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:
Jul. 15, 2014
Filed:
Oct. 01, 2009
Hideki Kirino, Tokyo, JP;
Isao Yamamoto, Ehime, JP;
Masashi Watanabe, Ehime, JP;
Panasonic Corporation, Osaka, JP;
Abstract
This high-frequency waveguide is formed by first and second conductors disposed opposite each other at a spacing of λ/2, where λis the free space wavelength of the operating frequency of a high-frequency signal. A ridge is provided at the waveguide formation portion between these first and second conductors, which protrudes from one of the first and second conductors toward the other and is formed extending along the waveguide formation portion. A plurality of columnar protrusions with a height of λ/4 are disposed at a spacing of less than λ/2 to at least one of the first and second conductors on the outside of the waveguide formation portion and to the outside of the ridge.