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:
Dec. 27, 2011
Filed:
Oct. 25, 2007
Moises Cases, Austin, TX (US);
Bradley D. Herrman, Cary, NC (US);
Kent B. Howieson, Austin, TX (US);
Erdem Matoglu, Austin, TX (US);
Bhyrav M. Mutnury, Austin, TX (US);
Pravin S. Patel, Cary, NC (US);
Nam H. Pham, Round Rock, TX (US);
Caleb J. Wesley, Winston Salem, NC (US);
Moises Cases, Austin, TX (US);
Bradley D. Herrman, Cary, NC (US);
Kent B. Howieson, Austin, TX (US);
Erdem Matoglu, Austin, TX (US);
Bhyrav M. Mutnury, Austin, TX (US);
Pravin S. Patel, Cary, NC (US);
Nam H. Pham, Round Rock, TX (US);
Caleb J. Wesley, Winston Salem, NC (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
An apparatus having reduced noise coupling includes a core layer having an upper and lower surface, the upper and lower surface each including a copper sheet layer, a pre-preg layer having an upper surface and a lower surface, the upper surface of the pre-preg layer coupled to the lower surface of the core layer, a core insulating layer having an upper surface and a lower surface, the upper surface of the core insulating layer coupled to the lower surface of the pre-preg layer, a return current reference layer disposed on the lower surface of the core insulator layer and high-speed signal traces disposed on the upper surface of the core insulating layer, each of the high speed signal traces disposed on a pedestal defined by a section of the pre-preg layer and the core insulating layer, each pedestal being separated by an air gap disposed between adjacent pedestals.