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    • 5. 发明授权
    • Method and wireless communication device for using an antenna as a sensor device in guiding selection of optimized tuning networks
    • 用于使用天线作为传感器设备的方法和无线通信设备来引导选择优化的调谐网络
    • US09407335B2
    • 2016-08-02
    • US14068404
    • 2013-10-31
    • Google Technology Holdings LLC
    • Suresh K. RamasamyGregory R. BlackAaron L. DietrichGustavo D. LeizerovichDavid H. MinasiKoon K. Shee
    • H04B7/04H04B1/40H01Q1/44H03K17/955H01Q1/24
    • H04B7/0404H01Q1/243H01Q1/44H03K17/955
    • A method and system performs antenna tuning using detected changes in antenna self-capacitance in a wireless communication device. A modem detects changes in antenna self-capacitance by utilizing multiple antenna elements. The modem determines a current antenna loading condition using the detected changes in antenna self-capacitance. The modem determines appropriate tuning states for each antenna matching and tuning circuit (AMTC) associated with a respective antenna element. In order to determine the appropriate tuning states, the modem utilizes pre-established antenna self-capacitance information which is mapped to antenna tuning states. The antenna tuning states which are respectively mapped to pre-established antenna self-capacitance are empirically pre-determined by correlating antenna self-capacitance changes to antenna impedance changes. The modem is thus able to change the tuning states of multiple tunable matching circuits and perform antenna tuning using (a) detected real-time changes in antenna self-capacitance and (b) pre-established mappings of antenna self-capacitance and antenna tuning states.
    • 一种方法和系统使用无线通信设备中天线自身电容的检测变化来执行天线调谐。 调制解调器通过利用多个天线元件来检测天线自身电容的变化。 调制解调器使用检测到的天线自身电容的变化来确定当前的天线加载条件。 调制解调器确定与相应天线元件相关联的每个天线匹配和调谐电路(AMTC)的适当调谐状态。 为了确定适当的调谐状态,调制解调器利用映射到天线调谐状态的预先建立的天线自电容信息。 分别映射到预先建立的天线自身电容的天线调谐状态通过将天线自身电容变化与天线阻抗变化相关联来经验地预先确定。 因此,调制解调器能够改变多个可调谐匹配电路的调谐状态,并且使用(a)检测到的天线自电容的实时变化和(b)预先建立的天线自电容和天线调谐状态的映射来执行天线调谐 。