Abstract: A composite antenna includes a dipole antenna element and a circularly polarized antenna element. The dipole antenna element includes a first hot terminal, a ground terminal, a first element extending from the first hot terminal, and a second element extending from the ground terminal. The circularly polarized antenna element includes a second hot terminal disposed on a line connecting the first hot terminal and the ground terminal so as to be sandwiched therebetween, a third element extending from the second hot terminal, and a fourth element extending from the ground terminal perpendicularly with respect to the third element.

Abstract: A composite antenna includes a dipole antenna element and a circularly polarized antenna element. The dipole antenna element includes a first hot terminal, a ground terminal, a first element extending from the first hot terminal, and a second element extending from the ground terminal. The circularly polarized antenna element includes a second hot terminal disposed on a line connecting the first hot terminal and the ground terminal so as to be sandwiched therebetween, a third element extending from the second hot terminal, and a fourth element extending from the ground terminal perpendicularly with respect to the third element.

Abstract: An antenna device includes an antenna base having a longitudinal direction, a first antenna element on the antenna base, and a pair of second antenna elements on the antenna base, the pair of second antenna elements being capable of transmitting and receiving radio waves in a higher frequency band than the first antenna element. In a planar view, when the antenna base is divided into four regions by a first line segment along the longitudinal direction and a second line segment orthogonal to the first line segment intersecting each other at the center point of the first antenna element, a region where one of the pair of second antenna elements is located is not adjacent to a region where the other of the pair of second antenna elements is located.

Abstract: An antenna device includes an antenna base having a longitudinal direction, a first antenna element on the antenna base, and a pair of second antenna elements on the antenna base, the pair of second antenna elements being capable of transmitting and receiving radio waves in a higher frequency band than the first antenna element. In a planar view, when the antenna base is divided into four regions by a first line segment along the longitudinal direction and a second line segment orthogonal to the first line segment intersecting each other at the center point of the first antenna element, a region where one of the pair of second antenna elements is located is not adjacent to a region where the other of the pair of second antenna elements is located.