a远场区是指电磁场和天线分离开来,以平面波的方式在空间传播。近场和远场的界限取决于传输的频率和电线尺寸,通常由下列两种近似公式来计算两者边界: The distant field area is refers to the electromagnetic field and the antenna separates, by plane wave way in spatial dissemination.The near field and the...