HIGHLY ISOLATED MONOPOLE ANTENNA SYSTEM

• US 20180090844A1
• Filed: 09/23/2016
• Published: 03/29/2018
• Est. Priority Date: 09/23/2016
• Status: Active Grant

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Suh, Seong-Youp John, Yang, Tae Young, Camcho Perez, Jose R.
• Granted Patent: US 10,148,014 B2
• Time in Patent Office: Days
• CPC Class Codes: H01Q 1/241 used in mobile communications, e.g. GSM H01Q1/247, H01Q1/248 take precedence
• CPC Class Codes: H01Q 1/243 with built-in antennas
• CPC Class Codes: H01Q 1/36 Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewithH01Q1/08, H01Q1/14 take precedence
• CPC Class Codes: H01Q 1/48 Earthing means; Earth screens; Counterpoises
• CPC Class Codes: H01Q 1/525 between emitting and receiving antennas
• CPC Class Codes: H01Q 13/10 Resonant slot antennas
• CPC Class Codes: H01Q 9/26 with folded element or elements, the folded parts being spaced apart a small fraction of operating wavelength resonant loop antennas H01Q7/00
• CPC Class Codes: H01Q 9/42 with folded element, the folded parts being spaced apart a small fraction of the operating wavelength

Abstract

Described herein are technologies that facilitate wireless communication with highly-isolated, dual-port antenna system. More particularly, an example antenna system that implements the technology includes a complementary pair of physically co-located antennas for signal transmission and/or reception. More particularly still, an example implementation of the disclosed technology is an antenna system that utilizes a monopole antenna symmetrically and physically co-located with a slot antenna in a shared antenna plane with a simple feed structure.

Claims

1. An antenna system of a mobile-communications device comprising:

a linearly polarized monopole antenna operatively coupled to a wireless signal subsystem;

a linearly polarized slot antenna operatively coupled to the wireless signal subsystem,

wherein both antennas are co-planar and bilateral symmetrically co-located.

2. A system as recited in claim 1 further comprising a common ground plane that is shared by the monopole antenna and the slot antenna.

3. A system as recited in claim 1 further comprising a common ground plane that is shared by the monopole antenna and the slot antenna, wherein the common ground plane is co-planar with both the monopole antenna and the slot antenna.

4. A system as recited in claim 1, further comprising:

a planar conductive element being disposed orthogonally to both the monopole antenna and the slot antenna.

5. A system as recited in claim 1, further comprising a planar conductive element being disposed orthogonally to both the monopole antenna and the slot antenna, wherein the planar conductive element to form an opening below and in symmetrically disposed under a slot of the slot antenna.

6. A system as recited in claim 1, wherein the monopole antenna has a T-shape.

7. A system as recited in claim 1, wherein the monopole antenna has a folded T-shape.

8. A system as recited in claim 1, wherein the monopole antenna has a T-shape with a symmetrical closed-figure structure therein.

9. A system as recited in claim 1, wherein the monopole antenna has an oval T-shape, wherein the oval T-shape has a symmetrical oval structure therein.

10. A system as recited in claim 1, wherein the monopole antenna has an T-shape with a bilaterally symmetrical arm projecting from a plane shared by the antennas.

11. A system as recited in claim 1, wherein the monopole antenna has an T-shape with a bilaterally symmetrical closed-figure shape projecting from a plane shared by the antennas.

12. A system as recited in claim 1, wherein the slot antenna is a half-slot antenna.

13. A system as recited in claim 1 further comprising a feed structure that includes a pair of feed lines being connected to a common ground shared by the monopole and slot antennas, each feed line of the feed structure operationally couples one of the antennas to the wireless signal subsystem.

14. A system as recited in claim 1 further comprising:

a feed structure that includes a pair of feed lines being connected to a common ground shared by the monopole and slot antennas, each feed line of the feed structure operationally couples one of the antennas to the wireless signal subsystem;

a complementary symmetric replica structure that includes a pair of dummy lines being connected to the common ground, each dummy line of the complementary symmetric replica structure is disposed in a fashion that mirrors the feed structure, the dummy lines provide no operational coupling between the antennas and the wireless signal subsystem.

15. A system as recited in claim 1 further comprising a planar conductive element that is disposed below and orthogonal to a plane of the coplanar antennas, the planar conductive element operatively coupled to the monopole antenna to provide a reduction of null in a radiation pattern of the antennas along a direction of the plane of the coplanar antennas.

16. A system as recited in claim 1, wherein, when the mobile-communications device is operating, the monopole antenna and the slot antenna exhibit an isolation of at least about 60 dB.

17. A system as recited in claim 1, wherein the monopole antenna and the slot antenna are configured to radiate with linear polarization substantially orthogonal to one another when the mobile-communications device is operating.

18. A system as recited in claim 1, wherein each of the monopole antenna and the slot antenna is configured to radiate in a uni-directional pattern when the mobile-communications device is operating.

19. An antenna system comprising:

a monopole antenna operatively coupled to a wireless signal subsystem; and

a slot antenna operatively coupled to the wireless signal subsystem,

wherein both antennas are co-planar and bilateral symmetrically co-located.

20. A system as recited in claim 19, wherein the monopole antenna is linearly polarized and the slot antenna is linearly polarized.

21. A system as recited in claim 19, wherein the monopole antenna is linearly polarized and the slot antenna is linearly polarized, wherein the linear polarization of each antenna is substantially orthogonal to the other antenna.

22. A system as recited in claim 19, wherein the monopole antenna is linearly polarized and the slot antenna is linearly polarized, wherein the linear polarization of each antenna is nearly truly orthogonal to the other antenna.

23. A system as recited in claim 19 further comprising a common ground plane that is shared by the monopole antenna and the slot antenna.

24. A system as recited in claim 19 further comprising a common ground plane that is shared by the monopole antenna and the slot antenna, wherein the common ground plane is co-planar with both the monopole antenna and the slot antenna.

25. A system as recited in claim 19, wherein the monopole antenna has a T-shape.

26. A system as recited in claim 19, wherein the monopole antenna has a folded T-shape.

27. A system as recited in claim 19, wherein the monopole antenna has a T-shape with a symmetrical closed-figure structure therein.

28. A system as recited in claim 19, wherein the monopole antenna has an oval T-shape, wherein the oval T-shape has a symmetrical oval structure therein.

29. A system as recited in claim 19, wherein the monopole antenna has an T-shape with a bilaterally symmetrical arm projecting from a plane shared by the antennas.

30. A system as recited in claim 19, wherein the monopole antenna has an T-shape with a bilaterally symmetrical closed-figure shape projecting from a plane shared by the antennas.

31. A system as recited in claim 19 further comprising a feed structure that includes a pair of feed lines being connected to the common ground, each feed line of the feed structure operationally couples one of the antennas to the wireless signal subsystem.

32. A system as recited in claim 19 further comprising:

a feed structure that includes a pair of feed lines being connected to the common ground, each feed line of the feed structure operationally couples one of the antennas to the wireless signal subsystem;

a complementary symmetric replica structure that includes a pair of dummy lines being connected to the common ground, each dummy line of the complementary symmetric replica structure is disposed in a fashion that mirrors the feed structure, the dummy lines provide no operational coupling between the antennas and the wireless signal subsystem.

33. A system as recited in claim 19 further comprising a planar conductive element that is disposed below and orthogonal to a plane of the coplanar antennas, the planar conductive element operatively coupled to the monopole antenna to provide a reduction of null in a radiation pattern of the antennas along a direction of the plane of the coplanar antennas.

34. A system as recited in claim 19, wherein, when the mobile-communications device is operating, the monopole antenna and the slot antenna exhibit an isolation of at least about 60 dB.

35. A system as recited in claim 19, wherein the monopole antenna and the slot antenna are configured to radiate with linear polarization substantially orthogonal to one another when the mobile-communications device is operating.

36. A system as recited in claim 19, wherein each of the monopole antenna and the slot antenna is configured to radiate in a uni-directional pattern when the mobile-communications device is operating.

37. A mobile-communications device comprising:

a monopole antenna operatively coupled to a wireless signal subsystem;

a slot antenna operatively coupled to the wireless signal subsystem;

a common ground plane that is shared by the monopole antenna and the slot antenna, wherein the common ground plane is co-planar with both the monopole antenna and the slot antenna,

wherein both antennas are co-planar and bilateral symmetrically co-located.

38. A device as recited in claim 37, wherein the monopole antenna is linearly polarized and the slot antenna is linearly polarized.

39. A device as recited in claim 37, wherein the monopole antenna is linearly polarized and the slot antenna is linearly polarized, wherein the linear polarization of each antenna is substantially orthogonal to the other.

40. A device as recited in claim 37, wherein the monopole antenna is linearly polarized and the slot antenna is linearly polarized, wherein the linear polarization of each antenna is nearly truly orthogonal to the other.

41. A device as recited in claim 37, wherein the monopole antenna has a T-shape.

42. A device as recited in claim 37, wherein the monopole antenna has a folded T-shape.

43. A device as recited in claim 37, wherein the monopole antenna has a T-shape with a symmetrical closed-figure structure therein.

44. A device as recited in claim 37, wherein the monopole antenna has an oval T-shape, wherein the oval T-shape has a symmetrical oval structure therein.

45. A device as recited in claim 37, wherein the monopole antenna has an T-shape with a bilaterally symmetrical arm projecting from a plane shared by the antennas.

46. A device as recited in claim 37, wherein the monopole antenna has an T-shape with a bilaterally symmetrical closed-figure shape projecting from a plane shared by the antennas.

47. A device as recited in claim 37 further comprising a feed structure that includes a pair of feed lines being connected to the common ground, each feed line of the feed structure operationally couples one of the antennas to the wireless signal subsystem.

48. A device as recited in claim 37 further comprising:

a feed structure that includes a pair of feed lines being connected to the common ground, each feed line of the feed structure operationally couples one of the antennas to the wireless signal subsystem;

a complementary symmetric replica structure that includes a pair of dummy lines being connected to the common ground, each dummy line of the complementary symmetric replica structure is disposed in a fashion that mirrors the feed structure, the dummy lines provide no operational coupling between the antennas and the wireless signal subsystem.

49. A device as recited in claim 37 further comprising a planar conductive element that is disposed below and orthogonal to a plane of the coplanar antennas, the planar conductive element operatively coupled to the monopole antenna to provide a reduction of null in a radiation pattern of the antennas along a direction of the plane of the coplanar antennas.

50. A device as recited in claim 37, wherein, when the mobile-communications device is operating, the monopole antenna and the slot antenna exhibit an isolation of at least about 60 dB.

51. A device as recited in claim 37, wherein the monopole antenna and the slot antenna are configured to radiate with linear polarization substantially orthogonal to one another when the mobile-communications device is operating.

52. A device as recited in claim 37, wherein each of the monopole antenna and the slot antenna is configured to radiate in a uni-directional pattern when the mobile-communications device is operating.