Antenna, antenna device, and antenna unit

An antenna device comprising:

• a first antenna;
• and
• a first coaxial cable connected to the first antenna,
• the first antenna including
• a first feed portion,
• a first element connected to the first feed portion, the first element rising with respect to a surface of a predetermined member, and
• a second element connected to the first feed portion, the second element extending along a direction in which an angle formed by the second element with the surface is smaller than an angle formed by the first element with the surface.

An antenna unit comprising a plurality of antennas, wherein

• each of the plurality of antennas includes a feed portion, and a first element and a second element, the first element and the second element being configured to be fed at the feed portion,
• the first element rises with respect to a surface of a predetermined member,
• the second element extends along a direction in which an angle formed by the second element with the surface is smaller than an angle formed by the first element with the surface, and
• the plurality of antennas are close to or in contact with each other.