Antenna and communications device

• US 10,283,866 B2
• Filed: 02/27/2017
• Issued: 05/07/2019
• Est. Priority Date: 08/29/2014
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: Luo, Bing, Shi, Zhongli, Qin, Wenfei
• Primary Examiner(s): Mancuso, Huedung X
• Application Number:
  US15/443,438
• Publication Number:
  US 20170170567A1
• Time in Patent Office: 799 Days
• Field of Search: 343700 MS
• CPC Class Codes: H01Q 1/24 with receiving set
• CPC Class Codes: H01Q 1/48 Earthing means; Earth screens; Counterpoises
• CPC Class Codes: H01Q 21/24 Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction circularly polarised patch antennas H01Q9/0428; circularly polarised horns H01Q13/0241; cross-polarised horns H01Q13/0258; polarisation converters H01Q15/242; cross-polarised rear feeds H01Q19/136; crossed polarisation dual antenna H01Q25/001
• CPC Class Codes: H01Q 9/0407 Substantially flat resonant element parallel to ground plane, e.g. patch antenna dipole H01Q9/285; monopole H01Q9/40
• CPC Class Codes: H01Q 9/0457 electromagnetically coupled to the feed line

Abstract

An antenna and a communications device are presented. The antenna includes a radiating patch configured to transmit and receive a radio frequency signal; a radiating patch reference ground, disposed opposite the radiating patch; a first transmission line configured to transmit the radio frequency signal; a transmission line reference ground, disposed opposite the first transmission line; a first connection portion, connected to the first transmission line, and disposed opposite the radiating patch reference ground; and a first feed portion, including a first transmission line feed portion and two first radiation feed portions, where the two first radiation feed portions are connected to the radiating patch and are configured to receive a radio frequency signal of the radiating patch or transfer a radio frequency signal to the radiating patch; the first transmission line feed portion is connected to the first transmission line using the first connection portion.

Claims

1. An antenna, comprising:

a radiating patch configured to transmit and receive a radio frequency signal;

a radiating patch reference ground disposed opposite the radiating patch;

a first transmission line configured to transmit the radio frequency signal;

a transmission line reference ground disposed opposite the first transmission line;

a first connection portion connected to the first transmission line and disposed opposite the radiating patch reference ground; and

a first feed portion comprising a first transmission line feed portion and two first radiation feed portions, wherein the two first radiation feed portions are connected to the radiating patch and are configured to receive a radio frequency signal of the radiating patch or transfer a radio frequency signal to the radiating patch,

wherein the first transmission line feed portion is connected to the first transmission line using the first connection portion, so that the first transmission line feed portion and the first transmission line can transmit the radio frequency signal to each other,

wherein mutually coupled feeding is performed between the two first radiation feed portions and the first transmission line feed portion,

wherein the two first radiation feed portions are disposed on a plane, the first transmission line feed portion is disposed between the two first radiation feed portions, or a projection of the first transmission line feed portion on the plane is located between projections of the two first radiation feed portions on the plane, and

wherein a distance between the first connection portion and the radiating patch reference ground is greater than a distance between the first transmission line feed portion and the first radiation feed portions.

2. The antenna according to claim 1, further comprising:

a second transmission line disposed opposite the transmission line reference ground and configured to transmit the radio frequency signal;

a second connection portion disposed opposite the radiating patch reference ground and connected to the second transmission line;

a second feed portion comprising a second transmission line feed portion and two second radiation feed portions,

wherein the two second radiation feed portions are connected to the radiating patch and are configured to receive a radio frequency signal of the radiating patch or transfer a radio frequency signal to the radiating patch,

wherein the second transmission line feed portion is connected to the second transmission line using the second connection portion, so that the second transmission line feed portion and the second transmission line can transmit the radio frequency signal to each other; and

wherein mutually coupled feeding is performed between the two second radiation feed portions and the second transmission line feed portion,

wherein the two second radiation feed portions are disposed on the plane, the second transmission line feed portion is disposed between the two second radiation feed portions, or a projection of the second transmission line feed portion on the plane is located between projections of the two second radiation feed portions on the plane,

wherein a distance between the second connection portion and the radiating patch reference ground is greater than a distance between the second transmission line feed portion and the second radiation feed portions, and

wherein polarization directions of radiated electromagnetic waves excited by the second feed portion and the first feed portion are perpendicular to each other, or a phase difference of the radiated electromagnetic waves is 180 degrees.

3. The antenna according to claim 2, wherein the two first radiation feed portions are symmetric with respect to a first straight line, wherein the first transmission line feed portion itself is symmetric with respect to the first straight line, wherein the two second radiation feed portions are symmetric with respect to a second straight line, wherein the second transmission line feed portion itself is symmetric with respect to the second straight line, and wherein the first straight line and the second straight line are perpendicular or overlapped.

4. The antenna according to claim 2, further comprising a top plate, wherein the top plate comprises a lower surface and an upper surface opposite to the lower surface,

wherein the radiating patch is disposed on the upper surface or the lower surface,

wherein the first transmission line, the second transmission line, the first connection portion, and the second connection portion are disposed on one surface of the upper surface and the lower surface,

wherein the transmission line reference ground is disposed on the other surface of the upper surface and the lower surface, and

wherein the two first radiation feed portions, the first transmission line feed portion, the two second radiation feed portions, and the second transmission line feed portion are disposed on the upper surface or the lower surface.

5. The antenna according to claim 2, further comprising a top plate and a bottom plate disposed opposite the top plate, wherein the bottom plate comprises an upper surface opposite the top plate and a lower surface opposite to the upper surface,

wherein the radiating patch, the two first radiation feed portions, the two second radiation feed portions, the first transmission line feed portion,

wherein the second transmission line feed portion are disposed on the top plate,

wherein the radiating patch reference ground is disposed on the bottom plate, and a projection of the radiating patch on the radiating patch reference ground is on the radiating patch reference ground,

wherein the first transmission line and the second transmission line are disposed on one surface of the upper surface and the lower surface,

wherein the transmission line reference ground is disposed on the other surface of the upper surface and the lower surface,

wherein projections of the first transmission line and the second transmission line on the transmission line reference ground on the surface are located on a projection of the transmission line reference ground on the surface, and

wherein the first connection portion and the second connection portion are located between the top plate and the bottom plate.

6. The antenna according to claim 2, further comprising:

a third transmission line and a fourth transmission line disposed opposite the transmission line reference ground and configured to transmit the radio frequency signal;

a third connection portion and a fourth connection portion disposed opposite the radiating patch reference ground, wherein the third connection portion is connected to the third transmission line, and wherein the fourth connection portion is connected to the fourth transmission line;

a third feed portion comprising a third transmission line feed portion and two third radiation feed portions, wherein the two third radiation feed portions are connected to the radiating patch and are configured to receive a radio frequency signal of the radiating patch or transfer a radio frequency signal to the radiating patch, wherein the third transmission line feed portion is connected to the third transmission line using the third connection portion, so that the third transmission line feed portion and the third transmission line can transmit the radio frequency signal to each other, wherein mutually coupled feeding is performed between the two third radiation feed portions and the third transmission line feed portion, wherein the two third radiation feed portions are disposed on the plane, the third transmission line feed portion is disposed between the two third radiation feed portions, or a projection of the third transmission line feed portion on the plane is located between projections of the two third radiation feed portions on the plane, and wherein a distance between the third connection portion and the radiating patch reference ground is greater than a distance between the third transmission line feed portion and the third radiation feed portions; and

a fourth feed portion, comprising a fourth transmission line feed portion and two fourth radiation feed portions, wherein the two fourth radiation feed portions are connected to the radiating patch and are configured to receive a radio frequency signal of the radiating patch or transfer a radio frequency signal to the radiating patch, wherein the fourth transmission line feed portion is connected to the fourth transmission line using the fourth connection portion, so that the fourth transmission line feed portion and the fourth transmission line can transmit the radio frequency signal to each other, wherein mutually coupled feeding is performed between the two fourth radiation feed portions and the fourth transmission line feed portion, wherein the two fourth radiation feed portions are disposed on the plane, the fourth transmission line feed portion is disposed between the two fourth radiation feed portions, or a projection of the fourth transmission line feed portion on the plane is located between projections of the two fourth radiation feed portions on the plane, and wherein a distance between the fourth connection portion and the radiating patch reference ground is greater than a distance between the fourth transmission line feed portion and the fourth radiation feed portions,

wherein the radiating patch is located in an area enclosed by the first connection portion, and wherein the second connection portion, the third connection portion, and the fourth connection portion, and polarization directions of radiated electromagnetic waves excited by any two feed portions of the first feed portion, the second feed portion, the third feed portion, and the fourth feed portion are perpendicular to each other, or a phase difference of the radiated electromagnetic waves is 180 degrees.

7. The antenna according to claim 6, wherein the two first radiation feed portions are symmetric with respect to a first straight line, and the first transmission line feed portion itself is symmetric with respect to the first straight line, wherein the two second radiation feed portions are symmetric with respect to a second straight line, the second transmission line feed portion itself is symmetric with respect to the second straight line, and the first straight line and the second straight line are perpendicular, wherein the two third radiation feed portions are symmetric with respect to the first straight line, and the third transmission line feed portion itself is symmetric with respect to the first straight line, and wherein the two fourth radiation feed portions are symmetric with respect to the second straight line, the fourth transmission line feed portion itself is symmetric with respect to the second straight line, and the first straight line and the second straight line are perpendicular or overlapped.

8. The antenna according to claim 6, further comprising a top plate, wherein the top plate comprises a lower surface and an upper surface opposite to the lower surface, wherein the radiating patch is disposed on the upper surface or the lower surface,

wherein the first transmission line, the second transmission line, the third transmission line, the first connection portion, the second connection portion, and the third connection portion are disposed on one surface of the upper surface and the lower surface, and the transmission line reference ground is disposed on the other surface of the upper surface and the lower surface, and

wherein the two first radiation feed portions, the first transmission line feed portion, the two second radiation feed portions, the second transmission line feed portion, the two third radiation feed portions, and the third transmission line feed portion are disposed on the upper surface or the lower surface.

9. The antenna according to claim 6, further comprising a top plate and a bottom plate disposed opposite the top plate, wherein the bottom plate comprises an upper surface opposite the top plate and a lower surface opposite to the upper surface,

wherein the radiating patch, the two first radiation feed portions, the two second radiation feed portions, the two third radiation feed portions, the first transmission line feed portion, the second transmission line feed portion, and the third transmission line feed portion are disposed on the top plate,

wherein the radiating patch reference ground is disposed on the bottom plate, and a projection of the radiating patch on the radiating patch reference ground is on the radiating patch reference ground,

wherein the first transmission line, the second transmission line, and the third transmission line are disposed on one surface of the upper surface and the lower surface, the transmission line reference ground is disposed on the other surface of the upper surface and the lower surface, and projections of the first transmission line, the second transmission line, and the third transmission line on the transmission line reference ground on the surface are located on a projection of the transmission line reference ground on the surface, and

wherein the first connection portion, the second connection portion, and the third connection portion are located between the top plate and the bottom plate.

10. The antenna according to claim 1, wherein the two first radiation feed portions are symmetric with respect to a straight line, and wherein the first transmission line feed portion itself is symmetric with respect to the straight line.

11. The antenna according to claim 1, further comprising a top plate, wherein the top plate comprises a lower surface and an upper surface opposite to the lower surface, wherein the radiating patch is disposed on the upper surface or the lower surface,

wherein the first transmission line and the first connection portion are disposed on one surface of the upper surface and the lower surface, and the transmission line reference ground is disposed on the other surface of the upper surface and the lower surface, and

wherein the two first radiation feed portions and the first transmission line feed portion are disposed on the upper surface or the lower surface.

12. The antenna according to claim 4, further comprising two radiating patches, separately disposed on the upper surface and the lower surface.

13. The antenna according to claim 8, further comprising two radiating patches, separately disposed on the upper surface and the lower surface.

14. The antenna according to claim 11, further comprising two radiating patches, separately disposed on the upper surface and the lower surface.

15. The antenna according to claim 4, further comprising a bottom plate disposed opposite the radiating patch, a surface, of the bottom plate, opposite the radiating patch is partially concave to form a groove, wherein the radiating patch reference ground is disposed at a bottom of the groove.

16. The antenna according to claim 8, further comprising a bottom plate disposed opposite the radiating patch, a surface, of the bottom plate, opposite the radiating patch is partially concave to form a groove, wherein the radiating patch reference ground is disposed at a bottom of the groove.

17. The antenna according to claim 11, further comprising a bottom plate disposed opposite the radiating patch, a surface, of the bottom plate, opposite the radiating patch is partially concave to form a groove, wherein the radiating patch reference ground is disposed at a bottom of the groove.

18. The antenna according to claim 12, further comprising a bottom plate disposed opposite the radiating patch, a surface, of the bottom plate, opposite the radiating patch is partially concave to form a groove, and the radiating patch reference ground is disposed at a bottom of the groove.

19. The antenna according to claim 1, further comprising a top plate and a bottom plate disposed opposite the top plate, wherein the bottom plate comprises an upper surface opposite the top plate and a lower surface opposite to the upper surface,

wherein the radiating patch, the two first radiation feed portions, and the first transmission line feed portion are disposed on the top plate,

wherein the radiating patch reference ground is disposed on the bottom plate, and a projection of the radiating patch on the radiating patch reference ground is on the radiating patch reference ground,

wherein the first transmission line is disposed on one surface of the upper surface and the lower surface, the transmission line reference ground is disposed on the other surface of the upper surface and the lower surface, and a projection of the first transmission line on the transmission line reference ground on the surface is located on a projection of the transmission line reference ground on the surface, and

wherein the first connection portion is located between the top plate and the bottom plate.

20. A communications device, comprising:

an antenna, comprising;

a radiating patch configured to transmit and receive a radio frequency signal;

a radiating patch reference ground disposed opposite the radiating patch;

a first transmission line configured to transmit the radio frequency signal;

a transmission line reference ground disposed opposite the first transmission line;

a first connection portion connected to the first transmission line and disposed opposite the radiating patch reference ground; and

a first feed portion comprising a first transmission line feed portion and two first radiation feed portions, wherein the two first radiation feed portions are connected to the radiating patch and are configured to receive a radio frequency signal of the radiating patch or transfer a radio frequency signal to the radiating patch; and

a transceiver configured to receive a signal from the antenna or send a signal to the antenna.

wherein the first transmission line feed portion is connected to the first transmission line using the first connection portion, so that the first transmission line feed portion and the first transmission line can transmit the radio frequency signal to each other,

wherein mutually coupled feeding is performed between the two first radiation feed portions and the first transmission line feed portion,

wherein the two first radiation feed portions are disposed on a plane, the first transmission line feed portion is disposed between the two first radiation feed portions, or a projection of the first transmission line feed portion on the plane is located between projections of the two first radiation feed portions on the plane, and

wherein a distance between the first connection portion and the radiating patch reference ground is greater than a distance between the first transmission line feed portion and the first radiation feed portions.