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:
Sep. 23, 2003
Filed:
Dec. 29, 2000
Mitchel E. Wright, The Woodlands, TX (US);
Joseph Stoddard, Houston, TX (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
A circuit in a printed circuit board includes a trace and a ground plane coupled to the trace that includes slots in the vicinity of the trace. The slots are dimensioned and arrayed such that the trace has a controlled impedance. An array of slots progressing in a direction parallel to the trace preferably includes repeating subarrays displaced by a repeat distance in a direction parallel to the trace that is less than a characteristic wavelength of a signal propagated on the trace, coupling distributively with the trace. The slots may be polygonal, arcuate, or a combination of both in shape. The printed circuit board may include a second trace coupled to the first. Further, the printed circuit board may include a second ground plane that includes slots that couple to the trace.