Antenna structure and electronic device

Abstract

This disclosure provides an antenna structure including a ground portion and a patch antenna. The patch antenna is opposite to the ground portion and includes a main radiating portion, a feed portion, and at least two extension portions. A first gap exists between the main radiating portion and the ground portion. The feed portion is connected to the main radiating portion. The at least two extension portions extend from the edge of the main radiating portion toward the ground portion. A second gap exists between each of the at least two extension portions and the ground portion. The first gap is greater than the second gap. Therefore, the antenna structure of this disclosure can improve bandwidth without increasing the overall thickness of the antenna.

Claims

1. An antenna structure comprising: a ground portion; and a patch antenna opposite to the ground portion, comprising: a main radiating portion having a first spacing between it and the ground portion; a feed portion connected to the main radiating portion; and at least two extension portions extending from the edge of the main radiating portion toward the ground portion, wherein each of the at least two extension portions has a second spacing between it and the ground portion; wherein, The first spacing is greater than the second spacing; wherein, the antenna structure further includes: at least one contact portion, which is separated from the main radiating portion and connected to the ground portion.

2. The antenna structure as described in claim 1, wherein the main radiating portion includes two sides facing each other, the number of the at least two extensions is two, the two extensions are respectively disposed on the two sides, and the feed portion is disposed on either of the two sides.

3. The antenna structure as described in claim 1, wherein one of the patch antennas has a bandwidth of 50 MHz.

4. The antenna structure as described in claim 1, wherein the main radiating part is a quadrilateral, the main radiating part includes four sides, and the number of the at least two extensions is four, the four extensions being respectively disposed on the four sides of the main radiating part.

5. The antenna structure as described in claim 1 further includes: at least one other contact portion disposed on at least one side of the main radiating portion and connected to the grounding portion.

6. The antenna structure as described in claim 1 further includes: at least one other contact portion, which is separated from the ground portion and connected to the main radiating portion.

7. The antenna structure as claimed in claim 6, wherein the grounding portion further comprises: at least one grounding extension that bends from the edge of the grounding portion and extends toward the patch antenna, the at least one grounding extension having a third spacing with respect to the patch antenna.

8. The antenna structure as described in claim 7, wherein one of the patch antennas has a bandwidth of 90 MHz.

9. The antenna structure as claimed in claim 1, wherein the at least two extensions have a height along a direction toward the grounding portion, the height being greater than or equal to 0.5 mm and less than or equal to 4 mm.

10. An electronic device comprising: a housing; a circuit board disposed inside the housing and having a gap between the circuit board and the housing; and an antenna structure disposed in the gap, comprising: a ground portion; and a patch antenna opposite to the ground portion, comprising: a main radiating portion having a first spacing between it and the ground portion; a feed portion connected to the main radiating portion; and at least two extensions extending from the edge of the main radiating portion toward the ground portion, wherein each of the at least two extensions has a second spacing between it and the ground portion; wherein, The first spacing is greater than the second spacing; wherein the antenna structure further includes: at least one contact portion, which is separated from the main radiating portion and connected to the ground portion.

11. The electronic device as claimed in claim 10, wherein the main radiating portion includes two sides facing each other, the number of the at least two extensions is two, the two extensions are respectively disposed on the two sides, and the feed portion is disposed on either of the two sides.

12. The electronic device as claimed in claim 10, wherein one of the patch antennas has a bandwidth of 50 MHz.

13. The electronic device as claimed in claim 10, wherein the main radiating portion is a quadrilateral, the main radiating portion includes four sides, and the number of the at least two extensions is four, the four extensions being respectively disposed on the four sides of the main radiating portion.

14. The electronic device as claimed in claim 10, wherein the antenna structure further comprises: at least one other contact portion disposed on at least one side of the main radiating portion and connected to the ground portion.

15. The electronic device as claimed in claim 10, wherein the antenna structure further includes: at least one other contact portion separated from the ground portion and connected to the main radiating portion.

16. The electronic device as claimed in claim 15, wherein the ground portion further comprises: at least one ground extension that bends from an edge of the ground portion and extends toward the patch antenna, the at least one ground extension having a third spacing between it and the patch antenna.

17. The electronic device as claimed in claim 16, wherein one of the patch antennas has a bandwidth of 90 MHz.

18. The electronic device as claimed in claim 10, wherein the at least two extensions have a height along a direction toward the grounding portion, the height being greater than or equal to 0.5 mm and less than or equal to 4 mm.

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