Feed pin, and patch antenna comprising same

A patch antenna comprising:

• a dielectric layer;
• an upper patch disposed on an upper surface of the dielectric layer;
• a lower patch disposed on a lower surface of the dielectric layer;
• and
• a feed pin passing through the upper patch, the dielectric layer, and the lower patch to feed the upper patch,
• wherein the feed pin includes:
• a feed head made of a plate-shaped conductive material with a first area;
• a stepped plate made of a plate-shaped conductive material having a second area and connected to a lower surface of the feed head;
• and
• a feed bar made of a polyhedral conductive material and connected to a lower surface of the stepped plate, wherein:
• the second area is an area of a horizontal cross section of the stepped plate formed to be smaller than the first area that is a horizontal cross section of the feed head,
• a first step is formed between the feed head and the stepped plate, and
• the feed head defines a first region connected to the stepped plate and a second region that is an outer perimetric area of the first region, wherein an inclined portion having inclination closer to an upper surface of the feed head toward an outer perimeter of the feed head is formed in the second region, and
• wherein a first area connected to the feed bar and a second area that is an outer perimetric area of the first area are defined on a lower surface of the stepped plate, and a plurality of bonding protrusions are formed in the second area of the stepped plate.