5G mmWave signals are more likely to be blocked by physical barriers such as walls, buildings, and trees because these signals operate at higher frequencies with shorter wavelengths. The shorter wavelength makes it harder for the signals to penetrate through objects, as the size of the physical obstacles becomes large relative to the wavelength. Consequently, mmWave signals are more easily absorbed, reflected, or scattered by these barriers, resulting in significant attenuation and blockage. This contrasts with lower frequency signals, which have longer wavelengths and can more effectively penetrate through physical barriers. Additionally, mmWave signals have limited ability to bend around obstacles, making line-of-sight more critical for maintaining signal strength.
