Remote antenna coupling in an AMR device

• US 8,330,669 B2
• Filed: 04/22/2010
• Issued: 12/11/2012
• Est. Priority Date: 04/22/2010
• Status: Active Grant

• Current Assignee: Itron, Inc.
• Original Assignee: Itron, Inc.
• Inventors: Cornwall, Mark K., Lin, Junsong
• Primary Examiner(s): Tran, Anh
• Application Number:
  US12/765,142
• Publication Number:
  US 20110260947A1
• Time in Patent Office: 964 Days
• Field of Search: 343/719, 343/906, 340/870.02, 340/870.03
• US Class Current: 343/906
• CPC Class Codes: H01Q 1/088 Quick-releasable antenna elements
• CPC Class Codes: H01Q 1/2233 used in consumption-meter devices, e.g. electricity, gas or water meters

Abstract

Disclosed are apparatus and methodology for providing improved signal radiation from an Automatic Meter Reading (AMR) endpoint module. A two-part coupler is provided, with one part thereof affixed to a printed circuit board (PCB) which hosts components of an endpoint module including a transmitter to which, via the two-part coupler, various antenna may be selectively connected to improve signal radiation from the module. The antenna coupling system provides a selection of various antennae including some directly connected to a component of the two-part coupler and others connected remotely to the two-part coupler by way of a cable.

Claims

1. A remote antenna coupler system for use in an Automatic Meter Reading (AMR) environment, comprising;

a male coupler portion, having a first portion configured for attachment to a printed circuit board, and having a second portion coupled to and extending above said first portion;

a plurality of female coupler portions, each respectively having a capture portion configured to mate with said second portion of said male coupler portion, and each respectively having a second portion coupled to and extending above said capture portion thereof; and

a plurality of diverse antennae structures associated individually with each of said plurality of female coupler portions,

whereby a selected combination of one of the plurality of diverse antennae structures and female coupler portions may be interchangeably coupled to said male coupler portion.

2. A system as in claim 1, wherein said male coupler portion comprises a first cylindrical portion and a second rectangular portion.

3. A system as in claim 1, wherein said male coupler portion comprises a first cylindrical portion having a first diameter and a second cylindrical portion having a second diameter less than that of the first cylindrical portion.

4. A system as in claim 1, wherein at least one of the plurality of diverse antennae structures comprises a linear extension of said second portion of said female coupler portion.

5. A system as in claim 1, wherein at least one of the plurality of diverse antennae structures comprises a quarter-wave length wire coupled to said second portion of said female coupler portion.

6. A system as in claim 1, further comprising:

a remote antenna structure; and

a length of cable;

wherein said length of cable is coupled between said remote antenna and said second portion of said female coupler portion;

whereby said remote antenna structure may be placed at a distance from said female coupler portion in accordance with the cable length.

7. A system as in claim 6, further comprising an impedance matching network coupled between said remote antenna structure and said length of cable.

8. An endpoint module for use in an AMR environment, comprising:

a printed circuit board;

a remote antenna coupler; and

a protective coating;

wherein said remote antenna coupler comprises a male coupler portion attached to one of said printed circuit board and an antenna structure, and comprises a female coupler portion having a capture portion configured to mate with said male coupler portion, and a second portion thereof configured to be coupled to the other of said printed circuit board and an antenna structure; and

wherein said protective coating at least partially covers said printed circuit board and at least a portion of the male coupler portion of said remote antenna coupler.

9. A module as in claim 8, wherein said male coupler portion is attached to said printed circuit board, and said second portion of said female coupler portion is configured to be coupled to an antenna structure.

10. A module as in claim 9, wherein said protective coating covers at least a portion of said second portion of said female coupler portion of said remote antenna coupler.

11. A module as in claim 9, further comprising an antenna element coupled to said second portion of said female coupler portion of said remote antenna coupler.

12. A module as in claim 11, wherein said antenna element comprises a quarter-wave length wire coupled to said second portion of said female coupler portion.

13. A module as in claim 11, further comprising:

a cable; and

wherein said antenna element comprises a remote antenna structure coupled to said second portion of said female coupler portion by way of said cable.

14. A module as in claim 13, further comprising an impedance matching network coupled between said remote antenna structure and said cable.

15. A method for selectively enhancing radio frequency (RF) communications from an endpoint module in an AMR environment, comprising:

providing an endpoint module having at least a transmitter portion;

providing a remote antenna coupler having a male coupler portion and a mating female coupler portion;

providing an antenna element;

coupling the male coupler portion to one of the transmitter portion of the endpoint module and the antenna element;

coupling the female coupler portion to the other of the transmitter portion of the endpoint module and the antenna element; and

coupling the female coupler portion to the male coupler portion.

16. A method as in claim 15, further including:

coupling the male coupler portion to the transmitter portion of the endpoint module; and

coupling the female coupler portion to the antenna element.

17. A method as in claim 16, further comprising:

providing a cable; and

wherein coupling the antenna element to the female coupler portion comprises coupling the antenna element to the female coupler portion by way of the cable.

18. A method as in claim 17, further comprising providing an impedance matching network between the antenna element and the cable.

19. A method as in claim 16, wherein:

providing an antenna element comprises providing a quarter-wave length antenna element; and

coupling the antenna element to the female coupler portion comprises directly coupling the antenna element to the female coupler portion.

20. A method as in claim 16, further comprising coating at least a portion of the endpoint module and the male coupler portion in a protective coating.

21. A method as in claim 16, further comprising coating at least a portion of the endpoint module and the female coupler portion in a protective coating.

22. A method as in claim 16, wherein providing a remote antenna coupler comprises providing a remote antenna coupler having rectangular mating male and female coupler portions.