Hybrid multi-antenna system and wireless communication apparatus using the same

1. A hybrid multi-antenna system, comprising:

a system circuit board, having at least a system ground plate located thereon, wherein the system ground plate is served as a reflector of the hybrid multi-antenna system;

an antenna substrate, wherein the antenna substrate and the system ground plate have a first distance therebetween;

at least a dipole antenna, providing a first operating band, and comprising a first signal feed-in source; and

at least a monopole-slot antenna, providing a second operating band, and comprising:

a second signal feed-in source;

a radiating conductor sheet, having a first side and a second side, wherein the second side is opposite to the first side; and

a slot, having an open-end, a first long side, and a second long side, wherein the second long side is opposite to the first long side, the open-end of the slot is located on the first or second side, a length of the slot is about 0.25 wavelength of a central frequency of the second operating band, the second signal feed-in source is disposed on the radiating conductor sheet, one end of the second signal feed-in source is electrically connected to the first long side, and the other end of the second signal feed-in source is electrically connected to the second long side;

wherein the dipole antenna and the monopole-slot antenna are located on a same surface of the antenna substrate, the monopole-slot antenna and the dipole antenna have a second distance therebetween, and the first signal feed-in source and the second signal feed-in source are perpendicular to each other, and have a phase difference of 90°.

2. The hybrid multi-antenna system according to claim 1 , wherein the first signal feed-in source has two first signal feed-in points respectively located on two opposite sides of two radiating units of the dipole antenna, and the second signal feed-in source has two second signal feed-in points respectively located on two opposite long sides of the slot of the monopole-slot antenna, wherein a connection direction of the first signal feed-in points is vertical to a connection direction of the second signal feed-in points, whereby radiating polarizations of the dipole antenna and the monopole-slot antenna in space are orthogonal to each other, such that mutual coupling effect of the dipole antenna and the monopole-slot antenna can be reduced, and a problem of poor isolation due to a small distance between the dipole antenna and the monopole-slot antenna is also solved.

3. The hybrid multi-antenna system according to claim 1 , wherein the dipole antenna comprises:

a first radiating unit and a second radiating unit, respectively extending to two opposite extension directions, wherein a summation length of the first and second radiating units is about half wavelength of a central frequency of the first operating band, one end of the first signal feed-in source is electrically connected to the first radiating unit, and the other end of the first signal feed-in source is electrically connected to the second radiating unit.

4. The hybrid multi-antenna system according to claim 1 , wherein the length of the slot is larger than a width of the open-end of the slot.

5. The hybrid multi-antenna system according to claim 1 , wherein center points of the dipole antenna and the monopole-slot antenna are substantially arranged on a same axis.

6. The hybrid multi-antenna system according to claim 1 , wherein the antenna substrate further has a symmetric center line, and the dipole antenna and the monopole-slot antenna are substantially symmetrical to the symmetric center line.

7. The hybrid multi-antenna system according to claim 1 , wherein the central frequency of the first operating band is about 5 GHz, and the central frequency of the second operating band is also about 5 GHz.

8. The hybrid multi-antenna system according to claim 1 , wherein a slot of the monopole-slot antenna is a rectangular, L-shaped, or T-shaped slot, and a first and second radiating units of the dipole antenna are two rectangular, triangular, elliptic, or hook-shaped radiating conductor sheets.

9. The hybrid multi-antenna system according to claim 1 , wherein at least the dipole antenna comprises multiple dipole antennas, at least the monopole-slot antenna comprises multiple monopole-slot antennas, the dipole antennas and the monopole-slot antennas are arranged in an interlaced fashion, and center points of the dipole antennas and the monopole-slot antennas are arranged on a same axis.

10. A wireless communication apparatus, comprising:

a transceiver chip, located on a system circuit board, electrically connected to a hybrid multi-antenna system; and

the hybrid multi-antenna system, comprising:

the system circuit board, having at least a system ground plate located thereon, wherein the system ground plate is served as a reflector of the hybrid multi-antenna system;

an antenna substrate, wherein the antenna substrate and the system ground plate have a first distance therebetween;

at least a dipole antenna, providing a first operating band, and comprising a first signal feed-in source; and

at least a monopole-slot antenna, providing a second operating band, and comprising:

a second signal feed-in source;

a radiation conductor sheet, having a first side and a second side, wherein the second side is opposite to the first side; and

a slot, having an open-end, a first long side, and a second long side, wherein the second long side is opposite to the first long side, the open-end of the slot is located on the first or second side, a length of the slot is about 0.25 wavelength of a central frequency of the second operating band, the second signal feed-in source is disposed on the radiating conductor sheet, one end of the second signal feed-in source is electrically connected to the first long side, and the other end of the second signal feed-in source is electrically connected to the second long side;

wherein the dipole antenna and the monopole-slot antenna are located on a same surface of the antenna substrate, the monopole-slot antenna and the dipole antenna have a second distance therebetween, and the first signal feed-in source and the second signal feed-in source are perpendicular to each other, and have a phase difference of 90°.

11. The wireless communication apparatus according to claim 10 , wherein the first signal feed-in source has two first signal feed-in points respectively located on two opposite sides of two radiating units of the dipole antenna, and the second signal feed-in source has two second signal feed-in points respectively located on two opposite long sides of the slot of the monopole-slot antenna, wherein a connection direction of the first signal feed-in points is vertical to a connection direction of the second signal feed-in points, whereby radiating polarizations of the dipole antenna and the monopole-slot antenna in space are orthogonal to each other, such that mutual coupling effect of the dipole antenna and the monopole-slot antenna can be reduced, and a problem of poor isolation due to a small distance between the dipole antenna and the monopole-slot antenna is also solved.

12. The wireless communication apparatus according to claim 10 , wherein the dipole antenna comprises:

a first radiating unit and a second radiating unit, respectively extending to two opposite extension directions, wherein a summation length of the first and second radiating units is about half wavelength of a central frequency of the first operating band, one end of the first signal feed-in source is electrically connected to the first radiating unit, and the other end of the first signal feed-in source is electrically connected to the second radiating unit.

13. The wireless communication apparatus according to claim 10 , wherein the length of the slot is larger than a width of the open-end of the slot.

14. The wireless communication apparatus according to claim 10 , wherein center points of the dipole antenna and the monopole-slot antenna are substantially arranged on a same axis.

15. The wireless communication apparatus according to claim 10 wherein the antenna substrate further has a symmetric center line, and the dipole antenna and the monopole-slot antenna are substantially symmetrical to the symmetric center line.

16. The wireless communication apparatus according to claim 10 , wherein the central frequency of the first operating band is about 5 GHz, and the central frequency of the second operating band is also about 5 GHz.

17. The wireless communication apparatus according to claim 10 , wherein a slot of the monopole-slot antenna is a rectangular, L-shaped, or T-shaped slot, and a first and second radiating units of the dipole antenna are two rectangular, triangular, elliptic, or hook-shaped radiating conductor sheets.

18. The wireless communication apparatus according to claim 10 , wherein at least the dipole antenna comprises multiple dipole antennas, at least the monopole-slot antenna comprises multiple monopole-slot antennas, the dipole antennas and the monopole-slot antennas are arranged in an interlaced fashion, and center points of the dipole antennas and the monopole-slot antennas are arranged on a same axis.