Atténuation des interférences entre les antennes téléphoniques

Did you know that a 5G smartphone has more than eight antennas, which together with other factors create interference to be mitigated?

The radios and the interference task available in CST Studio Suite® allow you to set up a scenario and propose a solution.

The first mobile phone call has been taken place in 1973 and it is truly amazing how much progress has been made in the world of cell phones over the past 50 years. With each new generation “G”, the data carrying capacity of the network increases, latency decreases and the number of antennas used in each device increases. A 4G phone has already between 4 and 8 antennas. 5G phones need even more antennas due to the addition of new 5G bands and requirements such as 4×4 multiple input, multiple output (MIMO), dual connectivity EUTRA (EN-DC)/dual UL, mmWave, as well as emerging standards like UWB. With the increase in the number of antennas sharing the same surface and located one close to others, it becomes difficult to maintain good performance and avoid interference that may be created between these antennas themselves, or between antennas and PCB buses without particular measurements.

The objective of this study is to exploit the “Interference Task” functionality available in CST Studio Suite® to understand by simulation the input-output behavior of our system composed of different radios. Then we will check if unwanted or defective outputs can occur in order to propose acceptable solutions to eliminate or reduce possible violations.