Antenna structure

An antenna structure, comprising:

• a first ground plane, comprising a narrow edge segment and a wide edge segment, wherein the first ground plane has a first slot;
• a feeding element, wherein the first slot of the first ground plane is excited by the feeding element;
• and
• a dielectric substrate, having a first surface and a second surface opposite to each other, wherein the first ground plane and the feeding element are both disposed on the first surface of the dielectric substrate;
• and
• a metal cavity, coupled to the first ground plane, wherein the metal cavity is adjacent to the dielectric substrate;
• wherein the narrow edge segment further comprises a plurality of first protruding portions, and the wide edge segment further comprises a plurality of second protruding portions, the first protruding portions and the second protruding portions are arranged in an interleaved manner to form a capacitive region.

An antenna structure, comprising:

• a metal cavity, comprising a metal mechanism element with a slot, wherein the metal mechanism element comprises a narrow edge segment and a wide edge segment;
• and
• a cable, comprising a feeding element and a grounding element, wherein the feeding element is coupled to the wide edge segment, and the grounding element is coupled to the narrow edge segment;
• wherein the narrow edge segment further comprises a plurality of first protruding portions, and the wide edge segment further includes a plurality of second protruding portions, the first protruding portions and the second protruding portions are arranged in an interleaved manner to form a capacitive region.