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:
Nov. 18, 2025
Filed:
Apr. 19, 2021
Yamaichi Electronics Co., Ltd., Tokyo, JP;
Hiroshi Takahira, Tokyo, JP;
Akira Yonezawa, Tokyo, JP;
YAMAICHI ELECTRONICS CO., LTD., Tokyo, JP;
Abstract
High-frequency signal transmission cable includes: a dielectric layer; and first and second wiring layers arranged to sandwich the dielectric layer. The first wiring layer includes at least M (M indicating a natural number of 2 or more) differential transmission lines. The first wiring layer further includes a group of first ground lines including at least 2×M first ground lines. The second wiring layer includes a group of second ground lines including at least M second ground lines. The group of first ground lines are allocated to the M differential transmission lines in accordance with a condition of at least two first ground lines per one differential transmission line in non-overlap manner, and the group of second ground lines are allocated to the M differential transmission lines in accordance with a condition of at least one second ground line per one differential transmission line in non-overlap manner. Each of the differential transmission lines is interposed between the at least two first ground lines and is opposed to the at least one second ground line.