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:
May. 19, 2009
Filed:
Dec. 13, 2006
Yun-kwon Park, Dongducheon-si, KR;
In-sang Song, Seoul, KR;
Seok-chul Yun, Yongin-si, KR;
Kuang-woo Nam, Yongin-si, KR;
Yun-kwon Park, Dongducheon-si, KR;
In-sang Song, Seoul, KR;
Seok-chul Yun, Yongin-si, KR;
Kuang-woo Nam, Yongin-si, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
A band pass filter for improving filtering, realizing high integration, and reducing manufacturing costs, and a duplexer having the band pass filter. The band pass filter comprises a first resonant circuit in which n first resonators are connected in series, where n is a natural number greater than 1; a second resonator circuit which faces the first resonant circuit and has m second resonators connected in series, where m is a natural number greater than 1; and a third resonant circuit in which k third resonators are connected in parallel on branching lines linking the first and second resonant circuits, where k is a natural number greater than 1. By arranging the resonators of the respective resonant circuits in the bridge structure, the filtering characteristics can be improved, the number of inductors used to adjust the resonant frequency characteristics of the resonators can be reduced, high integration can be realized and manufacture cost can be reduced.