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发明公开
CN105207640A 用于无线通信装置的功率及阻抗测量电路 有权

用于无线通信装置的功率及阻抗测量电路
摘要：
本申请涉及用于无线通信装置的功率及阻抗测量电路。所揭示的示范性实施例是针对可用以测量功率及/或阻抗的功率及阻抗测量电路。一种测量电路可包括传感器及计算单元。所述传感器可感测(i)跨越耦合到负载的串联电路的第一电压信号以获得第一所感测信号；及(ii)所述串联电路的指定端处的第二电压信号以获得第二所感测信号。所述传感器可(i)将第一所感测信号的第一版本与第二所感测信号的第一版本混频以获得第一传感器输出；及(ii)将第一所感测信号的第二版本与第二所感测信号的第二版本混频以获得第二传感器输出。所述计算单元可基于所述传感器输出来确定所述串联电路的指定端处的所述阻抗及/或所递送功率。
摘要（英）：

Exemplary embodiments disclosed are directed to power and impedance measurement circuits that may be used to measure power and/or impedance are described. A measurement circuit may include a sensor and a computation unit. The sensor may sense (i) a first voltage signal across a series circuit coupled to a load to obtain a first sensed signal and (ii) a second voltage signal at a designated end of the series circuit to obtain a second sensed signal. The sensor may mix (i) a first version of the first sensed signal with a first version of the second sensed signal to obtain a first sensor output and (ii) a second version of the first sensed signal with a second version of the second sensed signal to obtain a second sensor output. The computation unit may determine the impedance and/or delivered power at the designated end of the series circuit based on the sensor outputs.

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