Beam Pilot Signal and Both-side Retrodirective System for Early Social Implementation of Terrestrial Microwave Power Transmission

Abstract

  In terrestrial microwave power transmission systems, it is required to minimize the interference with communication and the influence on the human body. Retrodirective system that re-radiates a beam in the direction of arrival of a signal is well known as a beam control technique for accurate microwave power transmission. In this report, we newly propose to apply the retrodirective system to both transmitting and receiving antennas. A beam pilot signal with little leakage used in this system solves the multipath problem in horizontal propagation. The energy leakage to the outside of the system minimizes self-convergently while following the atmospheric fluctuation and the antenna vibration by repeating the retrodirective on both sides of the transmitting and receiving antenna.