VAULT ANTENNA FOR WLAN OR CELLULAR APPLICATION

• US 20130120199A1
• Filed: 09/11/2012
• Published: 05/16/2013
• Est. Priority Date: 08/28/2009
• Status: Abandoned Application

• Current Assignee: BelAir Networks (Telefonaktiebolaget LM Ericsson)
• Original Assignee: Ericsson Canada
• Inventors: FRANK, PETER, SMITH, ROLAND A., PELL, DAVE, RAYMENT, STEPHEN, BRAZEAU, ALAIN J., LE, TRIET
• Application Number:
  US13/609,971
• Publication Number:
  US 20130120199A1
• Time in Patent Office: Days
• US Class Current: 343/719
• CPC Class Codes: H01Q 1/04 Adaptation for subterranean or subaqueous use
• CPC Class Codes: H01Q 1/2233 used in consumption-meter devices, e.g. electricity, gas or water meters
• CPC Class Codes: H01Q 15/14 Reflecting surfaces; Equivalent structures electromagnetic shields H01Q1/526
• CPC Class Codes: H01Q 15/16 curved in two dimensions, e.g. paraboloidal
• CPC Class Codes: H01Q 19/10 using reflecting surfaces
• CPC Class Codes: H01Q 19/106 using two or more intersecting plane surfaces, e.g. corner reflector antennas

Abstract

A fringe-effect antenna module includes coupling structure configured to couple the module to a communications vault that is disposed substantially at ground level. A support structure (which preferably includes an electronics unit) is coupled to the coupling structure, and at least one antenna element is coupled to the support structure. A metallic deflector is coupled to at least one of (i) the coupling structure and (ii) the support structure. The metallic deflector has an edge that is positioned substantially parallel to the ground so as to cause a fringe effect upon the RF signals of the antenna to cause those RF signals to bend in a direction toward the ground.

Claims

1. A fringe-effect antenna module, comprising:

coupling structure configured to couple the module to a communications vault disposed substantially at ground level;

a support structure coupled to the coupling structure;

at least one antenna element coupled to the support structure; and

a metallic deflector coupled to at least one of (i) the coupling structure and (ii) the support structure, the metallic deflector having an edge, the edge being positioned substantially parallel to the ground, the metallic deflector and the edge being configured to cause a fringe effect upon the RF signals of the antenna to cause said RF signals to bend in a direction toward the ground.

2. The fringe-effect antenna module of claim 1, wherein the at least one antenna element is configured to be disposed below ground level.

3. The fringe-effect antenna module of claim 1, further comprising a radome disposed above the at least one antenna element.

4. The fringe-effect antenna module of claim 1, wherein the metallic deflector comprises an upside-down, frusto-rectangular shape having four sloped sides.

5. The fringe-effect antenna module of claim 1, wherein the support structure includes electronic circuitry having transmission, reception, processing, memory, and power supply functionality.

6. The fringe-effect antenna module of claim 5, wherein the support structure includes at least one cable connector.

7. The fringe-effect antenna module of claim 1, wherein the at least one antenna element is selected from the group consisting of an omni-directional antenna, a directional antenna, a parabolic antenna, and a corner reflecting antenna.

13. A system for providing WLAN or cellular radio coverage from a substantially ground-level vault, the system comprising:

the fringe-effect antenna module of claim 1;

the vault, coupled to said fringe-effect antenna module; and

at least one wire coupled to said fringe-effect antenna module.

14. The system of claim 13, wherein the at least one wire is configured to carry signals selected from the group consisting of DOCSIS, DSL, ADSL, HDSL, VDSL, EPON, GPON, Optical Ethernet, T1, and E1.

15. The system of claim 13, wherein the at least one antenna element is configured to enable wide-band, multi-carrier operation.

16. The system of claim 13, wherein the support structure includes a plurality of wireless transceivers, and further comprising a plurality of antenna elements, each of the plurality of antenna elements corresponding to a different one of the plurality of wireless transceivers.

8. A vault antenna module, comprising:

a support structure including electronic circuitry;

coupling structure coupled to the support structure and configured to couple to a substantially ground-level vault;

an antenna element coupled to the support structure;

a deflector plate having at least one edge configured to bend RF signals to/from said antenna element in a direction substantially along the ground; and

a cable connector coupled to the support structure.

9. A vault antenna module according to claim 8, wherein the coupling structure is configured to be coupled to at least two inside walls of the vault.

10. A vault antenna module according to claim 8, wherein the antenna is disposed substantially orthogonal to an upper surface of the support structure.

11. A vault antenna module according to claim 8, further comprising a bell jar covering disposed over the support structure.

12. A vault antenna module according to claim 11, further comprising a radome disposed below the bell jar covering and above the support structure.

17. Fringe-effect RF antenna structure, comprising:

mounting structure configured to be coupled to an inside of a substantially ground-level vault;

support structure coupled to the mounting structure;

an antenna element coupled to the support structure;

a deflector coupled to said mounting structure and having a sloped portion configured to intersect a main beam of said antenna element; and

an edge coupled to a top portion of the deflector and positioned to have a fringe-effect on the RF signal of said antenna element to bend the RF signal in a direction toward the ground.

18. Structure according to claim 17, wherein said deflector and said edge comprise one integral piece.

19. A kit for installing a fringe-effect module in a substantially ground-level vault, comprising;

an electronics unit containing transmitting structure, receiving structure, processing structure, power structure, and a wiring connector;

plural antenna elements coupled to a top side of the electronics unit;

a radome coupled to the electronics unit and configured to cover the plural antenna elements;

mounting structure coupled to the electronics unit and configured to be coupleable to the substantially ground-level vault; and

a deflector disposed above the electronics unit and having an edge configured to bend RF signals of said plural antenna elements in a more horizontal direction.

20. A method of propagating RF signals to/from a substantially ground-level vault having an antenna element below ground level, comprising:

coupling a support structure into the substantially ground-level vault;

disposing a sloped deflector, coupled to the support structure, to intersect a main beam of the antenna element; and

disposing an edge of the deflector to cause a fringe effect on the RF signals of said antenna element to bend the RF signals in a direction toward the ground level.