Wiring structure

Abstract

The invention discloses a wiring structure for improving wiring response, mainly eliminating bad electric coupling between inner-layer planes of a printed circuit board (PCB) to improve the wiring response. The wiring structure makes the wiring able to use a grounding plane as a reference plane and comprises: at least a wiring plane to arrange many signal wires on; and one or many power supply plane, arranged in a PCB and provided with at least an arbitrary shaped etched hole corresponding to the signal wires. And it uses the etching technique to remove the corresponding sections of the power supply planes above or below the signal wires so as to make them able to obtain relatively accurate potentials using the grounding plane as a potential reference, thus reducing the negative influence of stray capacitance between the planes. Further, because of the reduction of the stray capacitance, it can eliminate the resonance effect and parasitic vibration produced as the PCB is at high frequency, so as to improve the circuit quality of the whole PCB.

Description

technical field [0001] The present invention relates to a technology that enables wiring (Routing Trace) to use the ground plane as a potential reference plane, especially a wiring structure that improves wiring response, thereby eliminating resonance effects and parasitics generated by circuit boards at high frequencies oscillation to improve the overall circuit quality of the board. Background technique [0002] The so-called printed circuit board (print circuit board PCB) refers to a circuit system that can connect electronic components together and make them function as a whole. The use of printed circuit boards is very wide. Circuits, communication systems, aviation, ships, home appliances, automobiles, machinery, instruments and other fields must be applied to the related technologies of printed circuit boards, and because the technology of integrated circuits (ICs) is getting more and more advanced, the required conductive pins ( pins) are more and more complex, rela...

AI Technical Summary

Problems solved by technology

[0005] In other words, if the plane of each layer is regarded as the parallel plate effect in the capacitor, it can be clearly found that the smaller the distance between the planes of each layer, the more severe the oscillation of resistance and capacitance (RC), such as grounding The plane 12 and the adjacent power plane 13, etc., cause negative effects such as stray capacitance between the layers, which seriously damages the performance (Performance) and frequency response (Response) of the circuit structure of the printed circuit board.

[0006] As shown in Figure 2, it is an example of the frequency response graph produced by the currently used printed circuit board, where it can be clearly seen that the printed circuit board has a rather severe resonance effect at a frequency of 3.9 GHz, resulting in the quality of the circuit structure Therefore, in the case of using multiple sets of power planes (Power Sets) for the printed circuit board, it also produces undesirable parasitic oscillations at 2.9GHz, causing both to cause damage to the frequency response of the printed circuit board at high frequencies sexual resonance

[0007] It can be seen from the above known technical description that the current printed circuit board will have serious resonance effects and parasitic oscillations at high frequencies, which obviously has inconvenience and defects, and needs to be improved.

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