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. 06, 1995
Filed:
Apr. 01, 1994
Anthony B Suppelsa, Coral Springs, FL (US);
Anthony J Suppelsa, Coral Springs, FL (US);
Fadia Nounou, Plantation, FL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A method of manufacturing a circuit carrying substrate having one or more coaxial via holes. The center core or inner layer (330) of the circuit carrying substrate is a dielectric material that has a plated (339) through hole or via (335) coupling the two surfaces of the inner layer together. One side of the inner layer has a first metallization pattern (336) and the other side has a second metallization pattern (338) on it. The through hole is electrically conductive (339) and connects portions of the first and second metallization patterns. The plated through hole is filled with a dielectric material (340). A first dielectric layer (342) is formed on one side of the inner layer, and a second dielectric layer (344) is formed on the other side of the inner layer, so that the dielectric layers cover the first and second metallization patterns and the filled via hole. A third metallization pattern (350) is formed on the first dielectric layer, and a fourth metallization pattern (360) is formed on the second dielectric layer. A second via hole (370) is formed within the first via hole, substantially concentric to and electrically insulated from the first via hole, to electrically connect the third and fourth metallization patterns.