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1.前言在电磁场测量领域,最通用的方法是直接探测技术。由可动探头检测的 RF 信号通常通过一个软同轴电缆传送到接收机。由于电缆是明显带电的,并且电缆的移动是不可避免的,因而电场的干扰使测量准确度减小。也因为采用该方法的仪器通常难于构成多路探测系统,以在不干扰测量环境的情况下减小测试时间。
1. Introduction The most common method in the field of electromagnetic field measurement is the direct detection technique. The RF signal detected by the movable probe is usually transmitted to the receiver via a soft coaxial cable. Since the cable is clearly charged and the movement of the cable is unavoidable, the interference of the electric field reduces the measurement accuracy. Also, because it is often difficult to form multiplexed systems with instruments that employ this method to reduce test time without disturbing the measurement environment.