Structure for reducing electromagnetic interference and method for reducing electromagnetic interference
An electromagnetic interference and electrical technology, applied in the direction of circuits, electrical components, parts of connecting devices, etc., can solve the problems of unfavorable air cooling and heat dissipation, small internal space, and electronic devices occupying installation space, etc., and achieve simplified EMI shielding screen structure Effect
Active Publication Date: 2020-05-12
GIGA COMPUTING TECHNOLOGY CO LTD
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Problems solved by technology
Although metal shields can effectively reduce the intensity of electronic interference, they need to occupy a certain space in the electronic device
[0004] For thin electronic devices, the internal space is small, which is not conducive to additionally setting too many components
In addition, the metal shield will also cause problems that are not conducive to air cooling and heat dissipation for the enclosed object itself.
Method used
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Embodiment Construction
[0056] Below in conjunction with accompanying drawing, structural principle and working principle of the present invention are specifically described:
[0057] see figure 1 As shown, a structure 100 for reducing electromagnetic interference proposed by the first embodiment of the present invention includes a circuit board 110 , an expansion slot 120 and an electrical conductor 130 .
[0058] like figure 1 As shown, the circuit board 110 can be, but not limited to, a motherboard of a desktop computer, a motherboard of a notebook computer, or any circuit board 110 with an expansion slot 120 . The circuit board 110 has an upper surface 112 and a ground circuit 114 . The ground circuit 114 is located on one of the copper foil circuit layers of the circuit board 110 . In addition, the circuit board 110 may also be equipped with other connection lines, connection ports, sockets, electronic chips, etc. according to the functional requirements. The aforementioned components are com...
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The invention discloses a structure for reducing electromagnetic interference and a method for reducing electromagnetic interference. The structure for reducing the electromagnetic interference includes a circuit board, an expansion slot and an electrical conductor. The circuit board has an upper surface and a ground circuit. The expansion slot is arranged on the upper surface of the circuit board and the expansion slot has at least one metal pin electrically connected to the circuit board. The electrical conductor is located above the upper surface of the circuit board and a spacing distance is maintained between the electrical conductor and the metal pin of the expansion slot to produce a capacitor. The invention further includes the method for reducing electromagnetic interference to accomplish the above-described structure.
Description
technical field [0001] The present invention relates to reducing electromagnetic interference, and more particularly to an electromagnetic interference reducing structure and a method for reducing electromagnetic interference that do not require metal shields. Background technique [0002] When the connector and the electronic components connected to it are in operation, the transmission of high-frequency electronic signals will radiate the generated common-mode noise (noise) into the space, forming electromagnetic interference. Electromagnetic interference causes other devices and components to be disturbed, and at least causes the function of the disturbed component to be reduced. Therefore, the electromagnetic compatibility regulations of various countries will regulate the intensity of electromagnetic interference. [0003] Traditionally, to reduce the intensity of electronic interference, grounded metal shields are mainly used for shielding to reduce the intensity of c...
Claims
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IPC IPC(8): H01R13/6581H01R13/46
Inventor 杨闵渊黄建翔吴信宏蔡连成
Owner GIGA COMPUTING TECHNOLOGY CO LTD