US 8,076,998 B2 · Electromagnetic bandgap structure and printed circuit board

Abstract

An electromagnetic bandgap structure is disclosed. In accordance with an embodiment of the present invention, the electromagnetic bandgap structure that blocks a noise of a certain frequency band can include 4 or more conductive plates, a first stitching via, which electrically connects any two of the conductive plates with each other by having a part of the first stitching via pass through a planar surface that is different from a planar surface of the conductive plates, a second stitching via, which electrically connects another two of the conductive plates with each other by having a part of the second stitching via pass through a planar surface that is different from a planar surface of the conductive plates, and a stitching via chain, which electrically connects the first stitching via and the second stitching via with each other.

Claims17

Dependent claims

An electromagnetic bandgap structure comprising:

4 or more conductive plates;
a first stitching via, configured to electrically connect any two of the conductive plates with each other by having a part of the first stitching via pass through a planar surface that is different from a planar surface of the conductive plates;
a second stitching via, configured to electrically connect another two of the conductive plates with each other by having a part of the second stitching via pass through a planar surface that is different from a planar surface of the conductive plates;
and
a stitching via chain, electrically connecting the first stitching via and the second stitching via with each other;
wherein the electromagnetic bandgap structure is disposed in an area of a noise transferable path between a noise source point and a noise blocking destination point of the printed circuit board.

3 more elements

A printed circuit board comprising:

an electromagnetic bangap structure,
the electromagnetic bandgap structure comprising:
4 or more conductive plates;
a first stitching via, configured to electrically connect any two of the conductive plates with each other by having a part of the first stitching via pass through a planar surface that is different from a planar surface of the conductive plates;
a second stitching via, configured to electrically connect another two of the conductive plates with each other by having a part of the second stitching via pass through a planar surface that is different from a planar surface of the conductive plates;
and
a stitching via chain, electrically connecting the first stitching via and the second stitching via with each other,
wherein the electromagnetic bandgap structure is disposed in an area of a noise transferable path between a noise source point and a noise blocking destination point of the printed circuit board.

5 more elements

Dependencies are inferred from the claim text.

Electromagnetic bandgap structure and printed circuit board

Life of this patent

Electromagnetic bandgap structure and printed circuit board

Life of this patent

Abstract

Claims17