公开(公告)号：US20150180112A1

公开(公告)日：2015-06-25

申请号：US14638803

申请日：2015-03-04

Applicant: TDK Corporation

Inventor： Hajime KUWAJIMA ,  Toshiyasu FUJIWARA ,  Naoto OHYAMA ,  Yoshikazu TSUYA ,  Masami SASAKI

IPC: H01P5/18 ,  H04B1/04 ,  H04B1/00 ,  H03H7/01

CPC classification number: H01P5/18 ,  H03H7/0138 ,  H04B1/0053 ,  H04B1/0458

Abstract: A directional coupler according to the present invention includes a primary line for transmitting a transmission signal; an input port for inputting the transmission signal to the primary line; an output port for outputting the transmission signal from the primary line; a secondary line for electromagnetically coupling with the primary line to extract part of the transmission signal; a coupling port provided at one end of the secondary line; an isolation port provided at the other end of the secondary line; and a low pass filter unit having a function of low pass filter, disposed between the secondary line and the coupling port.

Abstract translation: 根据本发明的定向耦合器包括用于发送发送信号的主线路; 用于将传输信号输入到主线路的输入端口; 输出端口，用于从主线路输出发送信号; 用于与主线电磁耦合以提取部分传输信号的次级线路; 耦合端口，设置在所述次级线路的一端; 设置在次级线路的另一端的隔离端口; 以及具有低通滤波器功能的低通滤波器单元，设置在二次线路和耦合端口之间。