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:
Dec. 26, 1989
Filed:
Sep. 19, 1988
Kanemi Sasaki, Tokyo, JP;
Kokusai Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
This invention relates to a di-electric bandpass filter using a di-electric resonator for selecting a desired wave and removing an undesired wave. The di-electric resonator has one central conductive hole (10) for resonance and more than one non-metallized coupling bores (2, 2) which are provided at the open faces of plurality of resonators (1, 1, . . . 1) which are disposed so as to contact the respective earth faces of each other. Neighboring coupling bores (2, 2) are connected by coupling metal pieces (4), whith output and input matching pins (3) inserted into either coupling bores or central holes. In this invention, it is possible to dipose the resonators freely as constructed in a bandpass filter using the space effectively so that a compact installation can be realized.