Dual band antenna and methods for use therewith

• US 8,339,258 B2
• Filed: 10/14/2011
• Issued: 12/25/2012
• Est. Priority Date: 03/30/2007
• Status: Active Grant

• Current Assignee: NXP USA, Inc. (NXP Semiconductors NV)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Rofougaran, Ahmadreza (Reza)
• Primary Examiner(s): TRIEU, VAN THANH
• Application Number:
  US13/273,819
• Publication Number:
  US 20120034869A1
• Time in Patent Office: 438 Days
• Field of Search: 340/539.1, 340/539.11, 340/568.1, 340/571, 340/572.1, 340/572.4, 340/572.7, 340/539.21, 340/5.61, 340/10.1, 340/13.27, 343/700.MS, 343/743, 343/786, 343/793, 343/819, 343/895, 455/41.1, 235/462.46
• US Class Current: 340/539.1
• CPC Class Codes: H04B 5/22 Capacitive coupling
• CPC Class Codes: H04B 5/263 Multiple coils at either side
• CPC Class Codes: H04B 5/77 for interrogation

Abstract

A dual band antenna includes a far field antenna structure for facilitating the communication of first data with a remote device via far field signaling in a millimeter wave band. A near field antenna structure facilitates the communication of second data with a remote device via near field signaling in a near field band. The far field antenna structure and the near field antenna structure share at least one common antenna element.

Claims

1. A dual band antenna comprising:

a far field antenna structure for facilitating the communication of first data with a remote device via far field signaling in a millimeter wave band;

a near field antenna structure for facilitating the communication of second data with a remote device via near field signaling in a near field band, wherein the near field band is a frequency band that is lower than the millimeter wave band and wherein the near field antenna structure includes a coil having at least one turn;

wherein the far field antenna structure and the near field antenna structure share at least one common antenna element and wherein the at least one common antenna element includes a first portion of the coil.

2. The dual band antenna of claim 1 wherein the near field band includes one of:

a 900 MHz frequency band, and a 13.5 MHz frequency band.

3. The dual band antenna of claim 1 wherein the far field antenna structure includes a monopole antenna and the first portion of the coil forms an element of the monopole antenna.

4. The dual band antenna of claim 1 wherein the coil further includes at least one inductive element that isolates the first portion of the coil from a remainder of the coil at the millimeter wave band.

5. The dual band antenna of claim 1 wherein the coil further includes a plurality of inductive elements that isolate the first portion of the coil from a remainder of the coil at the millimeter wave band.

6. The dual band antenna of claim 1 wherein the at least one common antenna element further includes a second portion of the coil.

7. The dual band antenna of claim 6 wherein the far field antenna structure includes a dipole antenna and the first portion of the coil and the second portion of the coil form elements of the dipole antenna.

8. The dual band antenna of claim 6 wherein the coil further includes a plurality of inductive elements that isolate the first portion of the coil and the second portion of the coil from a remainder of the coil at the millimeter wave band.

9. A dual band antenna comprising:

a far field antenna structure for facilitating the communication of first data with a remote device via far field signaling in a millimeter wave band; and

a near field antenna structure for facilitating the communication of second data with a remote device via near field signaling in a near field band, wherein the near field band is a frequency band that is lower than the millimeter wave band;

wherein the far field antenna structure and the near field antenna structure share at least one common antenna element.

10. The dual band antenna of claim 9 wherein the near field band includes one of:

a 900 MHz frequency band, and a 13.5 MHz frequency band.

11. The dual band antenna of claim 9 wherein the near field antenna structure includes a coil having at least one turn and wherein at least one common antenna element includes a first portion of the coil.

12. The dual band antenna of claim 11 wherein the far field antenna structure includes a monopole antenna and the first portion of the coil forms an element of the monopole antenna.

13. The dual band antenna of claim 11 wherein the coil further includes at least one inductive element that isolates the first portion of the coil from a remainder of the coil at the millimeter wave band.

14. The dual band antenna of claim 11 wherein the coil further includes a plurality of inductive elements that isolate the first portion of the coil from a remainder of the coil at the millimeter wave band.

15. The dual band antenna of claim 11 wherein the at least one common antenna element further includes a second portion of the coil.

16. The dual band antenna of claim 15 wherein the far field antenna structure includes a dipole antenna and the first portion of the coil and the second portion of the coil form elements of the dipole antenna.

17. The dual band antenna of claim 15 wherein the coil further includes a plurality of inductive elements that isolate the first portion of the coil and the second portion of the coil from a remainder of the coil at the millimeter wave band.

18. A method comprising:

facilitating communication of first data with a remote device via far field signaling in a millimeter wave band via a dual band antenna structure; and

facilitating the communication of second data with the remote device via near field signaling in a near field band via the dual band antenna structure, wherein the near field band includes one of;

a 900 MHz frequency band, and a 13.5 MHz frequency band.

19. The method of claim 18 wherein the millimeter wave band includes a 60 GHz frequency band.