Using an innovative topology combining printed rectifying antennas (rectennas), a Rotman lens, and diodes, researchers have developed a system for harvesting of RF energy in the 28-GHz 5G spectrum.

We’ve seen our share of 3D printed antennas before, but none as well documented and professionally tested as [Glenn]’s 3D printed and metalized horn antennas. It certainly helps that [G… ...