Methods and systems for implementing and operating multiple-input and multiple-output (MIMO) antennas

Patent metadata

Field	Value
Publication number	US-11233339-B2
Application number	US-201916578208-A
Country	US
Kind code	B2
Filing date	Sep 20, 2019
Priority date	Sep 20, 2018
Publication date	Jan 25, 2022
Grant date	Jan 25, 2022

Abstract

Methods and systems for implementing and operating antennas, particularly multiple-input and multiple-output (MIMO) antennas, for radio telecommunications.

First claim

What is claimed is:

1. An antenna comprising:
a planar dielectric substrate;
a conductive annulus on a first surface of the substrate;
a first conductive land on the first surface, wherein the first conductive land is outside the conductive annulus and wherein an edge of the first conductive land adjacent to an outward edge of a first portion of the conductive annulus is spaced from the outward edge of the first portion of the conductive annulus to provide a first slot therebetween; and
a second conductive land on the first surface wherein the second conductive land is outside the conductive annulus and wherein an edge of the second conductive land adjacent to the outward edge of a second portion of the conductive annulus is spaced from the outward edge of the second portion of the conductive annulus to provide a second slot therebetween.

2. The antenna of claim 1 , further comprising a stub on the first surface and connected to the conductive annulus.

3. The antenna of claim 2 , wherein the stub comprises at least one of: a first part connected to, and protruding radially outward from, an outward edge of the conductive annulus; and a second part connected to, and protruding radially inwards from, an inward edge of the conductive annulus.

4. The antenna of claim 1 , wherein the first conductive land comprises a first arc shaped land.

5. The antenna of claim 4 further comprising a first stem disposed on the first surface and connected to an outward edge of the conductive annulus.

6. The antenna of claim 5 , wherein at least one edge of the first stem lies adjacent to and parallel to an edge of the first conductive land.

7. The antenna of claim 6 , wherein the first conductive land comprises a first part and a second part separated from the first part by the first stem.

8. The antenna of claim 4 , wherein the second conductive land comprises a second arc shaped land.

9. The antenna of claim 5 , comprising a second stem disposed on the first surface and connected to the outward edge of the conductive annulus, wherein at least one edge of the second stem lies adjacent to and parallel to an edge of the second conductive land.

10. The antenna of claim 9 , wherein the second conductive land comprises a first part and a second part separated from the first part by the second stem.

11. The antenna of claim 9 , wherein the first stem and the second stem are separated about a circumference of the conductive annulus by an angular separation of 90°.

12. The antenna of claim 2 , wherein the stub is connected to the conductive annulus between the first portion and the second portion.

13. The antenna of claim 2 , wherein the stub comprises at least one protuberance on the surface connected to and transverse to the stub.

14. The antenna of claim 9 , wherein at least one of the first stem and the second stem comprises a tapered portion arranged so that a spacing between the stem and an adjacent conductive land gets wider towards the conductive annulus.

15. The antenna of claim 9 comprising a first signal connection connected to the first conductive land, and a second signal connection connected to the second stem, wherein the first stem is grounded and the second conductive land is grounded.

16. A transceiver apparatus comprising:
an antenna comprising:
a planar dielectric substrate;
a conductive annulus on a first surface of the substrate;
a first conductive land on the first surface, wherein the first conductive land is outside the conductive annulus and wherein an edge of the first conductive land adjacent to an outward edge of a first portion of the conductive annulus is spaced from the outward edge of the first portion of the conductive annulus to provide a first slot therebetween;
a second conductive land on the first surface wherein the second conductive land is outside the conductive annulus and wherein an edge of the second conductive land adjacent to the outward edge of a second portion of the conductive annulus is spaced from the outward edge of the second portion of the conductive annulus to provide a second slot therebetween; the transceiver apparatus further comprising a first transmit/receive apparatus connected to the first conductive land for exciting the first slot; and
a second transmit/receive apparatus connected to the conductive annulus for exciting the second slot;
wherein the first transmit/receive apparatus is configured to provide a first input/output channel, and the second transmit/receive apparatus is configured to provide second input/output channel.

17. The apparatus of claim 16 , wherein the antenna comprises a first stem disposed on the first surface and connected to the outward edge of the conductive annulus, and a second stem disposed on the first surface and connected to the outward edge of the conductive annulus, and the second transmit/receive apparatus is connected to the conductive annulus by the second stem, and the first stem is grounded.

18. A method of operating an antenna, wherein the antenna comprises a first port, and a second port; the method comprising:
providing a first input/output channel in a first frequency range at the first port using a first polarization mode of the antenna;
providing a second input/output channel in a second frequency range at the second port using a second polarization mode of the antenna; and
wherein the first polarization mode is orthogonal to the second polarization mode.

19. The method of claim 18 , wherein:
providing a first input/output channel comprises at least one of receiving and transmitting a signal in the first frequency range; and
providing a second input output channel comprises at least one of receiving and transmitting a signal in the second frequency range.

20. The method of claim 18 , wherein the antenna comprises:
a planar dielectric substrate;
a conductive annulus on a first surface of the substrate;
a first conductive land on the first surface, wherein the first conductive land is outside the conductive annulus and wherein an edge of the first conductive land adjacent to the outward edge of a first portion of the conductive annulus is spaced from the outward edge of the conductive annulus to provide the first slot therebetween; and
a second conductive land on the first surface wherein the second conductive land is outside the conductive annulus and wherein an edge of the second conductive land adjacent to the outward edge of a second portion of the conductive annulus is spaced from the outward edge of the conductive annulus to provide the second slot therebetween.

Assignees

• Swisscom Ag

Inventors

• Jamaly Nima

Classifications

• H04B7/10

  Polarisation diversity; Directional diversity · CPC title

• H01Q1/241

  used in mobile communications, e.g. GSM (H01Q1/247, H01Q1/248 take precedence) · CPC title

• H01Q1/48

  Earthing means; Earth screens; Counterpoises · CPC title

• H01Q25/04

  Multimode antennas {(corrugated horns H01Q13/0208)} · CPC title

• H01Q1/52 Primary

  Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure (absorbing means H01Q17/00) · CPC title