Abstract: A patch antenna includes: a substrate; a first radiator disposed on the substrate and having a first shape; a second radiator disposed on the substrate while being spaced a predetermined distance apart from the first radiator, and having a second shape; and a power feeder which supplies a power feed signal to the first radiator, wherein the first radiator includes a first outer edge portion straightly formed in the horizontal direction and second outer edge portions vertically formed from both ends of the first outer edge portion.

Abstract: An array antenna includes: a first radiation body of which one end is connected to a first power supply line; a second radiation body of which one end is connected through a second power supply line connected to the other end of the first radiation body; a third radiation body of which one end is connected through a third power supply line connected to the other end of the second radiation body; and a fourth radiation body of which one end is connected through a fourth power supply line connected to the other end of the third radiation body, wherein the first and second radiation bodies are formed to be symmetrical with the third and fourth radiation bodies on the basis of the third power supply line.