Antenna system

Patent metadata

Field	Value
Publication number	US-10840585-B2
Application number	US-201715680371-A
Country	US
Kind code	B2
Filing date	Aug 18, 2017
Priority date	Aug 19, 2016
Publication date	Nov 17, 2020
Grant date	Nov 17, 2020

Abstract

As a non-limiting example, various aspects of this disclosure provide embodiments of antenna apparatus using monocone antennas for wireless communication.

First claim

What are claimed:

1. A communication system, comprising:
an antenna system comprising a first monocone antenna and a second monocone antenna mounted on a base structure; and
a geographical location system antenna located between the first monocone antenna and the second monocone antenna, wherein:
each of the first monocone antenna and the second monocone antenna comprises a monocone with a central axis, a conical recess, and a suspension structure;
the monocone is suspended in the conical recess by the suspension structure in each of the first monocone antenna and the second monocone antenna; and
the central axis of the first monocone antenna is at an angle in a range of substantially 70 degrees to substantially 110 degrees with respect to the central axis of the second monocone antenna.

2. The communication system according to claim 1 , wherein the conical recess is a frusto-conical recess.

3. The communication system according to claim 1 , wherein the suspension structure comprises an electrically conductive part covering either a first section of a bottom half of the conical recess or a second section of a top half of the conical recess.

4. The communication system according to claim 3 , wherein when the electrically conductive part covers the first section of the bottom half of the conical recess, the electrically conductive part is centered in the plane spanned by the central axis of the first monocone antenna and the central axis of the second monocone antenna.

5. The communication system according to claim 4 , wherein the electrically conductive part leaves at least the top half of the conical recess uncovered.

6. The communication system according to claim 3 , wherein the electrically conductive part and the conical recess are DC-connected.

7. The communication system according to claim 1 , wherein the antenna system is configured to operate in a GHz spectrum.

8. The communication system according to claim 1 , wherein the base structure is configured to be mounted onto a substantially flat metal surface.

9. The communication system according to claim 8 , wherein the base structure is configured to be mounted such that an antenna system central axis, which is substantially half way between the central axis of the first monocone antenna and the central axis of the second monocone antenna, is perpendicular to the substantially flat metal surface.

10. The communication system according to claim 8 , wherein the substantially flat metal surface is a roof of a vehicle.

11. The communication system according to claim 10 , wherein the base structure is configured to be mounted such that the antenna system exhibits polarization-diversity in a first plane orthogonal to a travel path of the vehicle and pattern-diversity in a second plane parallel to the travel path of the vehicle.

12. The communication system according to claim 11 , wherein the antenna system is configured to:
communicate with a first communication system via radiated cross-polarized signals substantially directed along the travel path of the vehicle by using the polarization-diversity in the first plane; and
communicate with a second communication system via radiated signals orthogonal to the travel path of the vehicle by using the pattern-diversity in the second plane.

13. A method for communication, comprising:
forming an antenna system by mounting:
a first monocone antenna and a second monocone antenna on a base structure; and
a geographical location system antenna between the first monocone antenna and the second monocone antenna, wherein:
each of the first monocone antenna and the second monocone antenna comprises a monocone with a central axis, a conical recess, and a suspension structure;
the monocone is suspended in the conical recess by the suspension structure in each of the first monocone antenna and the second monocone antenna; and
the central axis of the first monocone antenna is at an angle in a range of substantially 70 degrees to substantially 110 degrees with respect to the central axis of the second monocone antenna.

14. The method according to claim 13 , wherein the conical recess is a frusto-conical recess.

15. The method according to claim 13 , wherein the suspension structure comprises an electrically conductive part covering either a first section of a bottom half of the conical recess or a second section of a top half of the conical recess, and the electrically conductive part and the conical recess are DC-connected.

16. The method according to claim 13 , comprising selecting parameters for the antenna system to configure the antenna system to operate in a GHz spectrum.

17. The method according to claim 13 , comprising mounting the antenna system on a roof of a vehicle such that the antenna system exhibits polarization-diversity in a first plane orthogonal to a travel path of the vehicle and pattern-diversity in a second plane parallel to the travel path of the vehicle.

18. The method according to claim 17 , comprising communicating with one or both of:
a first communication system via radiated cross-polarized signals substantially directed along the travel path of the vehicle by using the polarization-diversity in the first plane; and
a second communication system via radiated signals orthogonal to the travel path of the vehicle by using the pattern-diversity in the second plane.

19. A vehicle comprising:
a metal roof with an antenna system mounted on the metal roof, wherein the antenna system comprises:
a base structure;
two monocone antennas mounted on the base structure, wherein:
a respective monocone of each of the two monocone antennas is suspended within a respective conical recess by a respective suspension structure, and
a first central axis of a first of the two monocones is at an angle in a range of substantially 70 degrees to substantially 110 degrees to a second central axis of the second of the two monocones; and

a geographical location system antenna mounted between the two monocone antennas.

Assignees

• Swisscom Ag

Inventors

• Jamaly Nima

Classifications

• H01Q21/24

  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 title

• H01Q9/40

  Element having extended radiating surface · CPC title

• H01Q1/3275 Primary

  mounted on a horizontal surface of the vehicle, e.g. on roof, hood, trunk · CPC title

• H01Q1/36

  Structural form of radiating elements, e.g. cone, spiral, umbrella; {Particular materials used therewith}(H01Q1/08, H01Q1/14 take precedence) · CPC title

• H01Q13/02

  Waveguide horns · CPC title