Antenna apparatus

1. An antenna apparatus, comprising:

a plurality of patch antenna patterns including M number of patch antenna patterns arranged in a first direction and N number of patch antenna patterns arranged in a second direction, where M and N are natural numbers;

a plurality of side coupling patterns coplanar with the plurality of patch antenna patterns and spaced apart from the plurality of patch antenna patterns along the second direction such that at least one of the plurality of side coupling patterns is disposed between adjacent patch antenna patterns along the second direction, each of the side coupling patterns being electromagnetically coupled to one of the patch antenna patterns in the second direction; and

a side ground pattern disposed between the plurality of patch antenna patterns with respect to the first direction and disposed between the plurality of side coupling patterns with respect to the first direction,

wherein the plurality of side coupling patterns have a same height as the plurality of patch antenna patterns, and are floating conductive patterns.

2. The antenna apparatus of claim 1 , wherein a width of the side ground pattern in the first direction is greater than a width of each of the side coupling patterns in the second direction.

3. The antenna apparatus of claim 1 , wherein a spacing distance between the side ground pattern and each of the patch antenna patterns in the first direction is greater than a spacing distance between each of the side coupling patterns and the patch antenna patterns in the second direction.

4. The antenna apparatus of claim 1 , wherein a length of the side ground pattern along the second direction is greater than a distance, along the second direction, from an end of a first outermost patch antenna pattern, from among the plurality of patch antenna patterns, to an end of a second outermost patch antenna pattern, from among the plurality of patch antenna patterns.

5. The antenna apparatus of claim 1 , further comprising:

a ground plane spaced apart from the plurality of patch antenna patterns in a third direction; and

a ground connection via electrically connecting the ground plane and the side ground pattern to each other.

6. The antenna apparatus of claim 5 , wherein at least one of the side coupling patterns is separated from the ground plane.

7. The antenna apparatus of claim 1 , further comprising:

a plurality of feed vias, each feed via being electrically connected to a corresponding patch antenna pattern of the plurality of patch antenna patterns; and

a plurality of feed lines, each feed line being electrically connected to a corresponding feed via of the plurality of feed vias and disposed perpendicularly to the corresponding feed via,

wherein each of the feed lines perpendicularly extends from the corresponding feed via.

8. The antenna apparatus of claim 7 , further comprising:

a ground plane having at least one through-hole through which the plurality of feed vias penetrate, the ground plane being disposed between the plurality of feed lines and the plurality of patch antenna patterns.

9. The antenna apparatus of claim 8 ,

wherein at least one of the M number and the N number is a natural number greater than or equal to 3, and

wherein a direction in which a first feed line, from among the plurality of feed lines, electrically connected to a patch antenna pattern of the plurality of patch antenna patterns disposed most adjacent to one corner of the ground plane extends is perpendicular to a direction in which a second feed line, from among the plurality of feed lines, electrically connected to a patch antenna pattern of the plurality of patch antenna patterns disposed most adjacent to a center of the ground plane extends.

10. The antenna apparatus of claim 8 , further comprising:

a plurality of first wiring vias, each first wiring via being electrically connected to a corresponding feed line of the plurality of feed lines; and

an integrated circuit electrically connected to the plurality of first wiring vias.