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:
Oct. 29, 2013
Filed:
Oct. 13, 2011
Bhyrav M. Mutnury, Austin, TX (US);
Moises Cases, Austin, TX (US);
Tae Hong Kim, Round Rock, TX (US);
Nanju NA, Austin, TX (US);
Bhyrav M. Mutnury, Austin, TX (US);
Moises Cases, Austin, TX (US);
Tae Hong Kim, Round Rock, TX (US);
Nanju Na, Austin, TX (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Plating stub resonance in a circuit board may be mitigated by increasing surface roughness of the plating stub conductor. Roughening the plating stub increases its resistance due to the skin effect at higher frequencies, which decreases the quality factor of the transmission line and consequently increases the damping factor, to reduce any resonance that would occur in the plating stub as formed prior to roughening. The surface roughness can be increased in a variety of ways, including chemical processes, by selectively applying a laser beam, or by applying an etch-resistance material in selected locations.