Antenna structure

An antenna structure, comprising:

• a substrate, comprising a first surface and a second surface opposite to each other;
• a grounding surface, disposed on the first surface;
• and
• an antenna module, disposed on the second surface and comprising:
• a feeding point;
• a micro strip, extending along a first axial direction and comprising a first end and a second end opposite to each other, a first segment and a second segment located between the first end and the second end, wherein the first end is connected to the feeding point, and a width of the first segment is smaller than a width of the second segment;
• n radiators, staggeredly connected to two sides of the micro strip along the first axial direction, wherein n is an even number, counted from the first end, a plurality of odd-numbered radiators of the n radiators extends from one of the two sides of the micro strip in a second axial direction, and a plurality of even-numbered radiators of the n radiators extends from the other one of the two sides of the micro strip in an opposite direction of the second axial direction, the odd-numbered radiators are staggered with the even-numbered radiators, and a plurality of widths of the n radiators from the first end to the second end along the first axial direction is increased first and then decreased;
• and
• n coupling elements, spaced apart from the micro strip and the n radiators, wherein a plurality of odd-numbered coupling elements of the n coupling elements is disposed on one of the two sides of the micro strip, and a plurality of even-numbered coupling elements of the n coupling elements is disposed on the other one of the two sides of the micro strip,
• wherein the first to the n/2th coupling elements of the n coupling elements, counted from the first end, are disposed by the sides facing the first end of the first to the n/2th radiators of the n radiators, and an (n/2+1)th to the nth coupling elements are disposed by the sides facing the second end of the (n/2+1)th of the n radiators.