Antenna device, feed device, and feed method

A feed device comprising:

• an array antenna including multiple antenna elements that are bidimensionally arranged along a first axis and a second axis;
• a radio wave generator;
• a phase adjuster provided between the array antenna and the radio wave generator, and configured to adjust phases of transmission power signals that are respectively supplied from the radio wave generator to the multiple antenna elements, with respect to a first axis direction;
• an image acquiring device configured to acquire an image through a fisheye lens;
• circuitry configured to
• convert a first position of a marker that is included in the acquired image, into a second position of polar coordinates on a first plane that includes the first axis and the second axis, the first position being used in the image acquiring unit;
• and
• acquire, based on the second position, an elevation angle of a projected position that is obtained by projecting the first position onto a second plane including the first axis and a third axis, the elevation angle being relative to the third axis of the second plane;
• and
• a storage that stores multiple sets of phase data for respective elevation angles, the phase data indicating phases in which the transmission power signals are transmitted by the respective antenna elements to a power receiver that is situated at a position of the marker, the phases being adjusted such that the adjusted phases of the transmission power signals that are received by the antenna elements are matched,
• wherein the circuitry is configured to
• retrieve, from the storage, the phase data in association with the acquired elevation angle, and
• control the phase adjuster such that a direction of a beam, emitted by the array antenna based on the retrieved phase data, defines the elevation angle for the second plane;
• and
• perform power ramping on at least one given transmission among the transmission power signals, in a case where the phase adjuster adjusts the phases of the transmission power signals.

A feed method by a feed device that includes:

• an array antenna including multiple antenna elements that are bidimensionally arranged along a first axis and a second axis;
• a radio wave generator;
• a phase adjuster provided between the array antenna and the radio wave generator, and configured to adjust phases of transmission power signals that are respectively supplied from the radio wave generator to the multiple antenna elements, with respect to a first axis direction;
• an image acquiring device configured to acquire an image through a fisheye lens;
• circuitry configured to
• convert a first position of a marker that is included in the image acquired by the image acquiring unit, into a second position of polar coordinates on a first plane that includes the first axis and the second axis, the first position being used in the image acquiring device;
• acquire, based on the second position, an elevation angle of a projected position that is obtained by projecting the first position onto a second plane including the first axis and a third axis, the elevation angle being relative to the third axis of the second plane;
• and
• a storage that stores multiple sets of phase data for respective elevation angles, the phase data indicating phases in which the transmission power signals are transmitted by the respective antenna elements to a power receiver that is situated at a position of the marker, the phases being adjusted such that the adjusted phases of the transmission power signals that are received by the antenna elements are matched,
• wherein the circuitry is configured to
• retrieve, from the storage, the phase data in association with the acquired elevation angle, and
• control the phase adjuster such that a direction of a beam, emitted by the array antenna based on the retrieved phase data, defines the elevation angle for the second plane, wherein the phase data is phase data relating to the elevation angles that are within a predetermined included angle range, the feed method comprising:
• retrieving, from the storage, the phase data in association with the acquired elevation angle;
• controlling the phase adjuster such that the direction of the beam, emitted by the array antenna based on the retrieved phase data, defines the elevation angle for the second plane;
• and
• performing power ramping on at least one given transmission power signal among the transmission power signals, in a case where the phase adjuster adjusts the phases of the transmission power signals.