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. 29, 2020
Filed:
Dec. 21, 2018
Ngk Electronics Devices, Inc., Yamaguchi, JP;
Ngk Insulators, Ltd., Aichi, JP;
Noboru Kubo, Yamaguchi, JP;
Naoki Goto, Yamaguchi, JP;
NGK ELECTRONICS DEVICES, INC., Yamaguchi, JP;
NGK INSULATORS, LTD., Aichi, JP;
Abstract
A highly reliable high-frequency ceramic board appropriately transmitting signals with high frequencies up to 50 GHz includes a flat ceramic substrate, a pair of ground lines bonded to a peripheral portion of a back surface of the ceramic substrate, a first lead pad electrode bonding the ground lines, at least one pair of signal lines between the ground lines, second lead pad electrodes attached where the signal lines are bonded, and a groove-like recess between the second lead pad electrodes. The pair of signal lines forms a differential transmission line. An interval Lbetween a first edge of the first lead pad electrode and a second edge of a corresponding second lead pad electrode and an interval Lbetween facing second edges satisfy L<2L.