Ultra wideband antenna

• US 7,262,741 B2
• Filed: 12/01/2005
• Issued: 08/28/2007
• Est. Priority Date: 12/03/2004
• Status: Expired due to Fees

• Current Assignee: Sony Deutschland GmbH (Sony Group Corp.)
• Original Assignee: Sony Deutschland GmbH (Sony Group Corp.)
• Inventors: Ratni, Mohamed, Krupezevic, Dragan
• Primary Examiner(s): CHEN, SHIH CHAO
• Application Number:
  US11/291,406
• Publication Number:
  US 20060119529A1
• Time in Patent Office: 635 Days
• Field of Search: 343/732, 343/769, 343/770, 343/793, 343/797, 343/830
• US Class Current: 343/770
• CPC Class Codes: H01Q 1/36 Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewithH01Q1/08, H01Q1/14 take precedence

Abstract

An ultra wideband antenna includes at least one radiator for transmitting and/or receiving an electromagnetic wave, the radiator having a planar elliptical shape for the whole UWB frequency band and one having at least one elliptical gap for omitting the transmission and reception of an electromagnetic wave at a predefined wavelength λ, whereby the length of the gap depends on the predefined wavelength λ.

Claims

1. An ultra wideband antenna, comprising:

at least one radiator for transmitting and/or receiving an electromagnetic wave, said radiator having a planar elliptical shape,

wherein the antenna covers a whole UWB frequency band, and the radiator includes at least two elliptical gaps located concentrically and having a same center.

2. The antenna according to claim 1, wherein the antenna includes a single radiator.

3. The antenna according to claim 1, wherein the antenna includes two radiators located orthogonal to each other.

4. The antenna according to claim 1, wherein the antenna is a ground plane antenna.

5. The antenna according to claim 1, wherein the antenna is a dipole antenna.

6. A mobile or fixed terminal comprising an ultra wideband antenna according to claim 1.

7. An ultra wideband antenna, comprising:

at least one radiator for transmitting and/or receiving an electromagnetic wave, said radiator having a planar elliptical shape and having at least two elliptical gaps for suppressing the transmission and reception of an electromagnetic wave at a predefined wavelength λ

,

wherein the length of each gap depends on said predefined wavelength λ

, and the at least two elliptical gaps are located concentrically and have a same center.

8. The antenna according to claim 7, wherein the length of each gap is in the range of a quarter of said predefined wavelength λ

.

9. The antenna according to claim 7, wherein a center of the radiator is not coincident with the center of the elliptical gaps such that the radiator is located eccentrically from the gaps.

10. The antenna according to claim 7, wherein the antenna includes a feeding circuit for transferring signal energy to and/or from the radiator.

11. The antenna according to claim 10, wherein the center of each elliptical gap is located on a straight line(s) extending from the center of the radiator to the feeding circuit.

12. An ultra wideband antenna, comprising:

at least one radiator configured to transmit or receive an electromagnetic wave, said radiator having a planar elliptical shape,

wherein the antenna covers a whole UWB frequency band, and the radiator includes at least two elliptical gaps located concentrically and having a same center.

13. The antenna according to claim 12, wherein the antenna includes a single radiator.

14. The antenna according to claim 12, wherein the antenna includes two radiators located orthogonal to each other.

15. The antenna according to claim 12, wherein the antenna is a ground plane antenna.

16. The antenna according to claim 12, wherein the antenna is a dipole antenna.

17. A mobile or fixed terminal comprising an ultra wideband antenna according to claim 12.