按传统的 Hayt 和 Kemmerly 电路教科书,电功率定义为电压与电流的乘积,即:P=V×i。因此,为测量射频或微波功率,必须测量射频电压和电流,并将它们相乘在一起,然而这难以实现。射频电压和电流测量值相乘得到的是瞬时功率,工程师们通常最感兴趣的是传到负载的平均功率。为了从这些测量值中得到平均功 According to the conventional Hayt and Kemmerly circuit textbooks, electrical power is defined as the product of voltage and current, ie: P = V × i. Therefore, to measure RF or microwave power, RF voltages and currents must be measured and multiplied together, however this is difficult to achieve. Multiplying RF voltage and current measurements yields instantaneous power, and engineers are generally most interested in the average power delivered to the load. In order to get the average work from these measurements