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Compact electromagnetic band gap structure for avoiding high-speed circuit noise

A technology of electromagnetic bandgap structure and circuit noise, applied in the direction of circuits, electrical components, waveguide devices, etc., can solve the problems of high-speed circuit signal integrity influence, power supply or ground plane division, etc.

Active Publication Date: 2011-04-27
BEIHANG UNIV
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And the electromagnetic bandgap structure that has been studied seriously divides the power supply or ground plane, which will have a serious impact on the signal integrity of high-speed circuits

Method used

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  • Compact electromagnetic band gap structure for avoiding high-speed circuit noise
  • Compact electromagnetic band gap structure for avoiding high-speed circuit noise
  • Compact electromagnetic band gap structure for avoiding high-speed circuit noise

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Embodiment Construction

[0052] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0053] The present invention is a compact electromagnetic bandgap structure that solves high-speed circuit noise, and proposes a new type of compact electromagnetic bandgap structure. The structure designes the terminal of the electromagnetic bandgap structural unit as an S shape, which can make the structure coupled The tight, resulting electromagnetic bandgap suppresses high and ultra-high frequency power supply noise. The coplanar compact electromagnetic bandgap structure is formed by periodic extension of an electromagnetic bandgap structural unit on a plane.

[0054] The electromagnetic bandgap structure simulation calculation model among the present invention is made of power supply layer, medium layer and stratum, and the position connection relation between them is as image 3 : Among them, 1 means that the power layer is located on the top layer, 3 ...

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Abstract

The invention relates to a compact electromagnetic band gap structure for avoiding high-speed circuit noise, which is a coplanar compact electromagnetic band gap structure, is etched on a whole power metal plane by utilizing a laser etching process, and is a periodic structure. The shape of a periodic unit is as follows: four sides of the periodic structure are all connected with rectangular metal glue of an arc-shaped connecting bridge, and all the periodic units are connected by the arc-shaped connecting bridge at each side of each periodic unit; the response of the compact electromagnetic band gap structure is determined by three parameters, i.e. the head end of a stop band, the bandwidth of the stop band and the reachable isolation in the stop band; the compact electromagnetic band gap structure is designed in two steps: first, a dispersion map is calculated by a single table cell; and second, an S parameter is calculated. The invention improves the power supply area of a power plane, simultaneously inhibits the high-frequency and super high-frequency part of power noise of a power supply system, and has practical value and wide application prospect in the technical field of high-speed circuits.

Description

(1) Technical field [0001] The invention relates to a compact electromagnetic bandgap structure for solving high-speed circuit noise. The compact electromagnetic bandgap structure can suppress high-frequency and ultra-high-frequency power supply noise of a high-speed circuit power distribution system. The present invention belongs to the field of high-speed circuits. (2) Background technology [0002] As electronic products develop toward miniaturization and high integration, the structure of power distribution systems for electronic products also changes to support higher and higher speeds of the system. The initial power distribution system was discrete power feeders, then developed to discrete power ground traces, then to power ground filling and splitting, and finally to today's planar power bus structure for multi-layer high-speed circuits. The purpose of the high-speed circuit power distribution system is to provide the voltage and current required by the transistors ...

Claims

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Application Information

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IPC IPC(8): G06F17/50H01P1/20
Inventor 阎照文王涛姜英杰车明明韩雅静王刚
Owner BEIHANG UNIV
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