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    • 5. 发明公开
    • HIGH FREQUENCY SWITCH
    • EP3444890A1
    • 2019-02-20
    • EP18785220.7
    • 2018-03-05
    • Mitsubishi Electric Corporation
    • SAITO, TetsunariKOMARU, RyotaNAKAHARA, Kazuhiko
    • H01P1/15H04B1/44
    • A high-frequency switch (100) includes: a first transistor (7) connected to an input terminal (1) and a first output terminal (3); a second transistor (9) connected to the first output terminal; a third transistor (10) connected to the second transistor and grounded; a resistor (11) connected to a connection between the second and third transistors and grounded; a switching circuit switchable between a state in which the switching circuit allows passage of a transmitted/received signal between the input terminal and a second output terminal (2) and a state in which the switching circuit cuts off the transmitted/received signal; and a control unit (101) to control the first, second, and third transistors and the switching circuit. At the time of reception, the control unit brings the switching circuit into the state in which the switching circuit cuts off the transmitted/received signal, places the first and third transistors in an on-state, and places the second transistor in an off-state. At the time of transmission and reception with an automatic gain control operation, the control unit brings the switching circuit into the state in which the switching circuit allows the passage of the transmitted/received signal, brings the first and third transistors in an off-state, and brings the second transistor in an on-state.
    • 10. 发明公开
    • Radio frequency switch
    • Hochfrequenzschalter
    • EP2738947A1
    • 2014-06-04
    • EP14000687.5
    • 2006-12-22
    • KMW Inc.
    • Moon, Young ChanLEE, Kang-Hyun
    • H04B1/44H01P1/15H01P5/10
    • H04B1/48H01P1/15H01P5/1007
    • Disclosed is a radio frequency (RF) switch including: a circulator having first to third nodes, which are connected to first to third ports, respectively; and a slot line pattern unit installed in a connection line between the third node of the circulator and the third port so as to carry out signal transmission or interception, wherein the slot line pattern unit includes a switching circuit, which is installed at a predetermined location so as to transmit or intercept a signal by maintaining or short-circuiting a gap of a slot line corresponding to the installed location according to an external switching control signal.
    • 公开了一种射频(RF)开关,包括:具有分别连接到第一至第三端口的具有第一至第三节点的循环器; 以及槽线图案单元,其安装在所述循环器的第三节点与所述第三端口之间的连接线中,以执行信号传输或截取,其中所述缝隙线图案单元包括切换电路,其安装在预定位置 以便通过根据外部开关控制信号维持或短路与安装位置相对应的缝隙线的间隙来发送或截取信号。