Antenna apparatus

1. An antenna apparatus, comprising:

a substrate;

two feed vias disposed in the substrate; and

an antenna pattern disposed on one surface of the substrate, and comprising a central portion and wing portions protruding from the central portion,

wherein a first wing portion and a second wing portion adjacent to the first wing portion, among the wing portions, are disposed over the two feed vias, and

wherein the antenna apparatus is configured to selectively provide a feed signal to either one or both of the two feed vias.

2. The antenna apparatus of claim 1 , wherein the wing portions are formed symmetrically with respect to the central portion.

3. The antenna apparatus of claim 1 , wherein the antenna pattern comprises slits extending to a center of the antenna pattern.

4. The antenna apparatus of claim 3 , wherein the wing portions are formed by the slits.

5. The antenna apparatus of claim 1 , wherein the first wing portion and the second wing portion are respectively connected to different feed vias among the two feed vias.

6. The antenna apparatus of claim 5 , wherein the first wing portion and the second wing portion are physically insulated from the two feed vias, and the first wing portion and the second wing portion are respectively electrically coupled to different feed vias among the two feed vias to receive the feed signal.

7. The antenna apparatus of claim 1 , wherein the first wing portion and the second wing portion are spaced apart by an angle of 90 degrees with respect to the central portion.

8. The antenna apparatus of claim 7 , wherein the antenna pattern is configured to generate an RF signal having right hand polarization characteristics in a first frequency band, and generate an RF signal having left hand polarization characteristics in a second frequency band having a higher frequency than the first frequency band, in response to the feed signal being provided to the first wing portion.

9. The antenna apparatus of claim 7 , wherein the antenna pattern is configured to generate an RF signal having left hand polarization characteristics in a first frequency band, and generate an RF signal having right hand polarization characteristics in a second frequency band having a higher frequency than the first frequency band, in response to the feed signal being provided to the second wing portion.

10. An antenna apparatus, comprising:

a substrate;

a first feed via and a second feed via, the first and second feed vias being disposed in the substrate;

an antenna pattern disposed on one surface of the substrate, comprising a central portion and wing portions protruding from the central portion, and configured to receive a first feed signal and a second feed signal from the first feed via and the second feed via, respectively,

wherein a first wing portion and a second wing portion adjacent to the first wing portion, among the wing portions, are disposed over the two feed vias, and

wherein the antenna apparatus is configured to selectively alter phases of the first feed signal and the second feed signal.

11. The antenna apparatus of claim 10 , wherein the first feed via is configured to provide the first feed signal to the first wing portion among the wing portions,

wherein the second feed via is configured to provide the second feed signal to the second wing portion among the wing portions, and

wherein the second wing portion is spaced apart from the first wing portion by an angle of −90 degrees.

12. The antenna apparatus of claim 11 , wherein the antenna pattern is configured to generate an RF signal having polarization characteristics in a first direction in which the first wing portion is extended in a first frequency band, and generate an RF signal having polarization characteristics in a second direction in which the second wing portion is extended in a second frequency band having a higher frequency than the first frequency band, in response to the first feed signal and the second feed signal, and

wherein the second feed signal is delayed from the first feed signal by 90 degrees.

13. The antenna apparatus of claim 11 , wherein the antenna pattern is configured to generate an RF signal having polarization characteristics in a second direction in which the second wing portion is extended in a first frequency band, and generate an RF signal having polarization characteristics in a first direction in which the first wing portion is extended in a second frequency band having a higher frequency than the first frequency band, in response to the first feed signal and the second feed signal, and

wherein the first feed signal is delayed from the second feed signal by 90 degrees.

14. The antenna apparatus of claim 11 , wherein the antenna pattern is configured to generate an RF signal having polarization characteristics in a +45 degree direction from a first direction in which the first wing portion is extended, in a first frequency band and in a second frequency band having a higher frequency than the first frequency band, in response to the first feed signal and the second feed signal, and

wherein phases of the first feed signal and the second feed signal differ by 180 degrees.

15. The antenna apparatus of claim 11 , wherein the antenna pattern is configured to generate an RF signal having polarization characteristics in a −45 degree direction from a first direction in which the first wing portion is extended, in a first frequency band and in a second frequency band having a higher frequency than the first frequency band, in response to the first feed signal and the second feed signal, and

wherein phases of the first feed signal and the second feed signal are in-phase.

16. The antenna apparatus of claim 10 , wherein the antenna pattern comprises slits extending to a center of the antenna pattern, and the wing portions are formed by the slits.

17. The antenna apparatus of claim 16 , wherein the slits comprise a first slit extending in a first direction and a second slit extending in a second direction perpendicular to the first direction.

18. The antenna apparatus of claim 1 , further comprising a plurality of shielding vias disposed in the substrate to surround the antenna pattern.

19. The antenna apparatus of claim 10 , further comprising a plurality of shielding vias disposed in the substrate to surround the antenna pattern.