High gain and large bandwidth antenna incorporating a built-in differential feeding scheme

Patent metadata

Field	Value
Publication number	US-11552397-B2
Application number	US-202117444986-A
Country	US
Kind code	B2
Filing date	Aug 12, 2021
Priority date	Aug 29, 2018
Publication date	Jan 10, 2023
Grant date	Jan 10, 2023

Abstract

An antenna and a base station including the antenna. The antenna includes a sub-array that includes first and second unit cells and a feed network. The first and second unit cells comprise first and second patches, respectively, having quadrilateral shapes. The feed network comprises a first transmission line terminating below first corners of the first and second patches, respectively; a second transmission line terminating below third corners of the first and second patches, respectively; a third transmission line terminating below a second corner of the first patch and a fourth corner of the second patch; and a fourth transmission line terminating below a fourth corner of the first patch and a second corner of the second patch. The first corners are opposite the third corners on the respective first and second patches and the second corners are opposite the fourth corners on the respective first and second patches.

First claim

What is claimed is:

1. A base station comprising:
an antenna array; and
a radio frequency (RF) transceiver configured to transmit RF signals via the antenna array,
wherein the antenna array comprises a sub-array, wherein the sub-array comprises:
a first transmission line;
a second transmission line;
a first antenna element that includes four horizontal feeds;
a second antenna element that includes four horizontal feeds;
four vertical feeds corresponding to the first antenna element; and
four vertical feeds corresponding to the second antenna element,

wherein the first transmission line feeds two of the four vertical feeds that correspond to two of the four horizontal feeds of the first antenna element and the second transmission line feeds the other two of the four vertical feeds that correspond to the other two of the four horizontal feeds of the first antenna element,
wherein the first transmission line feeds two of the four vertical feeds that correspond to two of the four horizontal feeds of the second antenna element and the second transmission line feeds the other two of the four vertical feeds that correspond to the other two of the four horizontal feeds of the second antenna element.

2. The base station of claim 1 , wherein the antenna array further includes decoupling elements for the first and second antenna elements, the decoupling elements configured to modify a cross-polarization rejection ratio.

3. The base station of claim 1 , wherein the first transmission line includes phase-shifting portions.

4. The base station of claim 1 , wherein the second transmission line includes hybrid couplers.

5. The base station of claim 4 , wherein the hybrid couplers are built-in 180 degree hybrid couplers of the second transmission line.

6. The base station of claim 1 , wherein:
the first transmission line is coupled to a first excitation port, and
the second transmission line is coupled to a second excitation port.

7. The base station of claim 6 , wherein the RF transceiver is configured to introduce power to the sub-array by at least one of the first excitation port or the second excitation port for transmitting the RF signals.

8. The base station of claim 7 , wherein the first antenna element and the second antenna element are configured to provide more than one polarization.

9. The base station of claim 1 , wherein the antenna array is an orthogonally polarized antenna.

10. The base station of claim 1 , wherein the antenna array is a Massive Multiple Input Multiple Output (MIMO) antenna system.

11. An antenna array, comprising:
a sub-array comprising:
a first transmission line;
a second transmission line;
a first antenna element that includes four horizontal feeds;
a second antenna element that includes four horizontal feeds;
four vertical feeds corresponding to the first antenna element; and
four vertical feeds corresponding to the second antenna element,

wherein the first transmission line feeds two of the four vertical feeds that correspond to two of the four horizontal feeds of the first antenna element and the second transmission line feeds the other two of the four vertical feeds that correspond to the other two of the four horizontal feeds of the first antenna element,
wherein the first transmission line feeds two of the four vertical feeds that correspond to two of the four horizontal feeds of the second antenna element and the second transmission line feeds the other two of the four vertical feeds that correspond to the other two of the four horizontal feeds of the second antenna element.

12. The antenna array of claim 11 , wherein the antenna array further includes decoupling elements for the first and second antenna elements, the decoupling elements configured to modify a cross-polarization rejection ratio.

13. The antenna array of claim 11 , wherein the first transmission line includes phase-shifting portions.

14. The antenna array of claim 11 , wherein the second transmission line includes hybrid couplers.

15. The antenna array of claim 14 , wherein the hybrid couplers are built-in 180 degree hybrid couplers of the second transmission line.

16. The antenna array of claim 11 , wherein:
the first transmission line is coupled to a first excitation port, and
the second transmission line is coupled to a second excitation port.

17. The antenna array of claim 16 , wherein the sub-array is configured to receive power via at least one of the first excitation port or the second excitation port for transmitting radio frequency (RF) signals.

18. The antenna array of claim 17 , wherein the first antenna element and the second antenna element are configured to provide more than one polarization.

19. The antenna array of claim 11 , wherein the antenna array is an orthogonally polarized antenna.

20. The antenna array of claim 11 , wherein the antenna array is a massive multiple input multiple output (MIMO) antenna system.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Tehran Hamid Reza Memar Zadeh
• Xu Gary
• Choi Won Suk
• Zhang Jianzhong

Classifications

• H01Q9/045

  with particular feeding means (for circular polarisation H01Q9/0428) · CPC title

• H01Q1/523

  between antennas of an array · CPC title

• H01Q21/24 Primary

  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 title

• H01Q1/246

  specially adapted for base stations · CPC title

• H01Q9/0407 Primary

  Substantially flat resonant element parallel to ground plane, e.g. patch antenna (dipole H01Q9/285; monopole H01Q9/40) · CPC title