Keysight published a 14-minute video back in 2015 that gives you the basics behind RF beamforming and its use in 5G applications. The video also invites you to download a free, 30-day trial of Keysight’s SystemVue with Keysight’s 5G simulation library to try out some of the concepts discussed in the video and the link appears to be active still.
Here’s the video:
Meanwhile, should you need an implementation technology for RF beamforming (5G or otherwise), allow me to suggest that the new Xilinx Zynq UltraScale+ RFSoC with its many integrated RF ADCs and DACs be at the top of your technology choices. There is literally no other device like the Zynq UltraScale+ RFSoC. It’s in a category of one.
For more information about the Zynq UltraScale+ RFSoC, see: