公开(公告)号：US20130154768A1

公开(公告)日：2013-06-20

申请号：US13688537

申请日：2012-11-29

申请人： MURATA MANUFACTURING CO., LTD.

发明人： Tetsuo TANIGUCHI

IPC分类号： H03H7/01

CPC分类号： H03H7/09 ,  H03H7/12 ,  H03H7/1708 ,  H03H7/1775 ,  H03H7/42 ,  H03H2001/0085

摘要： A laminated balanced filter includes one unbalanced terminal, two balanced terminals, a ground terminal, an unbalanced-side LC parallel resonator, an intermediate LC parallel resonator, and a balanced-side inductor. The inductor electrode pattern of the balanced-side inductor includes a first portion extending from one end portion to a connection portion and a second portion extending from the other end portion to the connection portion. A direction of a current flowing through the first portion is opposite to a direction of a current flowing through the inductor electrode pattern of the intermediate LC parallel resonator. A direction of a current flowing through the second portion of the balanced-side inductor is the same as a direction of a current flowing through the inductor electrode pattern of the intermediate LC parallel resonator. The laminated balanced filter further includes a coupling capacitor connected between a balanced terminal connected to the first portion and an unbalanced terminal.

摘要翻译： 层叠平衡滤波器包括一个不平衡端子，两个平衡端子，接地端子，不平衡侧LC并联谐振器，中间LC并联谐振器和平衡侧电感器。 平衡侧电感器的电感器电极图案包括从一个端部延伸到连接部分的第一部分和从另一个端部延伸到连接部分的第二部分。 流过第一部分的电流的方向与流过中间LC并联谐振器的电感器电极图案的电流的方向相反。 流过平衡侧电感器的第二部分的电流的方向与流过中间LC并联谐振器的电感器电极图案的电流的方向相同。 层叠平衡滤波器还包括连接在连接到第一部分的平衡端子和不平衡端子之间的耦合电容器。