Antenna apparatus

An antenna apparatus, comprising:

• a ground layer having at least one through-hole;
• a patch antenna pattern disposed above the ground layer;
• a feed via disposed to penetrate through the at least one through-hole and electrically connected to the patch antenna pattern;
• ring-type meta patterns arranged to surround at least portions of side boundaries of the patch antenna pattern and have spaces therebetween, the spaces having a first gap;
• and
• coupling-type meta patterns arranged to surround at least portions of the side boundaries of the patch antenna pattern in positions more distant from the patch antenna pattern than positions in which the ring-type meta patterns are arranged and arranged to form cavities having a second gap therebetween, the second gap being greater than the first gap.

An antenna apparatus, comprising:

• a ground layer having one or more through-holes;
• patch antenna patterns each disposed above the ground layer;
• feed vias disposed to penetrate through the one or more through-holes, and electrically connected to the patch antenna patterns, respectively;
• ring-type meta patterns arranged in a horizontal direction and a vertical direction between the patch antenna patterns;
• coupling-type meta patterns alternately arranged in the horizontal direction and the vertical direction between the patch antenna patterns and arranged in positions more distant from the patch antenna patterns than positions in which the ring-type meta patterns are arranged;
• and
• array vias connecting the ring-type meta patterns to each other in the vertical direction,
• wherein the coupling-type meta patterns are disconnected from each other in the horizontal direction and the vertical direction.

An antenna apparatus, comprising:

• a ground layer;
• patch antenna patterns disposed on the ground layer;
• feed vias disposed to electrically connect the patch antenna patterns, respectively;
• first-type meta patterns peripherally disposed around each of the patch antenna patterns;
• and
• second-type meta patterns alternately disposed between the first-type meta patterns of adjacent ones of the patch antenna patterns,
• wherein each of the second-type meta patterns is spaced apart from each other, and each of the first-type meta patterns is spaced apart from each other.