Antenna structure

Abstract

An antenna structure includes: a metallic component, a feed radiator, a coupling radiator, and a dielectric substrate. The metallic component has a first slot and a second slot, wherein the length of the first slot may be greater than the length of the second slot. The feed radiator is coupled to a feed point, wherein the feed radiator may extend across the first slot of the metallic component. The coupling radiator is adjacent to the second slot of the metallic component, wherein a coupling gap may be formed between the feed radiator and the coupling radiator. The dielectric substrate is disposed on the metallic component, wherein the dielectric substrate can be used to support the feed radiator and the coupling radiator.

Claims

1. An antenna structure, comprising: A metal component has a first slot and a second slot, wherein the length of the first slot is greater than the length of the second slot; A feed radiating section coupled to a feed point, wherein the feed radiating section extends across the first slot of the metal component; a coupling radiating section adjacent to the second slot of the metal component, wherein a coupling gap is formed between the feed radiating section and the coupling radiating section. And a dielectric substrate disposed on the metal structure, wherein the dielectric substrate is used to support the feed radiating part and the coupled radiating part; wherein the antenna structure covers a first frequency band, a second frequency band, a third frequency band, and a fourth frequency band; wherein the length of the coupled radiating part is between 0.3 and 0.4 times the wavelength of the first frequency band.

2. The antenna structure as claimed in claim 1, wherein the first slot of the metal component is a straight, closed slot having a first closed end and a second closed end.

3. The antenna structure as claimed in claim 2, wherein the second slot of the metal component presents another straight-line closed slot and has a third closed end and a fourth closed end.

4. The antenna structure as described in claim 3, wherein the first closed end, the second closed end, the third closed end, and the fourth closed end are all arranged on the same straight line.

5. The antenna structure as described in claim 3, wherein the distance between the second closed end of the first slot and the third closed end of the second slot is between 3 mm and 5 mm.

6. The antenna structure as described in claim 3, further comprising: A grounding element, wherein the coupled radiating portion extends across the second slot of the metal component and is coupled to the grounding element.

7. The antenna structure as described in claim 2, further comprising: A first additional radiating portion is coupled to a grounding element, wherein the first additional radiating portion is substantially aligned with the first closed end of the first slot.

8. The antenna structure as described in claim 1, further comprising: A second additional radiating portion is coupled to a connection point on the coupled radiating portion, wherein the second additional radiating portion has a vertical projection on the metal component, and the vertical projection is at least partially overlapping with the first slot.

9. The antenna structure as described in claim 1, further comprising: A third additional radiating portion is coupled to a bend in the coupled radiating portion, wherein the third additional radiating portion extends substantially along the second slot of the metal component.

10. The antenna structure as claimed in claim 6, wherein the first frequency band is between 2400MHz and 2500MHz, the second frequency band is between 5000MHz and 5600MHz, the third frequency band is between 5600MHz and 6800MHz, and the fourth frequency band is between 6800MHz and 7200MHz.

11. The antenna structure as claimed in claim 6, wherein the first frequency band, the second frequency band, and the fourth frequency band are generated by the first slot of the metal component.

12. The antenna structure as claimed in claim 6, wherein the third frequency band is generated by the second slot of the metal component.

13. The antenna structure as claimed in claim 6, wherein the length of the first slot of the metal component is approximately equal to 0.5 times the wavelength of the first frequency band.

14. The antenna structure as described in claim 6, wherein the length of the first slot of the metal component is approximately equal to one wavelength of the second frequency band.

15. The antenna structure as described in claim 6, wherein the length of the first slot of the metal component is approximately equal to 1.5 times the wavelength of the fourth frequency band.

16. The antenna structure as claimed in claim 6, wherein the length of the second slot of the metal component is approximately equal to 0.5 times the wavelength of the third frequency band.

17. The antenna structure as claimed in claim 6, wherein the distance between the feed point and the second closed end of the first slot is between 0.15 and 0.2 times the wavelength of the first frequency band.

18. The antenna structure as described in claim 1, wherein the width of the coupling gap is between 0.2 mm and 0.4 mm.

19. An antenna structure, comprising: A metal component has a first slot and a second slot, wherein the length of the first slot is greater than the length of the second slot; A feed radiating section coupled to a feed point, wherein the feed radiating section extends across the first slot of the metal component; a coupling radiating section adjacent to the second slot of the metal component, wherein a coupling gap is formed between the feed radiating section and the coupling radiating section. The antenna structure further includes: a dielectric substrate disposed on the metal component, wherein the dielectric substrate is used to support the feed radiating portion and the coupled radiating portion; wherein the first slot of the metal component is a straight strip-shaped closed slot with a first closed end and a second closed end; wherein the second slot of the metal component is another straight strip-shaped closed slot with a third closed end and a fourth closed end; and wherein the antenna structure further includes: a grounding element, wherein the coupled radiating portion extends across the second slot of the metal component and is coupled to the grounding element.

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