Antenna device

An antenna device comprising:

• an antenna panel;
• one input terminal through which a high-frequency signal is input;
• and
• a feeding circuit which distributes the high-frequency signal input to the input terminal to a plurality of antenna elements provided on the antenna panel,
• wherein the feeding circuit includes:
• at least one first-stage branch circuit which includes one input and two outputs;
• at least two second-stage branch circuits which receive outputs of the first-stage branch circuit and include one input and two outputs;
• and a combining circuit which includes two inputs and one output and receives two outputs selected from the outputs of the first-stage branch circuit and outputs of the second-stage branch circuit, and wherein the combining circuit is a linear circuit and only outputs the linear sum of the two inputs signals.