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:
Jun. 08, 2004
Filed:
Jan. 08, 2003
Applicant:
Inventors:
Tomoya Maekawa, Katano, JP;
Hiroshi Kushitani, Izumisano, JP;
Hiroshi Shigemura, Kyotanabe, JP;
Toru Yamada, Katano, JP;
Toshio Ishizaki, Kobe, JP;
Hideaki Nakakubo, Kyoto, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01P 5/12 ;
U.S. Cl.
CPC ...
H01P 5/12 ;
Abstract
A dielectric filter including a plurality of resonators, and at least one transmissions line provided among said plurality of resonators. A band rejection characteristic is formed around a resonance frequency of said resonator, and a line length of said transmission line is shorter than ¼ of a wavelength corresponding to the resonance frequency of said resonator.