公开(公告)号：US20080024246A1

公开(公告)日：2008-01-31

申请号：US11878747

申请日：2007-07-26

申请人： Yasufumi Kaneda ,  Osamu Kawachi ,  Seiichi Mitobe ,  Kouta Ookubo

发明人： Yasufumi Kaneda ,  Osamu Kawachi ,  Seiichi Mitobe ,  Kouta Ookubo

IPC分类号： H03H9/00

CPC分类号： H03H9/6476 ,  H03H9/14582

摘要： A filter includes a first filter that is connected between an input node and an output node and is a surface acoustic wave filter, and a second filter that is provided between the input node and the output node and is connected in parallel with the first filter. The first filter has a total number N1 of pairs of electrode fingers of interdigital transducers and the second filter having a total number N2 of pairs of electrode fingers of interdigital transducers, in which N1 is greater than N2.

摘要翻译： 滤波器包括连接在输入节点和输出节点之间并且是表面声波滤波器的第一滤波器，以及设置在输入节点和输出节点之间并与第一滤波器并联连接的第二滤波器。 第一滤波器具有交叉指型换能器的电极指数对N1的总数，并且第二滤波器具有跨数字换能器的电极指对的总数N2，其中N1大于N2。

公开(公告)号：US07795999B2

公开(公告)日：2010-09-14

申请号：US11878747

申请日：2007-07-26

申请人： Yasufumi Kaneda ,  Osamu Kawachi ,  Seiichi Mitobe ,  Kouta Ookubo

发明人： Yasufumi Kaneda ,  Osamu Kawachi ,  Seiichi Mitobe ,  Kouta Ookubo

IPC分类号： H03H9/64

CPC分类号： H03H9/6476 ,  H03H9/14582

摘要： A filter includes a first filter that is connected between an input node and an output node and is a surface acoustic wave filter, and a second filter that is provided between the input node and the output node and is connected in parallel with the first filter. The first filter has a total number N1 of pairs of electrode fingers of interdigital transducers and the second filter having a total number N2 of pairs of electrode fingers of interdigital transducers, in which N1 is greater than N2.

摘要翻译： 滤波器包括连接在输入节点和输出节点之间并且是表面声波滤波器的第一滤波器，以及设置在输入节点和输出节点之间并与第一滤波器并联连接的第二滤波器。 第一滤波器具有交叉指型换能器的电极指数对N1的总数，并且第二滤波器具有跨数字换能器的电极指对的总数N2，其中N1大于N2。