公开(公告)号：US20250047244A1

公开(公告)日：2025-02-06

申请号：US18785004

申请日：2024-07-26

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Tetsurou ASHIDA ,  Kensuke TAKIMOTO

IPC: H03F1/02 ,  H03F3/24

Abstract: A power amplification device that includes a substrate having a surface; an integrated circuit including a carrier amplifier and a peak amplifier and disposed on the surface; a carrier balun connected to the carrier amplifier; a peak balun connected to the peak amplifier; and a surface mount device disposed on the surface. Each of the carrier amplifier and the peak amplifier is a pair of differential amplifiers. The substrate includes multiple insulating layers arranged in a stacking direction. An electrode to which the surface mount device is soldered is provided on the surface. In a view from the stacking direction, the carrier balun, the electrode, and the peak balun, which are arranged in a second planar direction, are disposed on one side of the integrated circuit in a first planar direction.

公开(公告)号：US20240171140A1

公开(公告)日：2024-05-23

申请号：US18420805

申请日：2024-01-24

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Kenji TAHARA ,  Kensuke TAKIMOTO ,  Kae YAMAMOTO

IPC: H03F3/24 ,  H03F1/02 ,  H04B1/04

CPC classification number: H03F3/245 ,  H03F1/0216 ,  H04B1/0475 ,  H03F2200/294 ,  H03F2200/451 ,  H03F2200/541 ,  H04B2001/0416

Abstract: A power amplifier circuit that includes a carrier amplifier, peaking amplifiers, an input coil, an output coil, an input coil, an output coil, an output terminal to which one end of the output coil is connected, and ¼-wavelength transmission lines. The carrier amplifier is connected to one end of the input coil. The peaking amplifier is connected to one end of the ¼-wavelength transmission line. The peaking amplifier is connected to one end of the input coil. The peaking amplifier is connected to one end of the ¼-wavelength transmission line. The other end of the ¼-wavelength transmission line is connected to the other end of the input coil. The other end of the ¼-wavelength transmission line is connected to the other end of the input coil. One end of the output coil is connected to the other end of the output coil.

公开(公告)号：US20230063118A1

公开(公告)日：2023-03-02

申请号：US18053431

申请日：2022-11-08

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Kensuke TAKIMOTO ,  Yoshihiro YOSHIMURA

IPC: H04B1/00

Abstract: A radio frequency module and a communication device capable of further suppressing a decrease in reception sensitivity are provided. A radio frequency module includes a switch (second switch), a reception filter (second reception filter), a low-noise amplifier (second low-noise amplifier), and a filter (second filter). The switch is configured to change over between a transmission path of a transmission signal and a reception path of a reception signal in communication based on a time division duplex system. The reception filter is provided at a subsequent stage of the switch and is configured to pass the reception signal in a predetermined frequency band. The low-noise amplifier is configured to amplify the reception signal that has passed through the reception filter. The filter is provided at a preceding stage of the switch in the reception path (second reception path).