Elliptical Focused Energy Beam Sweeping toward Rectenna Array in Wireless-Powered Structural Health Monitoring

A focused energy beam with an elliptical cross-section is described as a fixed energy beam suitable for a horizontally long-shaped rectenna array when radiating the energy beam from a moving vehicle. An elliptical energy beam provides a favorable power distribution with slow power tapering over a horizontal rectenna array. Simulation results show that our scheme significantly increased accumulated received energy in a short period of energy beam radiation.