The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 21, 2011
Filed:
Jan. 25, 2008
Mi-ja Han, Suwon-si, KR;
Han Kim, Yongin-si, KR;
Dae-hyun Park, Ulsan, KR;
Jae-joon Lee, Suwon-si, KR;
Mi-Ja Han, Suwon-si, KR;
Han Kim, Yongin-si, KR;
Dae-Hyun Park, Ulsan, KR;
Jae-Joon Lee, Suwon-si, KR;
Samsung Electro-Mechantics Co., Ltd., Suwon, KR;
Abstract
An electromagnetic bandgap structure and a printed circuit board that can solve a mixed signal problem between an analog circuit and a digital circuit are disclosed. In accordance with an embodiment of the present invention, the electromagnetic bandgap structure can include a first metal layer; a first dielectric layer, stacked in the first metal layer; a metal plate, stacked in the first dielectric layer; a via, connecting the first metal layer to the metal plate; a second dielectric layer, stacked in the metal plate and the first dielectric layer; and a second metal layer, stacked in the second dielectric layer. Here, a hole can be formed on the metal plate. With the present invention, the electromagnetic bandgap structure can lower a noise level more within the same frequency band as compared with other structures having the same size.