Antenna

An antenna comprising:

• a dielectric layer including a first main surface and a second main surface opposite to the first main surface;
• a conductive ground layer formed on the first main surface;
• a first radiation element that is formed on the second main surface and is conductive;
• and
• a second radiation element that is formed side by side with the first radiation element on the second main surface and is conductive, wherein
• the first radiation element includes a first non-uniform width part having a width in a direction parallel to a first side in a linear shape opposed to a first vertex part, the width of the first non-uniform width part gradually decreasing in a direction from the first side to the first vertex part, and
• the second radiation element includes a second non-uniform width part having a width in a direction parallel to a second side in a linear shape opposed to a second vertex part, the width of the second non-uniform width part gradually decreasing in a direction from the second side to the second vertex part.