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    • 1. 发明授权
    • Duplexer and electronic device
    • 双工器和电子设备
    • US08274342B2
    • 2012-09-25
    • US13167620
    • 2011-06-23
    • Jun TsutsumiKazuhiro MatsumotoShogo Inoue
    • Jun TsutsumiKazuhiro MatsumotoShogo Inoue
    • H03H7/46H04B1/48H03H9/70
    • H03H9/725H01P1/213H03H9/0571H03H9/0576H03H9/70
    • A duplexer includes a transmission filter connected between a common terminal and a transmission terminal, a reception filter connected between the common terminal and a reception; and a capacitor connected in parallel with the transmission filter and the reception filter between the transmission terminal and the reception terminal and has a capacitance so that a phase difference between a signal passing from the transmission terminal to the reception terminal through the transmission filter and the reception filter and a signal passing from the transmission terminal to the reception terminal through the capacitor, or connected in parallel with the reception filter between the common terminal and the reception terminal and has a capacitance so that a phase difference between a signal passing from the common terminal to the reception terminal through the reception filter and a signal from the common terminal to the reception terminal through the capacitor.
    • 双工器包括连接在公共终端和发送终端之间的发送滤波器,连接在公共终端和接收之间的接收滤波器; 以及与发送滤波器和发送端子与接收端子之间的接收滤波器并联连接的电容器,并具有电容,使得通过发送滤波器从发送端子到接收端子的信号之间的相位差和接收 滤波器和通过电容器从发送端子传递到接收端子的信号,或者在公共端子和接收端子之间与接收滤波器并联连接,并且具有电容,使得从公共端子通过的信号之间的相位差 通过接收滤波器向接收端子发送信号,通过电容器将信号从公共端子发送到接收端子。
    • 4. 发明申请
    • FILTER, DEMULTIPLEXER, AND MODULE INCLUDING DEMULTIPLEXER, COMMUNICATION APPARATUS
    • 滤波器,解复用器和模块,包括解复用器,通信设备
    • US20100150075A1
    • 2010-06-17
    • US12709182
    • 2010-02-19
    • Shogo InoueJun TsutsumiTakashi MatsudaMasanori Ueda
    • Shogo InoueJun TsutsumiTakashi MatsudaMasanori Ueda
    • H04W4/00H03H7/12
    • H03H9/0576H03H9/725
    • A demultiplexer has a common terminal, a transmission terminal, and a reception terminal, and furthermore includes a transmission filter connected between the common terminal and the transmission terminal, a reception filter connected between the common terminal and the reception terminal, and a phase shift circuit connected in series to the reception filter connected between the common terminal and the reception terminal. A node on the line from the phase shift circuit to the common terminal or the transmission terminal, and a node on the line from the phase shift circuit to the reception terminal are coupled via a reactance. Accordingly, it is possible to fundamentally reduce or eliminate the situation in which transmission signals from the transmission filter arrive at the reception circuit, and improve isolation.
    • 解复用器具有公共端子,发送端子和接收端子,并且还包括连接在公共端子和发送端子之间的发送滤波器,连接在公共端子和接收端子之间的接收滤波器以及相移电路 与连接在公共端子和接收端子之间的接收滤波器串联连接。 从相移电路到共用端子或发送端子的线路上的节点,以及从相移电路到接收端子的线路上的节点经由电抗耦合。 因此,可以从根本上减少或消除来自发送滤波器的发送信号到达接收电路并且改善隔离的情况。