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Circuit board for reducing electromagnetic interference of electronic product

A technology for electromagnetic interference and electronic products, applied in the direction of printed circuits, electrical components, magnetic/electric field shielding connected to non-printed electrical components, etc., can solve problems such as poor performance, waste of cost and time, etc.

Inactive Publication Date: 2007-07-25
MITAC COMP (SHUN DE) LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially in the configuration of the ground wire, if the circuit layout of the ground wire is not good, resulting in excessive electromagnetic interference, the printed circuit board needs to be re-circuit layout, which will waste cost and time

Method used

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  • Circuit board for reducing electromagnetic interference of electronic product
  • Circuit board for reducing electromagnetic interference of electronic product

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Experimental program
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Embodiment Construction

[0017] Please refer to FIG. 2 , which is a circuit block diagram of removing the original ground wire layout and replacing the original transmission wire ground wire layout with metal sheets and screws.

[0018] The printed circuit board 11 includes: a power supply 21 , a load impedance 31 , a metal sheet 41 , a via 711 , a via 712 , a via 713 and a via 714 . The metal sheet 41 has a hole 511 , a hole 512 , a hole 513 and a hole 514 outside the four corners of the metal sheet 41 , and a hole 52 is located on the metal sheet 41 .

[0019] The power supply 21 is a signal source of an AC signal, providing signal sources required by general electronic components. The signal is a voltage or current signal with frequency. The positive pole of the power supply 21 is connected to the load impedance 31 in series through the wiring (trace) on the printed circuit board 11 , while the negative pole of the power supply 21 does not use the wiring method of the printed circuit, but uses a s...

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PUM

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Abstract

The invention is used for reducing the radiation emission of circuit board caused by the signals passing through the parasitic inductance. It removes the layout of ground trace from the circuit layout, and uses metal plate and metal screw instead of the ground race. Due to removing of twist ground trace, the radiation emission is reduced.

Description

technical field [0001] The invention relates to a circuit board capable of reducing electromagnetic interference of electronic products. Background technique [0002] With the rapid development of communication and computer technology, the design of high-speed printed circuit board (PCB) has entered the field of Gigabit, and the application of new high-speed components makes it possible to transmit such a high rate on the circuit board for a long distance. At the same time, the problems of signal integrity (SI), power integrity and electromagnetic compatibility (electro-magnetic compatibility, EMC for short) in the design of printed circuit boards are also more prominent. Printed circuit boards are found in almost every electronic device. The electronic components in the equipment are mounted on printed circuit boards of various sizes according to the circuit layout. In addition to fixing various small parts, the main function of the printed circuit board is to provide mut...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K1/18H05K9/00
Inventor 张哲甫
Owner MITAC COMP (SHUN DE) LTD
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