公开(公告)号：US11811371B2

公开(公告)日：2023-11-07

申请号：US16908835

申请日：2020-06-23

Applicant: MURATA MANUFACTURING CO., LTD.

Inventor： Shinya Hitomi ,  Hidenori Obiya ,  Hirotsugu Mori

IPC: H03F1/02 ,  H03F3/21 ,  H03F3/19 ,  H03F3/24

CPC classification number: H03F3/245 ,  H03F1/0233 ,  H03F3/19 ,  H03F3/211 ,  H03F2200/451

Abstract: A radio-frequency circuit includes a power amplifying circuit configured to amplify a first radio-frequency signal having a first channel bandwidth and a second radio-frequency signal having a second channel bandwidth greater than the first channel bandwidth. The power amplifying circuit is configured to amplify the first radio-frequency signal in an amplifying mode according to an average power tracking method, and to amplify the second radio-frequency signal in an amplifying mode according to an envelope tracking method.

公开(公告)号：US11290966B2

公开(公告)日：2022-03-29

申请号：US16897967

申请日：2020-06-10

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Shinya Hitomi ,  Hidenori Obiya ,  Hirotsugu Mori

IPC: H04W52/34 ,  H04W52/36 ,  H04B7/06

Abstract: A communication circuit includes a first transfer circuit that includes a first transmitter circuit, and a second transfer circuit that includes a second transmitter circuit that can transmit a signal simultaneously with the first transmitter circuit. When a difference between requested power and scheduled power is greater than a predetermined value, the second transmitter circuit is configured to change transmission power of the second transmitter circuit to adjust the difference to a value smaller than the predetermined value, the requested power being requested transmission power, the scheduled power being transmission power to be transmitted based on the requested power.

公开(公告)号：US10971459B2

公开(公告)日：2021-04-06

申请号：US15905104

申请日：2018-02-26

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Shinya Hitomi ,  Hidenori Obiya ,  Reiji Nakajima

IPC: H01L23/66 ,  H04B1/38 ,  H04B1/04 ,  H04B1/18 ,  H03F3/24 ,  H01L23/055 ,  H01L23/16 ,  H01L23/04 ,  H01L23/10 ,  H01L23/538 ,  H01L23/552 ,  H01L25/16 ,  H03F3/195 ,  H03F3/21 ,  H03F3/213 ,  H03H9/05 ,  H01L23/00 ,  H03H7/38

Abstract: A high-frequency module (1) includes a first substrate (101), a second substrate (102) that faces the first substrate (101), a support (103) that supports the first substrate (101) and the second substrate (102), and a plurality of high-frequency circuit components arranged in internal space formed by the first substrate (101), the second substrate (102), and the support and on both of facing principal faces of the first substrate (101) and the second substrate (102), and the plurality of high-frequency circuit components include a power amplifier element that constitutes a power amplifier circuit (16).

公开(公告)号：US09985673B2

公开(公告)日：2018-05-29

申请号：US15278362

申请日：2016-09-28

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Shinya Hitomi ,  Hidenori Obiya ,  Shinya Mizoguchi

IPC: H04B1/18 ,  H04B1/04 ,  H04B1/40 ,  H04L5/14

CPC classification number: H04B1/18 ,  H04B1/0458 ,  H04B1/40 ,  H04L5/1461

Abstract: An amplitude phase parameter calculator in a control unit or circuit in a transmission-reception apparatus calculates an amplitude difference voltage and a phase difference voltage between a transmission detection signal and a reflected detection signal. Adjustment factors including a combination of an amplitude control voltage and a phase control voltage corresponding to a combination of the amplitude difference voltage and the phase difference voltage are discretely stored in an adjustment factor determination table in the control unit. An adjustment factor determiner in the control unit determines the adjustment factors using the combination of the amplitude difference voltage and the phase difference voltage and the adjustment factor determination table. If the adjustment factors do not exist in the adjustment factor determination table, the adjustment factor determiner calculates target adjustment factors using the relationship among the adjustment factors stored in the table, the amplitude difference voltage, and the phase difference voltage.

公开(公告)号：US20160112009A1

公开(公告)日：2016-04-21

申请号：US14977814

申请日：2015-12-22

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Shinya Hitomi ,  Hidenori Obiya ,  Tsuyoshi Sato ,  Shingo Yanagihara

IPC: H03F1/02 ,  H03F1/56 ,  H03F3/21 ,  H04B1/04

CPC classification number: H03F1/0205 ,  H03F1/565 ,  H03F3/19 ,  H03F3/211 ,  H03F3/245 ,  H03F2200/111 ,  H03F2200/318 ,  H03F2200/411 ,  H03F2203/21139 ,  H03H7/38 ,  H04B1/04 ,  H04B1/525 ,  H04B2001/0416

Abstract: A PA module (10) includes multiple amplifying elements (11a, 11b) and a variable filter circuit (12). The amplifying elements (11a, 11b) amplify a transmission signal in a frequency range including multiple communication bands and are cascade-connected to each other. The variable filter circuit (12) is connected between the amplifying elements (11a, 11b). The variable filter circuit (12) uses a transmission band corresponding to a used communication band selected from the multiple communication bands as a pass band and a reception band corresponding to the used communication band as an attenuation band.

Abstract translation: PA模块（10）包括多个放大元件（11a，11b）和可变滤波器电路（12）。 放大元件（11a，11b）在包括多个通信频带的频率范围内放大发送信号，并且彼此级联。 可变滤波器电路（12）连接在放大元件（11a，11b）之间。 可变滤波器电路（12）使用与从多个通信频带中选择的使用的通信频带相对应的传输频带作为通带和与所使用的通信频带对应的接收频带作为衰减频带。

公开(公告)号：US20150222320A1

公开(公告)日：2015-08-06

申请号：US14688448

申请日：2015-04-16

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Hidenori Obiya ,  Shinya Mizoguchi ,  Shinya Hitomi

IPC: H04B1/48

CPC classification number: H04B1/48 ,  H04B1/525

Abstract: A transmission filter allows a signal in the frequency band of a transmission signal to pass through the transmission filter and blocks signals in other frequency bands. The transmission signal output from the transmission filter is supplied to an antenna via an antenna sharing device and transmitted to the outside. A reflected-signal detector senses the amplitude and the phase of a reflected signal from the antenna and outputs detection signals (DA and DP). A control circuit adjusts control signals (CA and CP) on the basis of the detection signals (DA and DP). A cancellation-signal-output circuit adjusts a cancellation signal in such a manner that the cancellation signal has a phase opposite to that of the reflected signal and an amplitude the same as that of the reflected signal by using the control signals (CA and CP). A multiplexer combines the cancellation signal with a received signal including a noise signal.

Abstract translation: 发送滤波器允许发送信号的频带中的信号通过发送滤波器并阻止其它频带中的信号。 从发送滤波器输出的发送信号通过天线共享装置提供给天线，并发送到外部。 反射信号检测器检测来自天线的反射信号的振幅和相位，并输出检测信号（DA和DP）。 控制电路基于检测信号（DA和DP）来调节控制信号（CA和CP）。 取消信号输出电路以这样的方式调整抵消信号，使得消除信号具有与反射信号相反的相位，并且通过使用控制信号（CA和CP）与反射信号的幅度相同的幅度， 。 复用器将消除信号与包括噪声信号的接收信号组合。