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    • 37. 发明申请
    • BRANCHING FILTER, AND WIRELESS COMMUNICATION MODULE AND WIRELESS COMMUNICATION DEVICE USING SAME
    • 分支过滤器,无线通信模块和无线通信设备
    • US20110169588A1
    • 2011-07-14
    • US13121071
    • 2009-08-31
    • Yutaka Makino
    • Yutaka Makino
    • H03H7/46
    • H01P1/20345H01P1/2135H03H2001/0085
    • Provided are a branching filter capable of well branching two electrical signals having a wide frequency band, and a wireless communication module and wireless communication device using same. The branching filter is provided with an input terminal (11), a first output terminal (12a), a second output terminal (12b), a first line conductor (14a) which is electromagnetically coupled to a resonator (13a) of an input stage so as to interconnect the input terminal (11) and the first output terminal (12a), a capacitor (15a) which interconnects the first line conductor (14a) and ground, and a second line conductor (14b) which is electromagnetically coupled to a resonator (13b) of an output stage and is connected to the second output terminal (12b), wherein a low pass filter is configured from the first line conductor (14a) and the capacitor (15a), and a band pass filter is configured from the first line conductor (14a), the second line conductor (14b), and a plurality of resonators. The branching filter eliminates the need for a phase circuit and thus is capable of well branching two signals having a wide frequency band.
    • 提供了能够良好地分支具有宽频带的两个电信号的分波器滤波器,以及使用它的无线通信模块和无线通信装置。 分路滤波器设置有输入端子(11),第一输出端子(12a),第二输出端子(12b),电磁耦合到输入级的谐振器(13a)的第一线路导体(14a) 以将互连第一线路导体(14a)和地线的电容器(15a)和与第一线路导体(14a)电连接的第二线路导体(14b)互连,以便互连输入端子(11)和第一输出端子 谐振器(13b)并连接到第二输出端子(12b),其中低通滤波器由第一线路导体(14a)和电容器(15a)构成,带通滤波器由 第一线路导体(14a),第二线路导体(14b)和多个谐振器。 分路滤波器消除了对相位电路的需要,因此能够良好地分支具有宽频带的两个信号。