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Circuit board capable of reducing signal crosstalk

A signal crosstalk, circuit board technology, applied in the direction of printed circuit components, etc., can solve the problems of the system not working normally, affecting system performance, circuit false triggering, etc., to weaken and overvoltage and overcurrent, reduce signal crosstalk, and protect the circuit board effect

Inactive Publication Date: 2015-06-03
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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AI Technical Summary

Problems solved by technology

[0002] In digital circuits, the existence of crosstalk is very extensive. With the increase of signal frequency and the smaller and smaller product dimensions, the total crosstalk of digital systems also increases sharply. Excessive crosstalk will affect the performance of the system and even cause False triggering of circuits, such as overvoltage (surge voltage) or overcurrent (surge current) due to operations such as switching on and off inductive loads or starting and stopping high-power loads, line faults, etc., resulting in a transient Interference, which will cause the system not to work properly

Method used

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  • Circuit board capable of reducing signal crosstalk
  • Circuit board capable of reducing signal crosstalk

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Embodiment Construction

[0017] see figure 1 , in a preferred embodiment of the present invention, several pairs of differential pairs, a transmitter 11 connected to one end of the several differential pairs, and a receiver 12 connected to each differential pair are arranged in parallel on a circuit board 10 , a resistor 13 connected to each receiver 12, an air discharger 14, and a transient voltage suppressor 19 (TVS, Transient Voltage Suppressor). In an embodiment, the plurality of differential pairs includes four differential pairs—a first differential pair 15 , a second differential pair 16 , a third differential pair 17 and a fourth differential pair 18 . The second differential pair 16 is arranged under the first differential pair 15 , the third differential pair 17 is arranged under the second differential pair 16 , and the fourth differential pair 17 is arranged under the third differential pair 16 .

[0018] The first differential pair 15 includes a first positive differential signal line 15...

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Abstract

The invention discloses a circuit board capable of reducing signal crosstalk. At least two pairs of differential pairs are parallelly arranged on the circuit board; each differential pair comprises a positive differential signal line and a negative differential signal line; the circuit board comprises an air discharger; the air discharger comprises a grounding end, a first connection end, and a second connection end; the grounding end is grounded; the first connection end is connected with the positive differential signal line; and the second connection end is connected with the negative differential signal line.

Description

technical field [0001] The invention relates to a circuit board, in particular to a circuit board capable of reducing signal crosstalk. Background technique [0002] In digital circuits, the existence of crosstalk is very extensive. With the increase of signal frequency and the smaller and smaller product dimensions, the total crosstalk of digital systems also increases sharply. Excessive crosstalk will affect the performance of the system and even cause False triggering of circuits, such as overvoltage (surge voltage) or overcurrent (surge current) due to operations such as switching on and off inductive loads or starting and stopping high-power loads, line faults, etc., resulting in a transient Interference, this will cause the system not to work properly. Contents of the invention [0003] In view of the above, it is necessary to provide a circuit board capable of reducing signal crosstalk. [0004] A circuit board for reducing signal crosstalk, on which at least two ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K1/02
Inventor 欧光峰
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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