Disadvantage 1: Large signal attenuation
When the wireless signal passes through the atmosphere, the signal will be attenuated due to absorption and scattering of the wireless signal. 5g mmWave is generally believed that the higher the frequency of the wireless signal, the greater the transmission loss and the closer the coverage distance.
However, there are exceptions to this rule for very high frequencies. The transmission of millimeter waves in the atmosphere is mainly affected by oxygen, humidity, fog and rain.
Disadvantage 2: Easy to be blocked
Not only can millimeter waves be easily blocked by buildings, but they can also be blocked by human activity itself, even by hands when holding a cell phone.
Disadvantage 3: Short propagation distance
This is mainly because millimeter wave is a high-frequency electromagnetic wave, which is an unavoidable fundamental flaw.
Is there a technology that can solve the defects of millimeter wave?
For example, short millimeter wave transmission distances, using antenna arrays to form beams to concentrate radio energy to increase transmission distances.
This solution directly makes the large size of the antenna array better suited for mobile terminals. This
It is necessary to bring the base station closer to the user, and many in the industry believe that millimeter wave networks will inevitably lead to an increase in the number of base stations around the user
Regarding users' concerns about radiation, foreign experts have confirmed during their research that millimeter waves used in 5G networks are non-ionizing, which means that they do not have enough energy to harm people, and users can rest assured that they will be able to use them.By:Barbie