Construction method of compact electromagnetic band gap (EBG) structure for eliminating high speed circuit noise

An electromagnetic bandgap structure, circuit noise technology, applied in the direction of electrical components, magnetic/electric field shielding, etc., can solve the problems of high-speed circuit signal integrity impact, power supply or ground plane segmentation, etc.

Active Publication Date: 2011-03-02
BEIHANG UNIV
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Problems solved by technology

And the electromagnetic bandgap structure that has been studied seriously divides the power su...

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  • Construction method of compact electromagnetic band gap (EBG) structure for eliminating high speed circuit noise
  • Construction method of compact electromagnetic band gap (EBG) structure for eliminating high speed circuit noise
  • Construction method of compact electromagnetic band gap (EBG) structure for eliminating high speed circuit noise

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Embodiment Construction

[0051] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0052] The invention provides a method for constructing a compact electromagnetic bandgap structure that solves high-speed circuit noise, and proposes a novel compact electromagnetic bandgap structure, which designs the terminal of the electromagnetic bandgap structure unit as an S shape, which can The structure is tightly coupled, and the generated electromagnetic bandgap can suppress high-frequency and ultra-high-frequency power supply noise. The coplanar compact electromagnetic bandgap structure includes a complete ground plane, a dielectric layer, a plane layer of the electromagnetic bandgap structure and two discrete ports. Wherein the ground plane, the bottom plane of the dielectric layer, and the plane of the electromagnetic bandgap structure have the same area.

[0053] The power distribution system in the present invention is composed of a power sup...

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Abstract

The invention relates to a construction method of a compact electromagnetic band gap (EBG) structure for eliminating high speed circuit noise. Based on a coplanar compact EBG structure, the method has 5 steps: 1. establishing a power supply system of a printed circuit board in electromagnetic simulation software CST according to the general design norms of printed circuit boards; 2. editing a power source plane of a power supply distribution system into a novel plane compact EBG structure by a model builder of the CST software; 3. intercepting a unit of the compact EBG structure in the CST software for carrying out dispersion graph analysis and adjusting the structure of the unit; 4. adding a dispersion port, calculating the transmission S parameter of the power supply system and optimizing the structural dimension in the CST software to obtain required gap indexes; and 5. adopting a two-sided copper-clad plate to manufacture the EBG structure according to the determined optimal dimension in step 4. The method provided by the invention improves planar power supply area of the power source and inhibits the high frequency part and the ultrahigh frequency part of the noise of the power supply system.

Description

(1) Technical field [0001] The invention relates to a construction method of a compact electromagnetic bandgap structure to solve high-speed circuit noise. The method is based on a novel compact electromagnetic bandgap structure, which can suppress the high-speed circuit power distribution system High frequency and ultra high frequency power supply noise. The invention belongs to the field of high-speed circuits. (2) Background technology [0002] With the development of electronic products towards miniaturization and high integration, the structure of the power distribution system of electronic products also changes to support the higher and higher speed of the system. The initial power distribution system is a discrete power feeder, and then develops into a discrete power ground routing, then fills and splits the power ground, and finally develops into the planar power bus structure of today's multi-layer high-speed circuits. The purpose of the high-speed circuit power d...

Claims

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Application Information

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IPC IPC(8): H05K9/00
Inventor 阎照文王涛姜英杰韩雅静车明明王刚
Owner BEIHANG UNIV
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