Antenna structure in wireless communication system
The present disclosure provides a surface-mountable antenna structure that is applicable to a broadband massive multi-input multi-output (MIMO) unit (MMU) in a wireless communication system. An antenna structure according to an embodiment of the present disclosure comprises: a printed circuit board including a first ground port, a second ground port, and a first feeding port; a first antenna electrically connected to the first ground port; a second antenna electrically connected to the second ground port; and a first feeding plate including a first bending part electromagnetically coupled to the first antenna, a second bending part electromagnetically coupled to the second antenna, and a third bending part electrically connected to the first feeding port.
1. An antenna structure, comprising:
a printed circuit board comprising a first ground port, a second ground port, and a first feeding port;
a first antenna electrically connected to the first ground port;
a second antenna electrically connected to the second ground port; and
a first feeding plate comprising:
a first bending part electromagnetically coupled to the first antenna,
a second bending part electromagnetically coupled to the second antenna, and
a third bending part electrically connected to the first feeding port,
wherein the first antenna comprises:
a radiator,
a first ground plate connected to a first side surface of the radiator,
a first ground part connected to a second side surface of the first ground plate,
a second ground plate connected to a second side surface of the radiator,
a second ground part connected to a second side surface of the second ground plate, and
a third ground plate connected to a third side surface of the second ground plate.
2. The antenna structure of claim 1 , wherein the first feeding plate further comprises a first body connected to the first bending part and the second bending part.
3. The antenna structure of claim 2 , wherein the first bending part is bent by 90 degrees in a direction of a lower surface of the first body.
4. The antenna structure of claim 2 , wherein the second bending part is bent by a predetermined angle in a direction of a lower surface of the first body.
5. The antenna structure of claim 3 ,
wherein the third bending part is connected to the second bending part, and
wherein the third bending part is bent by a predetermined angle in a direction of an upper surface of the second bending part.
6. The antenna structure of claim 1 , wherein a length of the first bending part is shorter than that of the second bending part.
7. The antenna structure of claim 1 , wherein the first ground plate is bent by a predetermined angle in a direction of the second side surface of the radiator.
8. The antenna structure of claim 7 ,
wherein the first ground part is bent by a predetermined angle in a direction of a first surface of the first ground plate, and
wherein the first ground part is electrically connected to the first ground port.
9. The antenna structure of claim 1 , wherein the second ground plate is bent by a predetermined angle in a direction of the second side surface of the radiator.
10. The antenna structure of claim 9 ,
wherein the second ground part is bent by a predetermined angle in a direction of a first surface of the second ground plate, and
wherein the second ground part is electrically connected to the first ground port.
11. The antenna structure of claim 10 , wherein the third ground plate is bent by a predetermined angle in a direction of a second surface of the first ground plate.
12. The antenna structure of claim 1 , wherein the printed circuit board further comprises a third ground port, a fourth ground port, and a second feeding port.
13. The antenna structure of claim 12 , further comprising:
a third antenna electrically connected to the third ground port;
a fourth antenna electrically connected to the fourth ground port; and
a second feeding plate comprising:
a first bending part electromagnetically coupled to the third antenna,
a second bending part electromagnetically coupled to the second antenna, and
a third bending part electrically connected to the first feeding port.
14. The antenna structure of claim 13 ,
wherein the second feeding plate is disposed at a lower end of the first feeding plate, and
wherein the second feeding plate is disposed to cross the first feeding plate in a cross shape.
15. The antenna structure of claim 1 , further comprising:
wherein a first ground plate is connected to a first side surface of the radiator, the first ground plate having a central groove at one end.
16. The antenna structure of claim 15 , further comprising:
a first ground part connected to a second side surface of the first ground plate, the first ground part having two grooves at one end.