WIDEBAND ANTENNA FOR MOBILE DEVICES

• US 20080129628A1
• Filed: 12/01/2006
• Published: 06/05/2008
• Est. Priority Date: 12/01/2006
• Status: Abandoned Application

• Current Assignee: Flextronics America LLC (Flextronics International Limited)
• Original Assignee: Flextronics America LLC (Flextronics International Limited)
• Inventors: Karlsson, Hakan, Rosengren, Kent
• Application Number:
  US11/565,906
• Publication Number:
  US 20080129628A1
• Time in Patent Office: Days
• US Class Current: 343/785
• CPC Class Codes: H01Q 1/243 with built-in antennas
• CPC Class Codes: H01Q 5/25 Ultra-wideband [UWB] systems, e.g. multiple resonance systems; Pulse systems
• CPC Class Codes: H01Q 5/371 Branching current paths

Abstract

A dielectric based antenna provides for relatively wide band communications. In this regard, the dielectric based antenna may provide communications across a variety of mobile telephone communication types and frequencies, such as GSM850, EGSM900, DCS1800, PCS1900, and UMTS. In one embodiment, the dielectric based antenna includes a dielectric element and at least first and second antenna elements. The dielectric element may be configured into a volumetric shape from a material with a relatively high permittivity. The first and second antenna elements are respectively wrapped about first and second portions of the dielectric element and may provide for respective first and second frequency bands of the dielectric based antenna. An antenna feed port couples the dielectric based antenna to a communication module via an antenna feed such that radio signals may be transmitted and/or received through the dielectric based antenna.

Claims

1. A wireless communication device, including:

a dielectric based antenna that includes a dielectric element and at least first and second antenna elements, wherein the first and second antenna elements are respectively wrapped about first and second portions of the dielectric element;

an antenna feed coupled to the dielectric based antenna; and

a communication module coupled to the antenna feed.

2. The wireless communication device of claim 1, wherein the first antenna element has a surface area that is greater than the surface area of the second antenna element.

3. The wireless communication device of claim 2, wherein the antenna feed is galvanically coupled to the second antenna element.

4. The wireless communication device of claim 2, wherein the first antenna element is coupled to the second antenna element via a strip feed.

5. The wireless communication device of claim 4, wherein the first antenna element, the second antenna element, and the strip feed are configured from substantially the same conductive material.

6. The wireless communication device of claim 4, wherein the first antenna element, the second antenna element, and the strip feed are configured from a single conductive material.

7. The wireless communication device of claim 1, wherein the dielectric element includes an aperture that provides an air slot between the first and second antenna elements.

8. The wireless communication device of claim 1, further comprising an antenna feed port configured proximate to the second antenna element for providing a coaxial coupling to the antenna feed, wherein the antenna feed is a coaxial cable.

9. The wireless communication device of claim 1, further comprising an antenna feed port configured proximate to the second antenna element for providing a galvanic coupling to the antenna feed, wherein the antenna feed is a conductive strip.

10. The wireless communication device of claim 1, wherein the communication module is a receiver, transmitter, or a transceiver.

11. The wireless communication device of claim 1, wherein the dielectric element includes a material having a high permittivity.

12. The wireless communication device of claim 1, wherein the dielectric based antenna is either a monopole antenna or a dipole antenna.

13. The wireless communication device of claim 1, wherein the dielectric based antenna is operable with a range of radio frequencies from about 800 MHz to about 2200 MHz.

14. The wireless communication device of claim 1, wherein the dielectric based antenna is operable with one or more communication signal types selected from a group consisting of GSM 850, EGSM 900, DCS 1800, PCS 1900, and UMTS.

15. The wireless communication device of claim 1, wherein the dielectric based antenna is operable with at least the following communication signal types:

GSM 850, EGSM 900, DCS 1800, PCS 1900, and UMTS.

16. A dielectric based antenna, including:

a dielectric element;

a conductive antenna element wrapped about at least a portion of the dielectric element; and

an antenna feed port galvanically coupled to the conductive antenna element.

17. A dielectric based antenna, including:

a substrate;

a ground plane affixed to a first layer of the substrate;

a dielectric element having a first permittivity and a surface, wherein the dielectric element is mounted on the first layer of a substrate proximate to the ground plane;

an antenna module affixed to at least a portion of the surface of the dielectric element; and

an antenna feed coupled to the antenna module.

18. The dielectric based antenna of claim 17, wherein the antenna element is configured for operation with a wide band of radio frequencies.

19. The dielectric based antenna of claim 18, wherein the antenna module includes a first antenna element that transmits radio signals within a first band of radio frequencies within the wide band of radio frequencies.

20. The dielectric based antenna of claim 19, wherein the antenna module includes a second antenna element that transmits radio signals within a second band of radio frequencies within the wideband of radio frequencies, wherein the second band of radio frequencies is higher than the first band of radio frequencies.

21. The dielectric based antenna of claim 20, wherein the first antenna element is affixed to a first portion of the surface of the dielectric element and the second antenna element is affixed to a second portion of the surface of the dielectric element.

22. The dielectric based antenna of claim 19, wherein the antenna element includes an air slot configured between the first antenna element and the second antenna element.

23. The dielectric based antenna of claim 19, wherein the antenna element includes a conductive strip coupling the first antenna element in the second antenna element.

24. The dielectric based antenna of claim 19, wherein the wideband of radio frequencies includes a range from about 800 MHz to about 2200 MHz.

25. The dielectric based antenna of claim 17, wherein the antenna module is operable with one or more communication signal types selected from a group consisting of GSM 850, EGSM 900, DCS 1800, PCS 1900, and UMTS.

26. The dielectric based antenna of claim 17, wherein the antenna module is operable with at least the following communication signal types:

GSM 850, EGSM 900, DCS 1800, PCS 1900, and UMTS.

27. The dielectric based antenna of claim 17, wherein the dielectric element is configured from a ceramic material having a high permittivity.

28. The dielectric based antenna of claim 17, wherein the antenna module includes at least a first antenna element and a second antenna element and wherein the dielectric based antenna further includes an antenna feed port galvanically coupled to the second antenna element.

29. The dielectric based antenna of claim 28, wherein the antenna feed is a coaxial cable that couples to the antenna feed port.

30. The dielectric based antenna of claim 28, wherein the antenna feed is a conductive strip that galvanically couples to the antenna feed port.

31. A method of transmitting radio signals, including:

providing a dielectric based antenna having a first antenna element and a second antenna element wrapped about a dielectric element that configures a frequency range of operability for the dielectric based antenna;

transmitting a first radio signal at a first frequency within the frequency range of operability; and

after transmitting the first radio signal at the first frequency, transmitting a second radio signal at a second frequency within the frequency range of operability, wherein the first frequency differs from the second frequency.

32. The method of claim 31, wherein the first and second radio signals are selected from a group consisting of GSM 850, EGSM 900, DCS 1800, PCS 1900, and UMTS.