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. 02, 2017
Filed:
Dec. 09, 2014
Applicant:
Taiyo Yuden Co., Ltd., Tokyo, JP;
Inventors:
Shogo Inoue, Tokyo, JP;
Hiroshi Nakamura, Tokyo, JP;
Assignee:
TAIYO YUDEN CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03H 9/72 (2006.01); H03H 9/70 (2006.01); H03H 9/00 (2006.01); H03H 9/02 (2006.01); H03H 9/54 (2006.01); H03H 9/58 (2006.01); H03H 9/64 (2006.01);
U.S. Cl.
CPC ...
H03H 9/725 (2013.01); H03H 9/706 (2013.01); H03H 9/0023 (2013.01); H03H 9/0071 (2013.01); H03H 9/0085 (2013.01); H03H 9/02669 (2013.01); H03H 9/542 (2013.01); H03H 9/585 (2013.01); H03H 9/644 (2013.01); H03H 9/6436 (2013.01); H03H 9/6483 (2013.01); H03H 9/6489 (2013.01);
Abstract
A duplexer includes a reception filter that is connected between a reception terminal and an antenna terminal and includes one or a plurality of series resonators that are acoustic wave resonators, and a transmission filter that is connected between a transmission terminal and the antenna terminal and includes one or a plurality of acoustic wave resonators, a resonance frequency of a first series resonator that is one of the one or the plurality of series resonators and is closest to the antenna terminal in the reception filter being higher than an upper limit frequency of a reception band of the reception filter.