined step 4, which makes the part of the housing 1 between the top surface 2 and the inclined step 4 smaller in size than the part of the housing 1 connected to the inclined step 4 and the free edge 5 of the perimeter 3 size of.

[0035] figure 2 A substantially open frame member 6 of the invention is shown having four peripheries 7 from which separate elastic teeth 8 project. These resilient teeth 8 are separated by grooves 9 and have a shallow V shape with the open part of the V facing the outside of the frame member 6, as shown.

[0036] image 3Shown are the cover part 1 and the frame part 6 in an...

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PUM

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Abstract

The invention relates to a two-part electromagnetic radiation shielding device (10), which is fixed on a printed circuit board, the periphery (7, 3) of a frame part and an outsides cover part (6, 1) is equipped with a shape, which ensures that a sustained retaining power is capable of being applied when using, thereby an electrical contact (13) of the periphery is convenient to be built and kept on a clinging edge (5, 11) of the periphery (3, 7) of the above two components between the frame part and the outsides cover part (6, 1). The device provides a separated mechanical (14 ) and electrical (13) connection, thereby achieving a best shielding of electromagnetic compatibility.

Description

technical field [0001] The invention relates to electromagnetic radiation shielding technology, in particular to a device for shielding electrical or electronic components on a printed circuit board (PCB). Background technique [0002] In current telecommunication systems, especially in cellular cordless wireless telecommunication systems, radio transceivers operating in the gigahertz (GHz) radio frequency (RF) band are used. [0003] It is known that electrical or electronic components or equipment and devices in the vicinity of sources of electromagnetic radiation will malfunction if they are disturbed by a certain level of electromagnetic radiation. [0004] In order to avoid as far as possible the unnecessary influence of electromagnetic radiation on oscillators in telecommunication transceivers or other devices operating in the RF frequency band, it is known to place radiation sources or other devices, such as transceivers containing radiation sources Enclosed in a sui...

Claims

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Application Information

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IPC IPC(8): H05K9/00
CPCH05K9/0032H05K9/00
Inventor J·特里
Owner TELEFON AB LM ERICSSON (PUBL)
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