Inventor
NAKAJIMA REIJI
JP26 patents
Patents
26 patentsUS10389310B2Aug 20, 2019
Radio-frequency signal amplifier circuit, power amplifier module, front-end circuit, and communication device
MURATA MANUFACTURING CO7 citations83
US9780735B1Oct 3, 2017
High-frequency signal amplifier circuit, power amplifier module, front-end circuit, and communication apparatus
MURATA MANUFACTURING CO18 citations83
US11855594B2Dec 26, 2023
Radio frequency circuit and communication device
MURATA MANUFACTURING CO2 citations73
US11451249B2Sep 20, 2022
Radio-frequency module and communication device
MURATA MANUFACTURING CO4 citations72
US11349510B2May 31, 2022
Radio frequency front end module and communication device
MURATA MANUFACTURING CO2 citations72
US10505505B2Dec 10, 2019
Power amplification module, front-end circuit, and communication device
MURATA MANUFACTURING CO2 citations72
US10340971B2Jul 2, 2019
Power amplification module, front-end circuit, and communication device
MURATA MANUFACTURING CO6 citations72
US10164585B2Dec 25, 2018
Radio frequency filter, radio frequency front-end circuit, communication device, and design method for radio frequency filter
MURATA MANUFACTURING CO2 citations72
US10056936B2Aug 21, 2018
Front end circuit and communication apparatus
MURATA MANUFACTURING CO2 citations69
US12431933B2Sep 30, 2025
Radio-frequency module and communication device
MURATA MANUFACTURING CO0 citations62
US11716103B2Aug 1, 2023
Radio-frequency module and communication device
MURATA MANUFACTURING CO0 citations62
US11290134B2Mar 29, 2022
Radio frequency module
MURATA MANUFACTURING CO1 citations62
US12388484B2Aug 12, 2025
Radio frequency module and communication device
MURATA MANUFACTURING CO1 citations60
US12199601B2Jan 14, 2025
Switch circuit and radio-frequency circuit
MURATA MANUFACTURING CO0 citations52
US12592724B2Mar 31, 2026
Radio frequency circuit and communication device
MURATA MANUFACTURING CO0 citations51
US12395197B2Aug 19, 2025
Radio frequency circuit and communication device
MURATA MANUFACTURING CO0 citations51
US11418224B2Aug 16, 2022
Radio frequency module and communication device
MURATA MANUFACTURING CO0 citations51
US10971459B2Apr 6, 2021
High-frequency module
MURATA MANUFACTURING CO0 citations51
US10218317B2Feb 26, 2019
High-frequency amplifier module
MURATA MANUFACTURING CO0 citations51
US10833023B2Nov 10, 2020
Circuit module
MURATA MANUFACTURING CO0 citations41
US10230338B2Mar 12, 2019
High-frequency amplifier module
MURATA MANUFACTURING CO0 citations41
US9887684B2Feb 6, 2018
Isolator
MURATA MANUFACTURING CO0 citations41
US9705172B2Jul 11, 2017
Non-reciprocal circuit element
MURATA MANUFACTURING CO0 citations41
US9620838B2Apr 11, 2017
Non-reciprocal circuit device
MURATA MANUFACTURING CO0 citations41
US9583808B2Feb 28, 2017
Nonreversible circuit device
MURATA MANUFACTURING CO0 citations41
US7679470B2Mar 16, 2010
Nonreciprocal circuit device
MURATA MANUFACTURING CO0 citations41