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:
Apr. 14, 2009
Filed:
Jan. 03, 2007
Yun-kwon Park, Yongin-si, KR;
Sang-chul Sul, Yongin-si, KR;
In-sang Song, Yongin-si, KR;
Chul-soo Kim, Yongin-si, KR;
Seok-chul Yun, Yongin-si, KR;
Kuang-woo Nam, Yongin-si, KR;
Yun-kwon Park, Yongin-si, KR;
Sang-chul Sul, Yongin-si, KR;
In-sang Song, Yongin-si, KR;
Chul-soo Kim, Yongin-si, KR;
Seok-chul Yun, Yongin-si, KR;
Kuang-woo Nam, Yongin-si, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
A duplexer is provided. The duplexer includes a first band pass filter (BPF) coupled to a first signal port and a second signal port; and a second BPF coupled to the first signal port and a third signal port, each of the first BPF and the second BPF including a first resonance circuit which comprises a plurality of first resonators coupled in series; a second resonance circuit which comprises a plurality of second resonators coupled in series; and a third resonance circuit which comprises a plurality of third resonators coupled in parallel and formed in divided lines coupling the first and second resonance circuits.