Radio Frequency (RF) & Wireless Design

Created by Steven Minichiello on 27 April, 2018

Good article on 5G in the mmWave where Line-Of-Sight (LOS) is the norm

Although there are many providers that are pushing for rolling out 5G networks for the latest cellular communications, there is something that needs to be understood clearly to be seen and appreciated; that is that 5G mmWave (27 ~ 40 GHz) is really only intended for Line-Of-Sight (LOS) applications.


This means that if there is going to be any implementation of the 5G mmWave bands in the 27 ~ 40 GHz range, that at this frequency and for the power levels used, that the range is severely limited ! The fact that higher frequency spectrums allow for higher data rates is absolutely true, however this comes with another ugly reality; and this is that unless you can physically 'see' the tower of antennas, you are likely going to be bandwidth limited or range hindered.


The illustrations shown here in the article showcase this :

https://www.electronicproducts.com/understanding-the-challenges-of-5g-mmwave/


Notice that for shopping malls, airports, sporting event arenas, and college/corporate campuses the 5G mmWave bands will work fine. However *do not* expect to be using the 5G mmWave (27 ~ 40 GHz) band while you are driving about in your car, as you will be likely cut off within a mile from the tower.


Its important that people understand the benefits as well as the limitations of the newer 5G technologies (as well as the safety issues too) and be prepared to be disappointed if you expect high data rates for long distances.