Antenna structure and electronic device

Abstract

This disclosure provides an antenna structure mounted on a metal component. The antenna structure includes a first slot, a second slot, and an antenna module. The antenna module includes a first radiating portion, a second radiating portion, and a lower region. The first radiating portion is disposed parallel to the first and second slots, and its orthographic projection onto the metal component overlaps with both the first and second slots. The second radiating portion is connected to a first side of the first radiating portion and extends toward the second slot. The lower region is connected to a second side of the first radiating portion opposite to the first side, and its orthographic projection onto the metal component is located at one-third to one-half of the distance from one end of the first slot away from the second slot. This allows for the provision of multiple operating frequency bands with extremely small slot sizes.

Claims

1. An antenna structure disposed on a metal part, the antenna structure comprising: a first slot formed on the metal part; a second slot formed on the metal part and disposed along an axis with the first slot, the length of the first slot being greater than the length of the second slot; and an antenna module comprising: a first radiating portion disposed parallel to the first slot and the second slot, the orthographic projection of the first radiating portion toward the metal part overlapping the first slot and the second slot; a second radiating portion, inverted L-shape, connected to a first side of the first radiating portion and adjacent to one end of the second slot, and extending toward the second slot; and a lower region connected to a second side of the first radiating portion opposite to the first side and away from the end of the second slot, the orthographic projection of the lower region toward the metal part located at one-third to one-half of the distance from the end of the first slot away from the second slot; wherein... The antenna module, the first slot, and the second slot are configured to generate a first mode, a second mode, and a third mode when a signal is fed into the antenna module, the first mode, the second mode, and the third mode corresponding to different frequency ranges.

2. The antenna structure as described in claim 1, wherein the first slot and the second slot have a slot spacing between 2 mm and 4 mm.

3. The antenna structure as described in claim 1, wherein the antenna module further comprises: an extension connected to the first radiating portion and located away from the end of the second slot, and having a length wherein the frequency range of the first mode is adjusted with the length; wherein, The length is defined by the position where the lower region is connected to the first radiating part.

4. The antenna structure as described in claim 1, wherein the antenna module further comprises: a first branch connected to the second radiating portion, the orthographic projection of the first branch toward the metal member overlapping the second slot; a feed point disposed on the first branch; and a grounding portion disposed parallel to the first slot and the second slot, and adjacent to the second side of the first radiating portion.

5. The antenna structure as described in claim 4, wherein the first radiating portion has a gap between the ground portion and the ground portion along a direction perpendicular to the axis, the gap being between 0.5 mm and 2.0 mm.

6. The antenna structure as claimed in claim 4, wherein the orthographic projection of the feed point toward the metal element is located at one-fifth to one-seventh of the distance from the end adjacent to the second slot, the feed point having a length to an edge of the first branch, and the frequency range of the second mode being adjusted with the length.

7. The antenna structure as claimed in claim 1, wherein the orthographic projection of the first radiating portion toward the metal member overlapping the portion of the second slot has a length, and the frequency range of the second mode is adjusted with respect to the length.

8. The antenna structure as claimed in claim 1, wherein there is a gap between the second radiating part and the first radiating part, the gap having a length, and the frequency range of the second mode is adjusted with the length.

9. The antenna structure as described in claim 4, wherein the antenna module further comprises: a parasitic branch, in the shape of an inverted L, connected to the end of the ground portion away from the first radiating portion, the orthographic projection of the parasitic branch toward the metal component overlapping the second slot; wherein, The portion of the parasitic branch overlapping the second slot has a length, and the frequency range of the third mode is adjusted with this length.

10. The antenna structure as claimed in claim 1, wherein the antenna module further comprises: a substrate disposed on the first slot and the second slot, and used for disposing the first radiating portion, the second radiating portion and the lower region.

11. An electronic device comprising: a metal member; and an antenna structure disposed on the metal member, comprising: a first slot formed on the metal member; a second slot formed on the metal member and disposed along an axial direction with the first slot, the length of the first slot being greater than the length of the second slot; and an antenna module comprising: a first radiating portion disposed parallel to the first slot and the second slot, the orthographic projection of the first radiating portion toward the metal member overlapping the first slot and the second slot; a second radiating portion, inverted L-shape, connected to a first side of the first radiating portion and adjacent to one end of the second slot, and extending toward the second slot; and a lower region connected to a second side of the first radiating portion opposite to the first side and away from the end of the second slot, the orthographic projection of the lower region toward the metal member located at one-third to one-half of the distance from the end of the first slot away from the second slot; wherein... The antenna module, the first slot, and the second slot are configured to generate a first mode, a second mode, and a third mode when a signal is fed into the antenna module, the first mode, the second mode, and the third mode corresponding to different frequency ranges.

12. The electronic device as claimed in claim 11, wherein the first slot and the second slot have a slot spacing between 2 mm and 4 mm.

13. The electronic device as claimed in claim 11, wherein the antenna module further comprises: an extension connected to the first radiating portion and located away from the end of the second slot, and having a length wherein the frequency range of the first mode is adjustable with respect to the length; wherein, The length is defined by the position where the lower region is connected to the first radiating part.

14. The electronic device as claimed in claim 11, wherein the antenna module further comprises: a first branch connected to the second radiating portion, the orthographic projection of the first branch toward the metal member overlapping the second slot; a feed point disposed on the first branch; and a ground portion disposed parallel to the first slot and the second slot, and adjacent to the second side of the first radiating portion.

15. The electronic device as claimed in claim 14, wherein the first radiating portion has a gap between the ground portion and the ground portion in a direction perpendicular to the axis, the gap being between 0.5 mm and 2.0 mm.

16. The electronic device as claimed in claim 14, wherein the orthographic projection of the feed point toward the metal element is located at a distance from one-fifth to one-seventh of the end adjacent to the second slot, the feed point having a length to an edge of the first branch, and the frequency range of the second mode being adjusted with respect to the length.

17. The electronic device as claimed in claim 11, wherein the orthographic projection of the first radiating portion toward the metal member overlapping the portion of the second slot has a length, and the frequency range of the second mode is adjusted with respect to the length.

18. The electronic device as claimed in claim 11, wherein a gap is provided between the second radiating portion and the first radiating portion, the gap having a length, and the frequency range of the second mode is adjusted with respect to the length.

19. The electronic device as claimed in claim 14, wherein the antenna module further comprises: a parasitic branch, in the shape of an inverted L, connected to the end of the ground portion away from the first radiating portion, the orthographic projection of the parasitic branch toward the metal component overlapping the second slot; wherein, The portion of the parasitic branch overlapping the second slot has a length, and the frequency range of the third mode is adjusted with this length.

20. The electronic device as claimed in claim 11, wherein the antenna module further comprises: a substrate disposed on the first slot and the second slot, and used for disposing the first radiating portion, the second radiating portion and the lower region.

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