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 routing traces to use a ground plane as a potential reference plane, in particular to a wiring structure that improves wiring response, thereby eliminating resonance effects and parasitics generated by circuit boards at high frequencies. Oscillate to improve the overall circuit quality of the circuit 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 perform an overall function. The use range of printed circuit boards is very wide, usually in electronic telecommunications, high frequency Circuits, communication systems, aviation, ships, home appliances, automobiles, machinery, instrumentation and other fields must be applied to the related technology of printed circuit boards, and because the technology of integrated circuits (IC) is more and more advanced, the req...

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] like figure 2 As shown, it is an example of the frequency response diagram 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 a decrease in the quality of the circuit structure. In the case of using multiple sets of power planes (Power Sets) for the printed circuit board, undesirable parasitic oscillations are also generated at 2.9GHz, resulting in both of which will cause the frequency response of the printed circuit board to appear destructive resonance at high frequencies

[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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