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. 21, 2019
Filed:
Jul. 10, 2018
Applicant:
Murata Manufacturing Co., Ltd., Kyoto, JP;
Inventor:
Mikiko Fukasawa, Kyoto, JP;
Assignee:
MURATA MANUFACTURING CO., LTD., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01P 1/202 (2006.01); H04B 1/18 (2006.01); H04W 72/08 (2009.01); H03F 1/32 (2006.01); H03F 3/24 (2006.01); H03H 7/01 (2006.01); H03H 7/12 (2006.01); H03F 3/195 (2006.01); H04B 1/04 (2006.01); H03F 1/56 (2006.01);
U.S. Cl.
CPC ...
H01P 1/202 (2013.01); H03F 1/32 (2013.01); H03F 1/3247 (2013.01); H03F 1/565 (2013.01); H03F 3/195 (2013.01); H03F 3/24 (2013.01); H03F 3/245 (2013.01); H03H 7/0115 (2013.01); H03H 7/12 (2013.01); H03H 7/1758 (2013.01); H03H 7/1766 (2013.01); H04B 1/0475 (2013.01); H04B 1/18 (2013.01); H04W 72/08 (2013.01); H03F 2200/294 (2013.01); H03F 2200/451 (2013.01); H03H 2210/025 (2013.01); H03H 2210/036 (2013.01);
Abstract
When a plurality of RF signals having different frequer bands are output at the same time by carrier aggregation, a switch element allows parallel connection between two capacitance elements such that a low pass filter has a first cut-off frequency that is lower than the frequency of an intermodulation distortion signal generated by the carrier aggregation. When an RF signal of a frequency band is output, the switch element releases parallel connection between the two capacitance elements such that the low pass filter has a second cut-off frequency that is higher than the first cut-off frequency.