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:
Aug. 13, 2024
Filed:
Mar. 06, 2019
Applicant:
Nec Network and Sensor Systems, Ltd., Tokyo, JP;
Inventor:
Takashi Nakano, Tokyo, JP;
Assignee:
NEC Network and Sensor Systems, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 23/16 (2006.01); H01J 23/24 (2006.01); H01J 25/34 (2006.01);
U.S. Cl.
CPC ...
H01J 23/24 (2013.01); H01J 23/165 (2013.01); H01J 25/34 (2013.01);
Abstract
A slow-wave circuit comprises: a waveguide comprising a meander-shaped part that transmits an electromagnetic wave and alternately repeats a first folded part and a second folded part folded onto the opposite side to the first folded part; and a beam hole that transmits an electron beam, extends in a predetermined direction, and penetrates the meander-shaped part, wherein the beam hole penetrates the meander-shaped part so that a part of the beam hole protrudes from the first folded part.