Antenna apparatus

An antenna apparatus comprising:

• a ground plane extending in a first direction and a second direction perpendicular to the first direction;
• a first end-fire antenna pattern spaced apart from an edge of the ground plane in the first direction;
• a second end-fire antenna pattern spaced apart from the edge of the ground plane in the first direction and spaced apart from the first end-fire antenna pattern in the second direction;
• a first feed via comprising a first end and a second end, the first end of the first feed via being electrically connected to the first end-fire antenna pattern;
• a second feed via comprising a first end and a second end, the first end of the second feed via being electrically connected to the second end-fire antenna pattern;
• a first feed line comprising a first end and a second end, the first end of the first feed line being electrically connected to the second end of the first feed via;
• and
• a second feed line comprising a first end and a second end, the first end of the second feed line being electrically connected to the second end of the second feed via,
• wherein the first feed via extends away from the first feed line in a third direction perpendicular to the first direction,
• the second feed via extends away from the second feed line in a direction opposite to the third direction, and
• the ground plane comprises:
• a first recess in the edge of the ground plane, the first recess accommodating the second end of the first feed line;
• and
• a second recess in the edge of the ground plane, the second recess accommodating the second end of the second feed line.