公开(公告)号：US11855594B2

公开(公告)日：2023-12-26

申请号：US17153299

申请日：2021-01-20

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Hiroshi Kojima ,  Reiji Nakajima ,  Hirotsugu Mori

IPC: H03F3/24 ,  H03F3/21 ,  H03F3/19 ,  H04W52/00

CPC classification number: H03F3/245 ,  H03F3/19 ,  H03F3/211 ,  H04W52/00 ,  H03F2200/451

Abstract: A radio frequency circuit includes: an amplifier circuit configured to amplify a first radio frequency signal using a first power supply voltage, and amplify a second radio frequency signal using a second power supply voltage. The first radio frequency signal is a signal in a first band for Long Term Evolution (LTE), the second radio frequency signal is a signal in a second band for 5th Generation New Radio (5G NR) or a wireless local area network (WLAN) signal, and in a state in which a first predetermined condition regarding the first radio frequency signal and the second radio frequency signal is satisfied, a value of the second power supply voltage is greater than a value of the first power supply voltage.

公开(公告)号：US11362406B2

公开(公告)日：2022-06-14

申请号：US17110386

申请日：2020-12-03

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Manabu Nakahori ,  Hiroshi Kojima ,  Masayuki Kikuda

IPC: H01P3/16 ,  H01P1/20 ,  H01P7/10

Abstract: A dielectric waveguide filter includes at least four dielectric waveguide resonators arranged along a main coupling path for signal propagation, and main coupling portions each of which is provided between the dielectric waveguide resonators that are adjacent to each other along the main coupling path among the at least four dielectric waveguide resonators. The main coupling portions include an inductive coupling portion and a capacitive coupling portion, and the inductive coupling portion and the capacitive coupling portion are alternately and repeatedly arranged along the main coupling path.