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:
Nov. 19, 2019
Filed:
Nov. 26, 2018
Applicant:
Murata Manufacturing Co., Ltd., Kyoto, JP;
Inventors:
Shinya Mizoguchi, Kyoto, JP;
Masanori Higashide, Kyoto, JP;
Assignee:
MURATA MANUFACTURING CO., LTD., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 1/44 (2006.01); H04B 1/525 (2015.01); H01P 1/213 (2006.01); H04B 1/10 (2006.01); H04B 1/48 (2006.01); H01P 1/205 (2006.01); H01P 5/22 (2006.01); H03H 7/46 (2006.01);
U.S. Cl.
CPC ...
H04B 1/525 (2013.01); H01P 1/2056 (2013.01); H01P 1/213 (2013.01); H01P 5/227 (2013.01); H04B 1/1036 (2013.01); H04B 1/48 (2013.01); H03H 7/463 (2013.01); H04B 2001/1063 (2013.01);
Abstract
A duplexer includes a 90° hybrid connected to an antenna terminal, a 90° hybrid connected to a terminating resistor, a transmission-side filter connected to the 90° hybrid connected to the antenna terminal, and notch filters connected to both of the 90° hybrids and mutually having the same filter characteristics, where each of the notch filters is a band elimination filter configured to reflect a radio frequency signal of a transmission band and allow a radio frequency signal of a band other than the transmission band to pass through.