Phased array antenna and phase control method therefor

摘要

In a phased array antenna that has a configuration in which a plurality of antenna panels, in each of which a plurality of antenna elements are arrayed, are connected in the form of a plane and that radiates power transmission microwaves in the arrival direction of a pilot signal sent from an electric-power receiving facility (rectenna system), by controlling the phases of signals input to and output from the antenna elements. An arithmetic processing section, which is provided in each of the antenna panels, calculates the phase shifts of power transmission microwaves to be radiated from the antenna elements. Then, the phase information indicating the phase shifts calculated by the arithmetic processing section is sent to at least three adjacent antenna panels by a transmission and reception section provided in each of the antenna panels.

主权项

1. A phased array antenna comprising:
a plurality of antenna panels; a plurality of antenna elements arrayed in each of the plurality of antenna panels, the plurality of antenna elements being connected in a form of a plane, the plurality of antenna elements radiating signals in an arrival direction of a pilot signal sent from an electric-power receiving facility, a phase of signals output from the plurality of antenna elements being controllable; an arithmetic processing section provided in each of the plurality of antenna panels, the arithmetic processing section determining a phase shift of the signals radiated from a respective one of the plurality of antenna elements based on a position of the respective one of the plurality of antenna panels, and an adjacent panel phase shift sent from an adjacent one of the plurality of antenna panels; a reception part in each of the plurality of antenna panels to receive the adjacent panel phase shift determined by another arithmetic processing section of an adjacent one of the plurality of antenna panels; and a transmission part in each of the plurality of antenna panels to send the phase shift determined by the arithmetic processing section to at least three adjacent ones of the plurality of antenna panels.