Antenna

An antenna, comprising:

• a feeding part, comprising,
• a first dielectric substrate, wherein a surface of the first dielectric substrate is covered with a metal layer, and an end of the first dielectric substrate is an input port of the feeding part,
• multiple parallel plated-through holes disposed on the first dielectric substrate, wherein an arrangement direction of the plated-through holes is perpendicular to an end face of the first dielectric substrate, and the multiple parallel plated-through holes are arranged along sides, except a side at which the input port is located, of the first dielectric substrate, and
• a coupling groove disposed in a part that is of the first dielectric substrate and that is close to an end opposite to the input port, a bottom of the coupling groove is the surface of the first dielectric substrate, a groove wall is a section of the metal layer, and the coupling groove is located inside space formed by an arrangement of the plated-through holes;
• and
• a radiating part, comprising,
• a second dielectric substrate, wherein a surface of the second dielectric substrate is covered with a metal layer, and an end of the second dielectric substrate is a radiation port,
• a row of parallel plated-through holes disposed on either side that is of the second dielectric substrate and that is adjacent to the radiation port, wherein an arrangement direction of the plated-through holes is perpendicular to an end face of the second dielectric substrate, and
• an end, opposite to the radiation port, of the second dielectric substrate connected to the part, at which the coupling groove is disposed, of the first dielectric substrate, and covers the coupling groove.