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:
Aug. 23, 2005
Filed:
Aug. 16, 2001
Douglas Elmer Wallace, Jr., Austin, TX (US);
Stephanus Saputro, Austin, TX (US);
Douglas Elmer Wallace, Jr., Austin, TX (US);
Stephanus Saputro, Austin, TX (US);
Dell Products L.P., Round Rock, TX (US);
Abstract
In electronic equipment, such as, for example, a personal computer printed circuit board, an arrangement for mitigating EMI, noise and other spurious signals at high frequencies. The arrangement includes a discrete capacitor coupled between an active pad and a reference pad. A conductor is coupled to the discrete capacitor and is configured to include a serpentine trace and a terminating tuning capacitance that are effectively series resonant at a predetermined frequency. In an exemplary embodiment, the serpentine trace comprises a number of substantially linear, mutually parallel segments that are joined by turns. The length and width of the serpentine trace, together with the number and spacing of linear segments, cooperates with the geometry of the tuning capacitance to determine the frequency of maximum attenuation of spurious signals.