Arbitrarily polarized microwave power transmission technologies

Abstract

Arbitrarily polarized microwave power transmission technologies including polarization auto-matching retrodirective transmitting method and arbitrarily polarized microwave rectenna are proposed in this paper. The polarization auto-matching retrodirective transmitting method using phase conjugating circuits and polarization rotators can receive any polarized pilot signal and generate predictable polarized beam aimed back to the rectenna. The arbitrarily polarized microwave rectenna introducing a directional coupler between dual-polarized antenna and rectifying circuits can receive any polarized microwave and equally distribute it to two rectifying circuits to maintain high rectifying efficiency.