公开(公告)号：US20140368293A1

公开(公告)日：2014-12-18

申请号：US14471121

申请日：2014-08-28

Applicant: MURATA MANUFACTURING CO. LTD.

Inventor： Kazutaka MUKAIYAMA

IPC: H01P5/18 ,  H03H7/38

CPC classification number: H01P5/184 ,  H01P5/185 ,  H03H7/383 ,  H03H7/48

Abstract: To achieve favorable directivity in a directional coupler, even with a low magnetic-field coupling coefficient, the directional coupler includes a main line, a secondary line, and impedance conversion sections. The main line is connected between a signal input port and a signal output port. The secondary line is coupled to the main line through coupling capacitance and mutual inductance. The impedance conversion sections are connected between the secondary line and a coupling port or an isolation port, and the impedance viewed from the secondary line differs from the impedance viewed from a port side while both impedances viewed from the secondary line are equal.

Abstract translation: 为了在定向耦合器中实现有利的方向性，即使具有低的磁场耦合系数，定向耦合器包括主线，二次线和阻抗转换部分。 主线连接在信号输入端口和信号输出端口之间。 次级线通过耦合电容和互感耦合到主线。 阻抗转换部分连接在次级线路和耦合端口或隔离端口之间，并且从次级线路看到的阻抗与从端口侧观察到的阻抗不同，而从次级线路看到的两个阻抗相等。

公开(公告)号：US20130241668A1

公开(公告)日：2013-09-19

申请号：US13891075

申请日：2013-05-09

Applicant: MURATA MANUFACTURING CO., LTD.

Inventor： Daisuke TOKUDA ,  Kazutaka MUKAIYAMA

IPC: H01P5/18

CPC classification number: H01P5/184 ,  H01P5/185

Abstract: In a directional coupler, even when parasitic inductance exists, an increase in device size can be suppressed while obtaining good isolation characteristics. A transmission line type directional coupler includes a main line and a sub line that is coupled to the main line through electric field coupling and magnetic field coupling. The main line includes a signal input port and a signal output port, and the sub line includes a coupling port and an isolation port. A series capacitor is connected to only one of the signal output port and the coupling port.

Abstract translation: 在定向耦合器中，即使存在寄生电感，也可以在获得良好的隔离特性的同时抑制器件尺寸的增加。 传输线型定向耦合器包括通过电场耦合和磁场耦合耦合到主线的主线和子线。 主线包括信号输入端口和信号输出端口，子线路包括耦合端口和隔离端口。 串联电容器仅连接到信号输出端口和耦合端口中的一个。

公开(公告)号：US20160173056A1

公开(公告)日：2016-06-16

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: H03H7/52 ,  H04B1/3827 ,  H04B1/04

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.

Abstract translation: 隔离器包括芯隔离器，主基板和电路限定部分。 主基板包括第一布线部分，第二布线部分和第三布线部分，并且其上安装有芯隔离器和电路限定部分。 芯隔离器的输入端口连接到第一布线部分。 芯隔离器的输出端口连接到第二布线部分。 芯隔离器的接地端口连接到第三布线部分。 在电路定义部分中，导体图案包括经由第一布线部分和第二布线部分与芯隔离器并联连接的电容器，以及阻抗元件，其连接到第一布线部分和第二布线部分中的至少一个， 第二配线部。