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    • 7. 发明授权
    • Attenuating antenna switch and communication device
    • 衰减天线开关和通讯装置
    • US08838044B2
    • 2014-09-16
    • US13610237
    • 2012-09-11
    • Satoshi GotoKazuaki HoriSatoshi Sakurai
    • Satoshi GotoKazuaki HoriSatoshi Sakurai
    • H04B1/44H04B1/10
    • H04B1/109Y02D70/00
    • An attenuating antenna switch may be used to suppress increase in the scale and power consumption of an RFIC. The antenna switch has a first terminal, a second terminal, and an antenna terminal coupled to the first and second terminals and configured to be connected to an antenna. The first switch switches between a first state in which a high frequency signal is propagated between the first terminal and the antenna terminal, and a second state in which the high frequency signal is interrupted. A second switch switches between the first and second states between the second terminal and the antenna terminal. The first and second switches are controlled in a mutually exclusive manner such that only one of the two switches can be in the first state at any given time. When in the first state, each switch adjusts an attenuation amount of the high frequency signal.
    • 可以使用衰减天线开关来抑制RFIC的规模和功耗的增加。 天线开关具有耦合到第一和第二端子并被配置为连接到天线的第一端子,第二端子和天线端子。 第一开关在高频信号在第一端子和天线端子之间传播的第一状态和高频信号被中断的第二状态之间切换。 第二开关在第二端子和天线端子之间的第一和第二状态之间切换。 第一和第二开关以相互排斥的方式进行控制,使得两个开关中只有一个可以在任何给定时间处于第一状态。 当处于第一状态时,每个开关调节高频信号的衰减量。