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. 16, 2019
Filed:
Jul. 24, 2018
Murata Manufacturing Co., Ltd., Kyoto, JP;
Masakazu Hirobe, Kyoto, JP;
MURATA MANUFACTURING CO., LTD., Kyoto, JP;
Abstract
A high-frequency front end circuit performs reception/transmission simultaneously, and includes a transmitter circuit and a receiver circuit. The transmitter circuit includes a transmit filter passing a signal in the transmit frequency band. The receiver circuit includes a receive filter, an LNA, and a filter circuit. The receive filter passes a signal in the receive frequency band different from the transmit frequency band. The LNA receives and amplifies a signal that has been output from the receive filter. The filter circuit is connected between the receive filter and the LNA. The filter circuit attenuates a component, which is included in the signal received by the LNA, of the frequency indicating the difference between the center frequency of the transmit frequency band and the center frequency of the receive frequency band.