Dual Band Antenna Feeding

• US 20080024382A1
• Filed: 10/14/2005
• Published: 01/31/2008
• Est. Priority Date: 11/30/2004
• Status: Abandoned Application

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Nordstrom, Andreas, Uddin, Jesper, Lindmark, Bjorn
• Application Number:
  US11/791,860
• Publication Number:
  US 20080024382A1
• Time in Patent Office: Days
• US Class Current: 343/841
• CPC Class Codes: H01Q 1/526 Electromagnetic shields
• CPC Class Codes: H01Q 21/26 Turnstile or like antennas comprising arrangements of three or more elongated elements disposed radially and symmetrically in a horizontal plane about a common centre
• CPC Class Codes: H01Q 5/40 Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements
• CPC Class Codes: H01Q 9/0414 in a stacked or folded configuration
• CPC Class Codes: H01Q 9/0428 radiating a circular polarised wave
• CPC Class Codes: H01Q 9/0457 electromagnetically coupled to the feed line

Abstract

The present invention is related to a dual band antenna 1 comprising a number of antenna elements for transmitting and/or receiving radio frequency radiation. The antenna elements are placed above each other, and a shielded feeding means 9 is provided through a first antenna element 2 to a second antenna element 3 for separately feeding the different antenna elements 2, 3.

Claims

1. :

A dual band antenna comprising a number of antenna elements for transmitting and/or receiving radio frequency radiation, said antenna elements being placed above each other, characterised in that a shielded feeding means is provided through a first antenna element to a second antenna element for separately feeding the different antenna elements.

2. :

The dual band antenna as claimed in claim 1, wherein said shielded feeding means is arranged through an aperture area comprising one or more apertures provided in said first antenna element.

3. :

The dual band antenna as claimed in claim 1, wherein said shielded feeding means comprises a hollow pipe, through which cables are arranged for feeding said second antenna element.

4. :

The dual band antenna as claimed in claim 3, wherein the hollow pipe comprises several sections having different diameters.

5. :

The dual band antenna as claimed in claim 1, wherein said shielded feeding means is conductively connected directly to a ground plane.

6. :

The dual band antenna as claimed in claim 5, wherein said shielded feeding means is conductively connected directly to a grounded primary reflector.

7. :

The dual band antenna as claimed in claim 1, wherein said shielded feeding means is conductively connected indirectly to a grounded primary reflector by means of a shielding cage.

8. :

The dual band antenna as claimed in claim 1, wherein the first antenna element is fed by an aperture in a ground plane.

9. :

The dual band antenna as claimed in claim 1, wherein said antenna elements comprise one of a group consisting of;

aperture antennas, such as slots, horns or aperture coupled patch antennas, dipole antennas or probe fed antennas.

10. :

The dual band antenna as claimed claim 1, wherein a first antenna element is adapted to radiate at a low frequency band, and a second antenna element is adapted to radiate at a high frequency band.

11. :

The dual band antenna as claimed in claim 1, wherein the dual band antenna comprises several antenna elements and whereby the shielded feeding means 9 is arranged through each of said antenna elements.