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.

Date of Patent:
Aug. 09, 2022

Filed:

Mar. 10, 2021
Applicant:

Murata Manufacturing Co., Ltd., Kyoto, JP;

Inventors:

Hideki Tsukamoto, Kyoto, JP;

Hirotsugu Mori, Kyoto, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H 7/48 (2006.01); H03F 3/19 (2006.01); H03H 7/01 (2006.01); H04B 1/40 (2015.01);
U.S. Cl.
CPC ...
H03H 7/48 (2013.01); H03F 3/19 (2013.01); H03H 7/0115 (2013.01); H04B 1/40 (2013.01); H03F 2200/451 (2013.01);
Abstract

A multiplexer () includes a first filter (FLT) that passes a signal in a first frequency band, a second filter (FLT) that passes a signal in a second frequency band lower than the first frequency band, and a third filter (FLT) that passes a signal in a third frequency band. The third frequency band is a frequency band higher than the first frequency band, or a frequency band lower than the second frequency band. The first filter includes a first inductor (L) that forms a first attenuation pole on a low-frequency side of the first frequency band. The second filter includes a second inductor (L) that forms a second attenuation pole on a high-frequency side of the second frequency band. At least a portion of a component constituting the third filter is disposed between the first inductor and the second inductor.


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