Antenna structure capable of increasing its frequency bandwidth/frequency band by bending a connection element thereof
An antenna structure consists of a radiation element, a grounding element, a short element, a connection element, and a signal feeding element. The short element is coupled between the radiation element and the grounding element. The connection element is disposed between the radiation element and the grounding element. The connection element has at least a first segment and a second segment, wherein the first segment and the second segment form a bend. The signal feeding element is coupled between the connection element and the grounding element. The first segment of the connection element is substantially parallel to the grounding element and is at a designated distance from the grounding element.
1. An antenna structure, comprising:
a radiation element;
a grounding element;
a short element, disposed between the radiation element and the grounding element;
a coupling element, coupled to the short element, wherein the coupling element partially overlaps the radiation element and is at a designated distance from the radiation element in a designated direction;
a connection element, disposed between the radiation element and the grounding element, the connection element comprising at least a first segment and a second segment, wherein the first segment and the second segment form a bend; and
a signal feeding element, coupled between the connection element and the grounding element.
2. The antenna structure of claim 1 , wherein the short element is coupled to the radiation element and the grounding element.
3. The antenna structure of claim 1 , wherein the first segment of the connection element is substantially parallel to the grounding element.
4. The antenna structure of claim 3 , wherein the first segment of the connection element is at a distance of approximately 1.0˜2.5 mm from the grounding element.
5. The antenna structure of claim 1 , wherein the connection element further comprises a third segment, and the first segment, the second segment, and the third segment form a plurality of bends.
6. The antenna structure of claim 1 , wherein the short element comprises a plurality of segments, and the plurality of segments form at least one bend.
7. The antenna structure of claim 1 , wherein the radiation element, the grounding element, the short element, the connection element, and the signal feeding element are located on an identical plane.
8. The antenna structure of claim 1 , wherein at least a plurality of elements among the radiation element, the grounding element, the short element, the connection element, and the signal feeding element are located on different planes.
9. The antenna structure of claim 1 , wherein the coupling element is substantially parallel to the radiation element.
10. The antenna structure of claim 1 , wherein the grounding element comprises a first grounding sub-element and a second grounding sub-element, and the first grounding sub-element partially overlaps the second grounding sub-element and is at the designated distance from the second grounding sub-element in the designated direction; the first grounding sub-element is coupled to the signal feeding element, and the first grounding sub-element, the radiation element, as well as the signal feeding element are located on a first plane; and the second grounding sub-element is coupled to the short element, and the second grounding sub-element, the coupling element, as well as the short element are located on a second plane different from the first plane.
11. The antenna structure of claim 10 , further comprising:
a dielectric layer, having the first plane and the second plane opposite to the first plane;
a first metal layer, disposed on the first plane of the dielectric layer to form the first grounding sub-element and the radiation element; and
a second metal layer, disposed on the second plane of the dielectric layer to form the second grounding sub-element, the short element, and the coupling element.
12. An antenna structure, comprising:
a radiation element;
a grounding element;
a short element, disposed between the radiation element and the grounding element;
a coupling element, coupled to the short element, wherein the coupling element partially overlaps the radiation element and is at a designated distance from the radiation element in a designated direction;
a connection element, disposed between the radiation element and the grounding element, the connection element comprising a plurality of segments forming a lightning shape, wherein a first segment among the plurality of segments is at a distance of 1.0˜2.5 mm from the grounding element; and
a signal feeding element, coupled between the connection element and the grounding element.
13. The antenna structure of claim 12 , wherein the short element is coupled to the radiation element and the grounding element.
14. The antenna structure of claim 12 , wherein the first segment of the connection element is substantially parallel to the grounding element.
15. The antenna structure of claim 12 , wherein the short element comprises a plurality of segments, and the plurality of segments form at least one bend.
16. The antenna structure of claim 12 , wherein the radiation element, the grounding element, the short element, the connection element, and the signal feeding element are located on an identical plane.
17. The antenna structure of claim 12 , wherein at least a plurality of elements among the radiation element, the grounding element, the short element, the connection element, and the signal feeding element are located on different planes.
18. The antenna structure of claim 12 , wherein the coupling element is substantially parallel to the radiation element.
19. The antenna structure of claim 12 , wherein the grounding element comprises a first grounding sub-element and a second grounding sub-element, and the first grounding sub-element partially overlaps the second grounding sub-element and is at the designated distance from the second grounding sub-element in the designated direction; the first grounding sub-element is coupled to the signal feeding element, and the first grounding sub-element, the radiation element, as well as the signal feeding element are located on a first plane; and the second grounding sub-element is coupled to the short element, and the second grounding sub-element, the coupling element, as well as the short element are located on a second plane different from the first plane.
20. The antenna structure of claim 19 , further comprising:
a dielectric layer, having the first plane and the second plane opposite to the first plane;
a first metal layer, disposed on the first plane of the dielectric layer to form the first grounding sub-element and the radiation element; and
a second metal layer, disposed on the second plane of the dielectric layer to form the second grounding sub-element, the short element, and the coupling element.
21. An antenna structure, comprising:
a radiation element;
a first grounding sub-element;
a second grounding sub-element;
a coupling element, partially overlapping the radiation element and being at a designated distance from the radiation element in a designated direction to have electromagnetic coupling effects;
a connection element, coupled to the radiation element, the connection element comprising at least a first segment and a second segment, wherein the first segment and the second segment form a bend;
a short element, coupled between the coupling element and the second grounding sub-element; and
a signal feeding element, coupled between the connection element and the first grounding sub-element.