Printed circuit board based on electromagnetic energy gap structure

Abstract

The invention discloses a printed circuit board based on an electromagnetic energy gap structure, which comprises a grounding layer and a power supply layer formed by tiling a plurality of metal sheets, and is characterized in that the peripheries of the metal sheets are hollowed out to form a first hollowed-out structure; each metal sheet is internally provided with a second hollowed-out structure; and the first hollowed-out structures of the adjacent metal sheets are connected through a first metal wire to form a channel. The electromagnetic energy gap structure applied to the printed circuit board provided by the invention is additionally provided with the second hollowed-out structures in the metal sheets based on the existing linear channel coplanar electromagnetic energy gap structure, so that the propagation of noise is inhibited from a noise source (on-board power supply); the second hollowed-out structure is filled with a second metal wire, so that the inductance in the powersupply layer metal sheet is enabled to be more balanced, the noise suppression bandwidth is continuously increased, the capability of suppressing the grounding bounce noise is further enhanced on thebasis of the prior art, and the signal integrity problem of the linear channel coplanar electromagnetic energy gap structure in the prior art is optimized.

Description

technical field [0001] The invention relates to the technical field of printed circuit boards, in particular to a printed circuit board based on an electromagnetic energy gap structure. Background technique [0002] In the process of the development of high-speed and miniaturized modern technology products, especially when the chip signal transmission rate in high-performance servers is getting faster and faster, the problem that the signal is damaged by interference and causes the received signal to be distorted is becoming more and more necessary. Note that factors that affect signal integrity may include signal-to-timing issues, signal ringing, signal reflections, near-end and long-range crosstalk, switching noise, ground bounce and power bounce, attenuation, capacitive loads, electromagnetic radiation, batteries Interference, etc., and ground bounce noise (Ground Bounce Noise, GBN) between the signal input terminal and the signal output terminal is one of the main noise ...

AI Technical Summary

Problems solved by technology

[0014] The purpose of the present invention is to provide a printed circuit board based on the electromagnetic energy gap structure, which can better suppress the propagation of the ground bounce noise compared with the existing linear channel coplanar electromagnetic energy gap structure, and optimizes the existing The problem of poor signal integrity of linear channel coplanar electromagnetic bandgap structure in technology

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