Antenna device

• US 8,525,734 B2
• Filed: 12/21/2006
• Issued: 09/03/2013
• Est. Priority Date: 12/21/2006
• Status: Active Grant

• Current Assignee: Nokia Technologies Oy (Nokia Corporation)
• Original Assignee: Nokia Corporation
• Inventors: Krogerus, Joonas Veli-Allan
• Primary Examiner(s): PHAN, THO GIA
• Application Number:
  US12/520,719
• Publication Number:
  US 20100214180A1
• Time in Patent Office: 2,448 Days
• Field of Search: 343/700, 343/702, 343/745, 343/749, 343/846
• US Class Current: 343/702
• CPC Class Codes: H01Q 1/243 with built-in antennas
• CPC Class Codes: H01Q 1/48 Earthing means; Earth screens; Counterpoises
• CPC Class Codes: H01Q 5/00 Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements combinations of separate active antenna units operating in different wavebands and connected to a common feeder system H01Q21/30
• CPC Class Codes: H01Q 5/321 within a radiating element or between connected radiating elements
• CPC Class Codes: H01Q 5/371 Branching current paths
• CPC Class Codes: H01Q 5/385 Two or more parasitic elements
• CPC Class Codes: H01Q 5/392 the parasitic elements having dual-band or multi-band characteristics
• CPC Class Codes: H01Q 9/0442 with particular tuning means

Abstract

An antenna device for a portable electronic device and an electronic device provided with such an antenna are disclosed. The antenna device is configured to provide in a combination a tuning element for tuning at least one electrical dimension of the portable electronic device and an antenna radiator element of the portable electronic device.

Claims

1. An antenna device for a portable electronic device configured to provide in a combination a tuning element for tuning at least one electrical dimension of the portable electronic device and an antenna radiator element of the portable electronic device.

2. An antenna device as claimed in claim 1, wherein the tuning element is configured to tune at least one electrical dimension of a ground plane of the portable electronic device.

3. An antenna device as claimed in claim 1, wherein the ground plane comprises a printed wiring board.

4. An antenna device as claimed in claim 1, wherein the ground plane is embedded in at least one of a cover of the portable electronic device or is provided as a part of the housing of the portable electronic device.

5. An antenna device as claimed in claim 1, wherein the tuning element is configured to tune the at least one electrical dimension of the portable electronic device so that the resonance thereof is substantially optimal on at least one given frequency.

6. An antenna device as claimed in claim 1, comprising at least one separator for separating the functions of the tuning element and the antenna radiator element.

7. An antenna device as claimed in claim 6, wherein the at least one separator comprises at least one of at least one filter and at least one radio frequency switch.

8. An antenna device as claimed in claim 1, wherein the tuning element comprises at least one of a slot, wavetrap, grounded microwave element or loading element.

9. An antenna device as claimed in claim 1, wherein the at least one electrical dimension comprises at least one of an electrical length and electrical width.

10. An antenna device as claimed in claim 1, wherein the at least one electrical dimension comprises at least one dimension of at least one of a chassis, a ground plane and printed wiring board of the portable device.

11. An antenna device as claimed in claim 1, wherein the tuning element is configured to change an electrical dimension of the portable electronic device.

12. An antenna device as claimed in claim 1, wherein the tuning element and the antenna radiator element operate on different frequency bands.

13. An antenna device as claimed in claim 1, comprising at least two chokes.

14. An antenna device as claimed in claim 13, wherein at least one of the length or shape of the at least two chokes is different.

15. An antenna device as claimed in claim 13, comprising lumped inductors with different inductor values within the at least two chokes.

16. A portable electronic device comprising an antenna device configured to provide in a combination a tuning element for tuning at least one electrical dimension of a ground plane of the portable electronic device and an antenna radiator element of the portable electronic device.

17. Portable electronic device as claimed in claim 16, wherein the portable electronic device is configured to detect operational state thereof and the antenna device is configured to be responsive to a detected operational state.

18. A method in a portable electronic device, comprising tuning at least one electrical dimension of the portable electronic device by a combined tuning and antenna radiator device;

and communicating radio signals via the tuned portable electronic device.

19. A method as claimed in claim 18, comprising tuning the at least one electrical dimension of the portable electronic device so that the resonance thereof is substantially optimal on at least one given frequency.

20. A method as claimed in claim 18, comprising changing an electrical dimension of the portable electronic device.