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    • 28. 发明授权
    • Apparatus for measuring in-phase and quadrature (IQ) imbalance
    • 用于测量同相和正交(IQ)不平衡的装置
    • US07995645B2
    • 2011-08-09
    • US12027762
    • 2008-02-07
    • Kyeongho LeeJoonbae ParkJeong Woo LeeSeung-Wook LeeEal Wan Lee
    • Kyeongho LeeJoonbae ParkJeong Woo LeeSeung-Wook LeeEal Wan Lee
    • H04B3/46
    • H03D7/166H03D3/009H04L25/061H04L27/364H04L27/3863H04L2027/0016
    • The present general inventive concept relates to apparatuses and/or methods for measuring an in-phase and quadrature (IQ) imbalance. In one embodiment, a signal generator can provide a first IQ signal of a DC component during a first period and the first IQ signal of a first angular frequency during a second period, an IQ up-conversion mixer can up-convert the first IQ signal by a second angular frequency during the first period and up-convert the first IQ signal by a third angular frequency during the second period to output a second IQ signal, an IQ down-conversion mixer can down-convert the second IQ signal by the third angular frequency to output a third IQ signal and an IQ imbalance detector can obtain a first IQ imbalance (e.g., Rx IQ imbalance) from the third IQ signal during the first period and a second IQ imbalance (e.g., Tx/Rx IQ imbalance) during the second period.
    • 本总体发明构思涉及用于测量同相和正交(IQ)不平衡的装置和/或方法。 在一个实施例中,信号发生器可以在第一周期期间提供DC分量的第一IQ信号,并且在第二周期期间提供第一角频率的第一IQ信号,IQ上变频混频器可以上变频第一IQ信号 在第一周期期间以第二角度频率进行第二角度频率,并且在第二周期期间将第一IQ信号上升转换第三角度频率以输出第二IQ信号,IQ降频转换混频器可以将第二IQ信号下变频第三IQ信号 输出第三IQ信号和IQ不平衡检测器的角频率可以在第一周期期间从第三IQ信号和第二IQ不平衡(例如,Tx / Rx IQ不平衡)获得第一IQ不平衡(例如,Rx IQ不平衡) 第二期。