US 2026/0237915 A1Published application

Antenna device, array antenna, and antenna control method

AssigneeAxelspace Corporation

InventorsAtsushi SHIRANE, Kenichi OKADA, Makoto HIGAKI

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Abstract

There is provided a first circuit 20 to which a first signal is input and which is for adjusting phase and amplitude, and an antenna element 3 which is connected to the first circuit and which is for radiating electromagnetic waves, wherein the first circuit includes a first branch part 23 for branching the first signal, the first branch part comprises a first branch circuit 24 for branching the first signal and outputting a first branch signal, and a second branch circuit 25 for branching the first signal and outputting a second branch signal, the first branch circuit inputs the first branch signal to a first input part provided in the antenna element, and the second branch circuit includes a first delay circuit 25A for branching the first signal, imparting a first phase difference of 90 degrees relative to the first branch signal, and outputting the second branch signal.

Claims8

Dependent claims

An antenna device, comprising:

a first circuit to which a first signal is input and which is for adjusting phase and amplitude, and
an antenna element which is connected to the first circuit and which is for radiating electromagnetic waves, wherein
the first circuit comprises a first branch part for branching the first signal,
the first branch part comprises a first branch circuit for branching the first signal and outputting a first branch signal, and a second branch circuit for branching the first signal and outputting a second branch signal,
the first branch circuit inputs the first branch signal to a first input part provided in the antenna element,
the second branch circuit comprises a first delay circuit for branching the first signal, imparting a first phase difference of 90 degrees relative to the first branch signal, and outputting the second branch signal,
the first delay circuit inputs the second branch signal to a second input part provided in the antenna element in a direction orthogonal to the first branch signal, and
the antenna element radiates a circularly polarized wave in a first rotation direction based on a composite wave of the first branch signal input to the first input part and the second branch signal input to the second input part.

5 more elements

An antenna control method for an antenna device comprising a first circuit for adjusting phase and amplitude and an antenna element which is connected to the first circuit and which is for radiating electromagnetic waves, the method comprising the steps of:

inputting a first signal to the first circuit,
inputting one of the first signals branched from the first signal to a first branch circuit provided in the first circuit and outputting a first branch signal,
inputting the first branch signal to a first input part provided in the antenna element from the first branch circuit,
inputting another of the branched first signals to a second branch circuit provided in the first circuit, imparting, in a first delay circuit provided in the second branch circuit, a first phase difference of 90 degrees relative to the first branch signal to the other first signal, and outputting a second branch signal,
inputting the second branch signal to a second input part provided in the antenna element in a direction perpendicular to the first branch signal, and
radiating, in the antenna element, a circularly polarized wave in a first rotation direction based on a composite wave of the first branch signal input to the first input part and the second branch signal input to the second input part.

3 more elements

Dependencies are inferred from the claim text.