MULTI-FEED DIPOLE ANTENNA AND METHOD

• US 20110227776A1
• Filed: 03/19/2010
• Published: 09/22/2011
• Est. Priority Date: 02/21/2008
• Status: Active Grant

• Current Assignee: AntennaSys, Inc.
• Original Assignee: AntennaSys, Inc.
• Inventors: WEBB, Spencer L.
• Granted Patent: US 8,451,185 B2
• Time in Patent Office: Days
• US Class Current: 342/14
• CPC Class Codes: H01Q 21/29 Combinations of different interacting antenna units for giving a desired directional characteristic H01Q25/00 takes precedence
• CPC Class Codes: H01Q 5/25 Ultra-wideband [UWB] systems, e.g. multiple resonance systems; Pulse systems
• CPC Class Codes: H01Q 5/35 using two or more simultaneously fed points
• CPC Class Codes: H01Q 9/22 Rigid rod or equivalent tubular element or elements
• CPC Class Codes: H01Q 9/28 Conical, cylindrical, cage, strip, gauze, or like elements having an extended radiating surface; Elements comprising two conical surfaces having collinear axes and adjacent apices and fed by two-conductor transmission lines waveguide horns or mouths H01Q13/00; slot antennas H01Q13/00

Abstract

A multi-feed dipole antenna and method. Provides a volumetrically efficient antenna with wide radiation pattern bandwidth and wide impedance bandwidth that are relatively independent. Driving the antenna at multiple locations provides for a half wavelength dipole antenna with a wider frequency range than any other known fat dipole of similar volume. The apparatus is constructed from brass or any other suitable metal without requiring dielectric loading and without requiring direct coupling on the outside of the tubes. The apparatus utilizes a parasitic center tube with two end tubes that are driven by a collinearly mounted metal rod that is driven from the midpoint. Insulators hold the parasitic tube to the end tubes. The parasitic tube allows for induced currents to flow on the surface of the tube which allow for operation of the dipole over a wide frequency range.

Claims

1. A multi-feed dipole antenna comprising:

a top tube;

a bottom tube;

a top pin conductively connected to said top tube;

a bottom pin conductively connected to said bottom tube;

a center tube insulatively coupled with said top tube and said bottom tube and positioned coaxially between said top tube and said bottom tube; and

,

wherein said multi-feed dipole antenna is fed from both said top tube and said bottom tube via said top pin and said bottom pin respectively.

2. The multi-feed dipole antenna of claim 1 wherein said top tube is conductively connected to said top pin via a top pin plate and wherein said bottom tube is conductively connected to said bottom pin via a bottom pin plate.

3. The multi-feed dipole antenna of claim 1 wherein further comprising a feed point coupled with said top pin and said bottom pin.

4. The multi-feed dipole antenna of claim 1 wherein said top tube comprises two rectangular parallel plates and said bottom tube comprises two rectangular parallel plates and wherein said center tube comprises two rectangular plates and wherein said multi-feed dipole antenna is configured to fit in a rectangular volume.

5. The multi-feed dipole antenna of claim 3 wherein said top tube, said bottom tube and said center tube are formed on a printed circuit board.

6. The multi-feed dipole antenna of claim 1 further comprising a reflector.

7. The multi-feed dipole antenna of claim 1 wherein said multi-feed dipole antenna is formed into an array using a plurality of multi-feed dipole antennas.

8. The multi-feed dipole antenna of claim 1 wherein said multi-feed dipole antenna is coupled with an IED jammer.

9. The multi-feed dipole antenna of claim 1 wherein said multi-feed dipole antenna is coupled with at least one cell phone transceiver.

10. The multi-feed dipole antenna of claim 1 wherein said multi-feed dipole antenna is coupled with a PCS and a GSM transceiver.

11. A multi-feed dipole antenna comprising:

a top tube;

a bottom tube;

a top pin conductively connected to said top tube via a top pin plate;

a bottom pin conductively connected to said bottom tube via a bottom pin plate;

a center tube insulatively coupled with said top tube and said bottom tube and positioned coaxially between said top tube and said bottom tube;

a feed point coupled with said top pin and said bottom pin; and

,

wherein said multi-feed dipole antenna is fed from both said top tube and said bottom tube via said top pin and said bottom pin respectively at said feed point.

13. The method of claim 11 further comprising:

conductively connecting said top tube to said top pin via a top pin plate; and

,

conductively connecting said bottom tube to said bottom pin via a bottom pin plate.

14. The method of claim 11 further comprising:

coupling a feed point with said top pin and said bottom pin.

15. The method of claim 11 further comprising:

forming said top tube into two rectangular parallel plates;

forming said bottom tube into two rectangular parallel plates; and

,

forming said center tube into two rectangular plates to allow said multi-feed dipole antenna to fit in a rectangular volume.

16. The method of claim 14 further comprising:

forming said top tube, said bottom tube and said center tube on a printed circuit board.

17. The method of claim 11 further comprising:

associating said multi-feed dipole antenna with a reflector.

18. The method of claim 11 further comprising:

forming said multi-feed dipole antenna into an array using a plurality of multi-feed dipole antennas.

19. The method of claim 11 further comprising:

coupling said multi-feed dipole antenna with an IED jammer.

20. The method of claim 11 further comprising:

coupling said multi-feed dipole antenna with at least one cell phone transceiver.

12. A method for manufacturing a multi-feed dipole antenna comprising:

coupling a top tube conductively with a top pin;

coupling a bottom tube conductively with a bottom pin;

coupling a center tube insulatively said top tube and said bottom tube; and

,

providing a feed point coupled with said top pin and said bottom pin wherein said feed point is configured to feed said top tube and said bottom tube via said top pin and said bottom pin respectively.