Elliptical conical antenna apparatus and methods

• US 10,128,568 B1
• Filed: 12/19/2016
• Issued: 11/13/2018
• Est. Priority Date: 12/19/2016
• Status: Active Grant

• Current Assignee: the united states of america as represented by the secretary of the navy
• Original Assignee: The United States of America As Represented By The Secretary of Agriculture
• Inventors: Arney, David V., Bermeo, Dennis G., Snyder, Glenn D., Simonds, Hale B., Berens, Peter S.
• Primary Examiner(s): Munoz, Daniel J
• Application Number:
  US15/382,907
• Time in Patent Office: 694 Days
• 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 1/42 Housings not intimately mechanically associated with radiating elements, e.g. radome
• CPC Class Codes: H01Q 21/28 Combinations of substantially independent non-interacting antenna units or systems multiple beam H01Q25/00
• 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
• CPC Class Codes: H01Q 9/30 with feed to end of elongated active element, e.g. unipole H01Q9/44 takes precedence
• CPC Class Codes: H01Q 9/40 Element having extended radiating surface

Abstract

An elliptical portion having planform cross-section involving a generally circular configuration and an elevational cross-section having at least a partial elliptical configuration; a conical portion having at least one of a conical configuration and a frustoconical configuration, the conical portion coupled with the elliptical portion; and a modifier feed, the modifier feed having a first feed element and a second feed element, whereby the antenna apparatus is configured to perform as a monopole antenna at a low frequency and as a hybrid monopole-biconical antenna at a high frequency.

Claims

1. An oblate ellipsoidal conical antenna apparatus for enhancing antenna performance, comprising:

an oblate ellipsoidal portion having planform cross-section comprising a generally circular configuration and an elevational cross-section comprising at least a partial oblate ellipsoidal configuration;

a conical portion comprising at least one of a conical configuration and a frustoconical configuration, the conical portion coupled with the oblate ellipsoidal portion; and

a modifier feed, the modifier feed comprising a first feed element and a second feed element,

whereby the antenna apparatus is configured to perform as a monopole antenna at a low frequency and as a hybrid monopole-biconical antenna at a high frequency.

2. The apparatus of claim 1, further comprising a ground plane configured to couple with the conical portion.

3. The apparatus of claim 2, wherein the ground plane comprises a finite ground plane.

4. The apparatus of claim 2, wherein the ground plane is configured to accommodate a modifier feed.

5. The apparatus of claim 1, wherein the first feed element and the second feed element converge at a feed point.

6. The apparatus of claim 5,

wherein the modifier feed further comprises an RF feed line configured to at least one of:

couple with at least one of the oblate ellipsoidal portion and the conical portion; and

couple with the second feed element, and

wherein at least one of the first feed element and the second feed element is configured to one of;

couple with at least one of the oblate ellipsoidal portion, the conical portion, and the ground plane; and

integrally form with at least one of the oblate ellipsoidal portion, the conical portion, and the ground plane.

7. The apparatus of claim 5, further comprising a coupling structure for mechanically coupling at least two components of the modifier feed.

8. The apparatus of claim 1, wherein the oblate ellipsoidal portion and the conical portion are one of separately formed and integrally formed.

9. The apparatus of claim 1,

wherein the oblate ellipsoidal portion and the conical portion, together, comprise a constant height,

wherein the oblate ellipsoidal portion and the conical portion, together, comprise a variable width, and

whereby antenna performance is enhanceable for a plurality of frequency ranges and a plurality of frequency bandwidths.

10. The apparatus of claim 1, wherein the oblate ellipsoidal portion and the conical portion are configurable for simulating at least one of an omnidirectional antenna and a biconical antenna.

11. A method of fabricating an oblate ellipsoidal conical antenna apparatus for enhancing antenna performance, comprising:

providing an ellipsoidal portion having planform cross-section comprising a generally circular configuration and an elevational cross-section comprising at least a partial oblate ellipsoidal configuration;

providing a conical portion comprising at least one of a conical configuration and a frustoconical configuration, the conical portion coupled with the oblate ellipsoidal portion; and

providing a modifier feed, providing the modifier feed comprising providing a first feed element and providing a second feed element,

thereby configuring the antenna apparatus to perform as a monopole antenna at a low frequency and as a hybrid monopole-biconical antenna at a high frequency.

12. The method of claim 11, further comprising providing a ground plane configured to couple with the conical portion.

13. The method of claim 12, wherein providing the ground plane comprises providing a finite ground plane.

14. The method of claim 12, wherein providing the ground plane comprises configuring the ground plane to accommodate a modifier feed.

15. The method of claim 11, wherein providing the first feed element and providing the second feed element, together, comprise converging the first feed element and the second feed element at a feed point.

16. The method of claim 15,

wherein providing the modifier feed further comprises providing an RF feed line configured to at least one of:

couple with at least one of the oblate ellipsoidal portion and the conical portion; and

couple with the second feed element, and

wherein providing at least one of the first feed element and the second feed element comprises one of;

coupling at least one of the first feed element and the second feed element with at least one of the elliptical portion, the conical portion, and the ground plane; and

integrally forming at least one of the first feed element and the second feed element with at least one of the oblate ellipsoidal portion, the conical portion, and the ground plane.

17. The method of claim 15, further comprising providing a coupling structure for mechanically coupling at least two components of the modifier feed.

18. The method of claim 11, wherein providing the oblate ellipsoidal portion and providing the conical portion, together, comprise one of:

separately forming the oblate ellipsoidal portion and the conical portion; and

integrally forming the oblate ellipsoidal portion and the conical portion.

19. The method of claim 11,

wherein providing the oblate ellipsoidal portion and providing the conical portion, together, comprise providing a constant height,

wherein providing the oblate ellipsoidal portion and providing the conical portion, together, comprise providing a variable width,

wherein providing the oblate ellipsoidal portion and providing the conical portion comprises configuring the oblate ellipsoidal portion and the conical portion, together, for simulating at least one of an omnidirectional antenna and a biconical antenna.

20. A method of improving antenna performance by way of an oblate ellipsoidal conical antenna apparatus, comprising:

providing the oblate ellipsoidal conical antenna apparatus, providing the oblate ellipsoidal conical antenna apparatus comprising;

providing an oblate ellipsoidal portion having planform cross-section comprising a generally circular configuration and an elevational cross-section comprising at least a partial oblate ellipsoidal configuration;

providing a conical portion comprising at least one of a conical configuration and a frustoconical configuration, the conical portion coupled with the oblate ellipsoidal portion, and

providing a modifier feed, providing the modifier feed comprising providing a first feed element and providing a second feed element, wherein providing the first feed element and providing the second feed element, together, comprise converging the first feed element and the second feed element at a feed point, wherein providing the modifier feed further comprises providing an RF feed line configured to at least one of;

couple with at least one of the oblate ellipsoidal portion and the conical portion and couple with the second feed element;

thereby configuring the antenna apparatus to perform as a monopole antenna at a low frequency and as a hybrid monopole-biconical antenna at a high frequency, and

transmitting a signal through the RF feed line.