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    • 3. 发明授权
    • Two-port isolator and method for evaluating it
    • 双端口隔离器及其评估方法
    • US06940360B2
    • 2005-09-06
    • US10108360
    • 2002-03-29
    • Shigeru TakedaHideto HoriguchiYukinori AritaShinichirou TakeuchiYasushi KishimotoShinji Yamamoto
    • Shigeru TakedaHideto HoriguchiYukinori AritaShinichirou TakeuchiYasushi KishimotoShinji Yamamoto
    • H01P1/32H01P1/36
    • H01P1/36
    • A two-port isolator comprising a thin ferrite plate, a permanent magnet for applying a static magnetic field to the thin ferrite plate, first and second central conductors disposed substantially in a center portion of the thin ferrite plate and crossing each other with electric insulation, first and second input-output terminals each connected to an end of each of the first and second central conductors, a common terminal connected to the other ends of the first and second central conductors, a first matching capacitor connected between the first input-output terminal and the common terminal, a second matching capacitor connected between the second input-output terminal and the common terminal, and a resistor connected between the first input-output terminal and the second input-output terminal, wherein the DC resistance of the resistor is set, such that with loss in a high-frequency signal entering into the first input-output terminal and exiting from the second input-output terminal defined as insertion loss, and with loss in a high-frequency signal entering into the second input-output terminal and exiting from the first input-output terminal defined as isolation loss, the insertion loss is smaller than the isolation, and that the isolation loss increases as a static magnetic field applied to the two-terminal isolator from outside increases.
    • 一种双端口隔离器,包括薄铁氧体板,用于向薄铁氧体板施加静磁场的永磁体,基本上设置在薄铁氧体板的中心部分并且彼此交叉电绝缘的第一和第二中心导体, 第一和第二输入输出端子,各自连接到第一和第二中心导体中的每一个的端部,公共端子连接到第一和第二中心导体的另一端;第一匹配电容器,连接在第一输入 - 输出端子 公共端子,连接在第二输入输出端子和公共端子之间的第二匹配电容器和连接在第一输入 - 输出端子和第二输入 - 输出端子之间的电阻器,其中设置电阻器的DC电阻 使得随着进入第一输入 - 输出端并从第二输入 - 输出端退出的高频信号的损失 定义为插入损耗,并且在进入第二输入输出端子的高频信号中的损耗并且从被定义为隔离损耗的第一输入 - 输出端子退出时,插入损耗小于隔离,并且隔离损耗 随着从外部施加到两端隔离器的静态磁场而增加。