Wideband antennas

• US 20090002251A1
• Filed: 06/05/2008
• Published: 01/01/2009
• Est. Priority Date: 06/06/2007
• Status: Active Grant

• Current Assignee: Thomson Licensing (Vantiva SA)
• Original Assignee: Thomson Licensing (Vantiva SA)
• Inventors: Louzir, Ali, Pintos, Jean-Francois, Chambelin, Philippe
• Granted Patent: US 8,284,113 B2
• Time in Patent Office: Days
• US Class Current: 343/795
• CPC Class Codes: H01Q 1/2291 used in bluetooth or WI-FI devices of Wireless Local Area Networks [WLAN] H01Q1/241 takes precedence; WLAN in general H04W
• CPC Class Codes: H01Q 9/285 Planar dipole H01Q9/065 takes precedence; patch antenna H01Q9/0407

Abstract

The invention relates to a dipole type wideband antenna comprising a substrate presenting two faces, a first conductive arm, a second conductive arm placed on the substrate, a feeder line supplying the second arm passing under the first arm.

In this case, the feeder line extends by a line element placed under the second arm, this element being dimensioned to filter a given frequency.

Claims

1. A wideband dipole type antenna comprising a substrate presenting two faces, a first conductor arm, a second conductor arm placed on the substrate, a feeder line supplying the second arm passing under the first arm, wherein the feeder line extends by a line element placed under the second arm, this element being dimensioned to filter a given frequency.

2. The antenna according to claim 1, wherein the length of the line element is of the order of λ

g/2 where λ

g is the guided wavelength in the line for the frequency band to reject.

3. The antenna according to claim 1, wherein the first arm is comprised of two conductive elements of identical geometry placed opposite each other on the two faces of the substrate.

4. The antenna relating to claim 3, wherein the feeder line is placed between the two conductive elements forming a stripline structure.

5. The antenna relating to claim 1, wherein the second arm is comprised of two conductive elements of identical geometry placed opposite each other on the two faces of the substrate.

6. The antenna relating to claim 1, wherein, when the conductive arms are constituted by two conductive elements on opposite sides, the two conductive elements are connected by holes made to pass through the substrate and filled with conductive material.

7. The antenna according to claim 6, wherein the holes are made on the periphery of the conductive elements.

8. The antenna according to claim 1, wherein the feeder line is realized by a microstrip line passing below the first conductor arm comprised of a sole conductor element realized on a substrate face, the microstrip line being realized on the other face of the substrate.

9. The antenna according to claim 8, wherein the second conductive arm is formed from a single conductive element realized on the same face of the substrate as the first arm.