A Complete Collection of 100000 Whys
Fav十万个为什么
为什么WiFi穿墙信号变弱？
简单的摘要：WiFi穿墙信号变弱的原因主要是墙壁的阻挡和吸收、信号频率的影响以及多径衰落效应。
1、墙壁等障碍物会阻挡和吸收WiFi信号，导致信号强度减弱，尤其是金属材料或混凝土等密实材料对信号衰减更大。
2、WiFi信号频率越高，波长越短，穿透能力越差，因此5GHz频段的WiFi信号比2.4GHz频段更容易在穿墙后变弱。
3、WiFi信号在传播过程中会遇到各种物体产生反射、折射和散射，形成多径信号，这些多径信号相互干扰，导致接收到的信号强度下降，即多径衰落。
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