【摘要】 利用频谱仪和探头,测量了2G、3G、4G手机响铃瞬间的信号和华东师大一教的手机信号屏蔽器的信号,得到了相关数据,测量结果可为手机信号屏蔽器的生产厂商提供参考.更多还原

【Abstract】 Using spectrometer and probe,the 2G,3G,4G mobile phone signals of China Mobile and the signal of signal shielding device were measured at the first teaching building of East China Normal University.The results could provide references for the manufacturers of signal shielding device.更多还原