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:
Jul. 14, 2015
Filed:
Sep. 13, 2012
Applicant:
Mitsutoshi Imamura, Nagaokakyo, JP;
Inventor:
Mitsutoshi Imamura, Nagaokakyo, JP;
Assignee:
Murata Manufacturing Co., Ltd., Kyoto, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03H 7/01 (2006.01); H03H 7/09 (2006.01); H03H 1/00 (2006.01);
U.S. Cl.
CPC ...
H03H 7/1708 (2013.01); H03H 7/09 (2013.01); H03H 7/1766 (2013.01); H03H 7/1775 (2013.01); H03H 2001/0085 (2013.01);
Abstract
A band-pass filter that significantly reduces and prevents impedance mismatch without requiring special elements includes an input terminal, an output terminal, three LC parallel resonators arranged between the input terminal and the output terminal, and two trap resonators arranged between the three LC parallel resonators and the input terminal and the output terminal, respectively. Each of the two trap resonators is electromagnetically coupled to a respective one of the three LC parallel resonators.