公开(公告)号：US10084418B2

公开(公告)日：2018-09-25

申请号：US15641631

申请日：2017-07-05

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Shingo Yanagihara

IPC: H03F1/56 ,  H03F3/195 ,  H03F3/213 ,  H03F3/24

CPC classification number: H03F1/565 ,  H03F3/195 ,  H03F3/213 ,  H03F3/245 ,  H03F2200/222 ,  H03F2200/318 ,  H03F2200/387 ,  H03F2200/411 ,  H03F2200/451

Abstract: A power amplifier module includes a first amplifier that amplifies an input signal to generate a first amplified signal and outputs the first amplified signal, a second amplifier that amplifies the first amplified signal to generate a second amplified signal and outputs the second amplified signal, and a matching network disposed between an output terminal of the first amplifier and an input terminal of the second amplifier. The first amplifier is provided on a first chip, and the second amplifier is provided on a second chip. The matching network has an impedance transformation characteristic adjustable in accordance with a control signal.

公开(公告)号：US09887684B2

公开(公告)日：2018-02-06

申请号：US15018926

申请日：2016-02-09

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Kazutaka Mukaiyama ,  Kenji Saito ,  Takaya Wada ,  Reiji Nakajima ,  Shingo Yanagihara

IPC: H01P1/36 ,  H03H7/52 ,  H04B1/04 ,  H04B1/3827

CPC classification number: H03H7/52 ,  H01P1/36 ,  H04B1/04 ,  H04B1/3827

Abstract: An isolator includes a core isolator, a main substrate and a circuit-defining section. The main substrate includes a first wiring portion, a second wiring portion and a third wiring portion and has the core isolator and the circuit-defining section mounted thereon. An input port of the core isolator is connected to the first wiring portion. An output port of the core isolator is connected to the second wiring portion. A ground port of the core isolator is connected to the third wiring portion. In the circuit-defining section, a conductor pattern includes a capacitor that is connected in parallel with the core isolator via the first wiring portion and the second wiring portion, and an impedance element that is connected to at least either of the first wiring portion and the second wiring portion.

公开(公告)号：US09178489B2

公开(公告)日：2015-11-03

申请号：US14628564

申请日：2015-02-23

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Syunji Yoshimi ,  Kenji Saito ,  Shingo Yanagihara ,  Yuki Higashide

IPC: H01P1/36 ,  H03H7/38 ,  H01P1/387 ,  H04B1/00

CPC classification number: H03H7/38 ,  H01P1/36 ,  H01P1/387 ,  H03H2007/386 ,  H04B1/0053

Abstract: Isolators are disposed such that DC magnetic fields of permanent magnets intensity with each other, and thus, the input impedance of non-reciprocal circuits 3a and 3b (regulating means 3) is reduced. Accordingly, the impedance conversion ratio between the output impedance of amplifying means 2 and the input impedance of the regulating means 3 is reduced to be relatively small. Thus, by simplifying the configuration of matching means 4 disposed between the amplifying means 2 and the regulating means 3, the insertion loss of the matching means 4 can be reduced, thereby enhancing the efficiency of a circuit module 1. Additionally, it is possible to dispose the non-reciprocal circuits 3a and 3b close to each other so that the DC magnetic fields of the permanent magnets can intensity with each other, thereby increasing the design flexibility of the circuit module 1 and accordingly reducing the size of the circuit module 1.

Abstract translation: 隔离器被布置成使得永磁体的DC磁场彼此强度，因此减小了不可逆电路3a和3b（调节装置3）的输入阻抗。 因此，放大装置2的输出阻抗与调节装置3的输入阻抗之间的阻抗转换比减小到相对较小。 因此，通过简化布置在放大装置2和调节装置3之间的匹配装置4的配置，可以减小匹配装置4的插入损耗，从而提高电路模块1的效率。另外， 将不可逆电路3a和3b彼此靠近，使得永磁体的DC磁场彼此强度相关，从而增加了电路模块1的设计灵活性，从而减小了电路模块1的尺寸。