FLUSH-MOUNTED LOW-PROFILE RESONANT HOLE ANTENNA

• US 20120038525A1
• Filed: 09/10/2009
• Published: 02/16/2012
• Est. Priority Date: 09/12/2008
• Status: Active Grant

• Current Assignee: Advanced Automotive Antennas, S.L. (Panasonic Holdings Corporation)
• Original Assignee: Advanced Automotive Antennas, S.L. (Panasonic Holdings Corporation)
• Inventors: Quintero Illera, Ramiro, Sanz Arronte, Alfonso, Martinez Ortigosa, Enrique, Monsalve Carcelen, Beatriz
• Granted Patent: US 8,836,589 B2
• Time in Patent Office: Days
• US Class Current: 343/705
• CPC Class Codes: H01Q 1/286 substantially flush mounted with the skin of the craft
• CPC Class Codes: H01Q 13/18 the slot being backed by, or formed in boundary wall of, a resonant cavity longitudinally slotted cylinder H01Q13/12 ; Open cavity antennas
• CPC Class Codes: H01Q 9/0442 with particular tuning means
• CPC Class Codes: H01Q 9/0457 electromagnetically coupled to the feed line
• CPC Class Codes: H01Q 9/0464 Annular ring patch

Abstract

The invention relates to a flush-mounted aircraft, UAV or missile antenna system, which is an integral part of the fuselage (3) of an aircraft, UAV or missile. The antenna system comprises a surface (3) made of a conductive material and a resonant recess (4) formed in said conducting surface, wherein said recess is conformed to provide a resonant behaviour in a selected operating frequency, the antenna system further comprising a radiating element (2) located within said recess and a feeding element (5) within said recess coupled to said radiating element.

Claims

1. Antenna system comprising a conducting surface (1) made of a conductive material and a resonant recess (4) formed in said conducting surface, the antenna system further comprising a radiating element (2) located within said recess (4) and a feeding element (5) housed within said recess (4), wherein said feeding element is electromagnetically coupled to said radiating element (2), and wherein said recess is conformed to provide a resonant behaviour in a selected operating frequency, and wherein the radiating element is flush-mounted with respect to said conducting surface.

2. Antenna system according to claim 1 wherein the radiating element (2) is separated from the conductive surface (1) by means of a gap (11).

3. Antenna system according to claim 1 wherein said conducting surface is part of the fuselage of a flying artefact.

4. Antenna system according to claim 1 wherein said resonant recess is completely or in part filled with a dielectric material, and wherein the radiating element is supported by said dielectric material.

5. Antenna system according to claim 1 wherein the feeding element is capacitively coupled to said radiating element.

6. Antenna system according to claim 1 wherein said conductive material is selected from the group comprising:

carbon fiber, aluminium, titanium.

7. Antenna system according to claim 1 wherein said resonant recess has a substantially circular configuration or a substantially polygonal configuration.

8. Antenna system according to claim 7 wherein said resonant recess has a circular shape with a radius smaller than 1.5 wavelenghts.

9. Antenna system according to claim 1 wherein the antenna system is configured to provide a vertical polarization behaviour.

10. Antenna system according to claim 1 wherein the antenna system is configured to have an omnidirectional pattern on the horizontal plane.

11. Antenna system according to claim 1 wherein the radiating element is circular.

12. Antenna system according to claim 1 wherein the radiating element defines a planar or curved surface.

13. Antenna system according to claim 1 wherein the radiating element is electrically isolated from the conducting surface.

14. Flying artefact having an antenna system according to claim 1.

15. Flying artefact according to claim 14 wherein the flying artefact is an airplane, an helicopter, a missile or an UAV vehicle.