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. 25, 2008
Filed:
Jan. 21, 2003
Motoharu Hiroshima, Ishikawa-ken, JP;
Katsuhito Kuroda, Matto, JP;
Shohachi Nishijima, Komatsu, JP;
Hideyuki Kato, Ishikawa-ken, JP;
Haruo Matsumoto, Kanazawa, JP;
Motoharu Hiroshima, Ishikawa-ken, JP;
Katsuhito Kuroda, Matto, JP;
Shohachi Nishijima, Komatsu, JP;
Hideyuki Kato, Ishikawa-ken, JP;
Haruo Matsumoto, Kanazawa, JP;
Abstract
A λ/2 resonator comprises an inner conductor formed hole having an inner conductor with both open-ends, formed therein, and λ/4 resonators comprise inner conductor formed holes having inner conductors with one short-circuited ends and the other open ends, respectively. The resonators are coupled, whereby a terminal electrode connected to the vicinity of the one open end of one of the λ/4 resonators functions as an unbalanced terminal, and terminal electrodes connected to both open ends of the λ/2 resonator function as balanced terminals.