Physically small spiral antenna

• US 7,586,462 B1
• Filed: 01/08/2008
• Issued: 09/08/2009
• Est. Priority Date: 01/29/2007
• Status: Active Grant

• Current Assignee: Stephen G. Tetorka
• Original Assignee: Stephen G. Tetorka
• Inventors: Tetorka, Stephen Gregory
• Primary Examiner(s): Barnie; Rexford N
• Assistant Examiner(s): WHITE, DYLAN C
• Application Number:
  US12/008,075
• Time in Patent Office: 609 Days
• Field of Search: 343793-823, 343/895
• US Class Current: 343/895
• CPC Class Codes: H01Q 1/1228 on a boom
• 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
• CPC Class Codes: H01Q 19/10 using reflecting surfaces
• CPC Class Codes: H01Q 5/357 using a single feed point
• CPC Class Codes: H01Q 9/27 Spiral antennas
• 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

An improved dipole antenna having unbalanced radio frequency current in spiral radiating elements operating on a plurality of resonant frequencies providing a wide range of impedance matching to a device feeding radio frequency energy to said antenna. Said dipole antenna is also configured with parasitic spiral elements to provide increased operational performance. Each said spiral radiating element electrical parameter enabling said element to be operated alone. Said dipole antenna operates on any portion of the radio frequency spectrum.

Claims

1. A dipole antenna, comprising:

two spiral wire elements providing unbalanced radio frequency current,

wherein said spiral wire elements of said antenna resonates at frequencies without the need for additional devices or components to achieve resonance,

wherein said spiral wire elements of said antenna are directly connected to a transmission line, the connection between said transmission line and said spiral elements is made on any portion of said spiral wire elements, and providing impedance matching to the circuit feeding radio frequency energy to said antenna without the need for additional devices or components to achieve impedance matching, and

wherein said spiral wire elements radiate a majority of the radio frequency energy.

2. The dipole antenna of claim 1, whereby said antenna structure is to be mounted outside.

3. The dipole antenna of claim 1, wherein said antenna size and dimension to have a construction determined by the frequency of operation, the choice of material composition or the choice of process for creating said spiral elements.

4. The dipole antenna of claim 1, wherein said antenna provides low standing wave ratio at a plurality of frequencies in the radio frequency spectrum.

5. The dipole antenna of claim 1, wherein said antenna provides focusing and Yagi-like directivity of said antenna radiation to a preferred geographic location.

6. The dipole antenna of claim 1, wherein one or a plurality of said spiral wire elements wind in the same or opposite radial direction with reference to the feed point of said antenna.

7. The dipole antenna of claim 1, wherein the plane of one or a plurality of said spiral wire elements be at any angle with reference to the ground plane.

8. The dipole antenna of claim 1, wherein said antenna utilize only one said spiral wire element.

9. The dipole antenna of claim 1, wherein one or a plurality of said spiral elements are self supporting.

10. The dipole antenna of claim 1, further including said spiral wire elements are balanced with radio frequency current.

11. The dipole antenna of claim 1, further including said spiral wire elements used with devices to achieve resonance, tuning, or impedance matching.

12. A dipole antenna, comprising:

two spiral wire elements wherein each spiral wire element has a plurality of spiral segments made from one continuous conductor, while providing unbalanced radio frequency current, wherein the spiral wire elements of said antenna resonate on one or a plurality of frequencies, wherein the spiral wire elements are directly connected to a transmission line, and provide impedance matching to a device feeding radio frequency current to said antenna without the need for additional devices or components, wherein said antenna will operate at any combination of frequencies in the radio spectrum.

13. The dipole antenna of claim 12, wherein said antenna size and dimension to have a construction chosen by the frequency of operation, the choice of material composition, or the choice of process for creating said elements.

14. The dipole antenna of claim 12, wherein said antenna provides low standing wave ratio at a plurality of frequencies in the radio frequency spectrum.

15. The dipole antenna of claim 12, wherein said antenna provides focusing and Yagi-like directivity of said antenna radiation to a preferred geographic location.

16. The dipole antenna of claim 12, wherein said spiral wire elements wind in the same or opposite radial direction with reference to the feed point of said antenna.

17. The dipole antenna of claim 12, wherein the plane of said spiral wire elements be at any angle with reference to the ground plane.

18. The dipole antenna of claim 12, wherein said spiral wire elements are self supporting.

19. The dipole antenna of claim 12, wherein said spiral wire elements are balanced with radio frequency current.

20. The dipole antenna of claim 12, further including said spiral wire elements be used with devices to achieve resonance, tuning, or impedance matching.