https://www.electronicdesign.com/markets/automation/article/21164377/electronic-design-rotman-lens-antenna-system-harvests-28-ghz-5g-energy
Rotman-Lens Antenna System Harvests 28-GHz 5G Energy | Electronic Design
Using an innovative topology combining printed rectifying antennas (rectennas), a Rotman lens, and diodes, researchers have developed a system for harvesting...
rotman lens28 ghzantennasystemharvests