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:
Feb. 21, 2006
Filed:
Oct. 16, 2003
Hideki Asao, Tokyo, JP;
Yukitsugu Yoshino, Tokyo, JP;
Kazuhisa Henmi, Tokyo, JP;
Hideyuki Oohashi, Tokyo, JP;
Yukihiro Tahara, Tokyo, JP;
Hideo Ogawa, Tokyo, JP;
Naofumi Yoneda, Tokyo, JP;
Muneaki Mukuda, Tokyo, JP;
Hideki Asao, Tokyo, JP;
Yukitsugu Yoshino, Tokyo, JP;
Kazuhisa Henmi, Tokyo, JP;
Hideyuki Oohashi, Tokyo, JP;
Yukihiro Tahara, Tokyo, JP;
Hideo Ogawa, Tokyo, JP;
Naofumi Yoneda, Tokyo, JP;
Muneaki Mukuda, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A nonreflective waveguide terminator includes a waveguide portion and an electromagnetic wave absorber. The portion has a rectangular opening in a plane perpendicular to a radio-wave propagation direction. The portion has one open end in the direction and the other end closed by a terminating metal internal wall. The portion has a radio-wave propagation space surrounded by first and second metal internal walls parallel to a radio-wave electric field, and third and fourth metal internal walls perpendicular to the field. The exterior shape of the absorber is a parallelepiped. The absorber has a rear-end surface positioned at a predetermined distance from the terminating wall and parallel to the terminating wall or is provided against the terminating wall. The surface of the absorber having the largest rectangular area is on the third or the fourth metal internal wall.