Antenna structure and electronic device

1 . An antenna structure, comprising:

a radiating element;

a first feeding element having a first feeding portion, wherein the first feeding element is physically connected with the radiating element through the first feeding portion;

a second feeding element having a second feeding portion and connected with the radiating element through the second feeding portion;

a grounding element physically connected with the radiating element and located between the first feeding element and the second feeding element; and

a grounding branch having a first end and a second end, wherein the first end is physically connected with the second feeding portion, the second end is connected with the grounding element, and the second end is connected with a ground plane through the grounding element;

wherein the first feeding element is used for feeding a signal to excite the radiating element to generate a first radiation pattern, the second feeding element is used for feeding another signal to excite the radiating element to generate a second radiation pattern, and the first radiation pattern is different from the second radiation pattern.

2 . The antenna structure according to claim 1 , wherein the second feeding element and the radiating element form a wireless local area network (WLAN) antenna that is configured to generate a first operating frequency band and a second operating frequency band, and the first operating frequency band is lower than the second operating frequency band.

3 . The antenna structure according to claim 2 , wherein a first antenna path is formed when the WLAN antenna generates the first operating frequency band, a second antenna path is formed when the WLAN antenna generates the second operating frequency band, a path length of the first antenna path is equal to one half of a wavelength of a lowest frequency in the first operating frequency band, and a path length of the second antenna path is equal to one half of a wavelength of a lowest frequency in the second operating frequency band.

4 . The antenna structure according to claim 1 , wherein the second feeding portion and the first end of the grounding branch meet at a first connecting point, the second feeding portion and the radiating element meet at a second connecting point, the grounding element and the radiating element meet at a third connecting point, the second end of the grounding branch and the grounding element meet at a fourth connecting point, the second feeding element is separated from the first connecting point by a first length, the first connecting point is separated from the second connecting point by a second length, the second connecting point is separated from the third connection point by a third length, and the fourth connecting point is separated from one end of the grounding element that is connected with the ground plane by a fourth length; and wherein the path length of the first antenna path is a sum of the first length, the second length, the third length, and a length of the grounding element, and the path length of the second antenna path is a sum of the first length, a length of the grounding branch, and the fourth length.

5 . The antenna structure according to claim 1 , further comprising an inductive element connected between the radiating element and the grounding element.

6 . The antenna structure according to claim 5 , wherein the second feeding portion and the first end of the grounding branch meet at a first connecting point, the second feeding portion and the radiating element meet at a second connecting point, one end of the inductive element and the radiating element meet at a fifth connecting point, another end of the inductive element is physically connected with the second end of the grounding branch, the second feeding element is separated from the first connecting point by a first length, the first connecting point is separated from the second connecting point by a second length, and the second connecting point is separated from the fifth connecting point by a fifth length; and wherein the path length of the first antenna path is a sum of the first length, the second length, the fifth length, a length of inductive element, and a length of the grounding element, and the path length of the second antenna path is a sum of the first length, a length of the grounding branch, and a length of the grounding element.

7 . The antenna structure according to claim 1 , further comprising a parasitic coupling element disposed adjacent to the first feeding element, the first feeding element, the radiating element, and the parasitic coupling element form a multiband antenna, and the multiband antenna is configured to generate a frequency range that is adjustable by coupling the parasitic coupling element with the radiating element.

8 . An electronic device, comprising:

a housing; and

an antenna structure disposed in the housing, the antenna structure comprising:

a radiating element;

a first feeding element having a first feeding portion, wherein the first feeding element is physically connected with the radiating element through the first feeding portion;

a second feeding element having a second feeding portion and connected with the radiating element through the second feeding portion;

a grounding element physically connected with the radiating element and located between the first feeding element and the second feeding element; and

a grounding branch having a first end and a second end, wherein the first end is physically connected with the second feeding portion, the second end is connected with the grounding element, the second end is connected with a ground plane through the grounding element, and the ground plane is electrically connected with the housing;

wherein the first feeding element is used for feeding a signal to excite the radiating element to generate a first radiation pattern, the second feeding element is used for feeding another signal to excite the radiating element to generate a second radiation pattern, and the first radiation pattern is different from the second radiation pattern.

9 . The electronic device according to claim 8 , wherein the second feeding element and the radiating element form a wireless local area network (WLAN) antenna that is configured to generate a first operating frequency band and a second operating frequency band, and the first operating frequency band is lower than the second operating frequency band.

10 . The electronic device according to claim 9 , wherein a first antenna path is formed when the WLAN antenna generates the first operating frequency band, a second antenna path is formed when the WLAN antenna generates the second operating frequency band, a path length of the first antenna path is equal to one half of a wavelength of a lowest frequency in the first operating frequency band, and a path length of the second antenna path is equal to one half of a wavelength of a lowest frequency in the second operating frequency band.

11 . The electronic device according to claim 8 , wherein the second feeding portion and the first end of the grounding branch meet at a first connecting point, the second feeding portion and the radiating element meet at a second connecting point, the grounding element and the radiating element meet at a third connecting point, the second end of the grounding branch and the grounding element meet at a fourth connecting point, the second feeding element is separated from the first connecting point by a first length, the first connecting point is separated from the second connecting point by a second length, the second connecting point is separated from the third connecting point by a third length, and the fourth connecting point is separated from one end of the grounding element that is connected with the ground plane by a fourth length; and wherein the path length of the first antenna path is a sum of the first length, the second length, the third length, and a length of the grounding element, and the path length of the second antenna path is a sum of the first length, a length of the grounding branch, and the fourth length.

12 . The electronic device according to claim 8 , further comprising an inductive element connected between the radiating element and the grounding element.

13 . The electronic device according to claim 12 , wherein the second feeding portion and the first end of the grounding branch meet at a first connecting point, the second feeding portion and the radiating element meet at a second connecting point, one end of the inductive element and the radiating element meet at a fifth connecting point, another end of the inductive element is physically connected with the second end of the grounding branch, the second feeding element is separated from the first connecting point by a first length, the first connecting point is separated from the second connecting point by a second length, and the second connecting point is separated from the fifth connecting point by a fifth length; and wherein the path length of the first antenna path is a sum of the first length, the second length, the fifth length, a length of the inductive element, and a length of the grounding element, and the path length of the second antenna path is a sum of the first length, a length of the grounding branch, and a length of the grounding element.

14 . The electronic device according to claim 8 , further comprising a parasitic coupling element disposed adjacent to the first feeding element, the first feeding element, the radiating element, and the parasitic coupling element form a multiband antenna, and the multiband antenna is configured to generate a frequency range that is adjustable by coupling the parasitic coupling element with the radiating element.