Coaxial antenna system

• US 7,151,497 B2
• Filed: 10/28/2004
• Issued: 12/19/2006
• Est. Priority Date: 07/19/2003
• Status: Expired due to Fees

• Current Assignee: Bonnie A. Crystal
• Original Assignee: Bonnie A. Crystal
• Inventors: Crystal, Bonnie A.
• Primary Examiner(s): PHAN, THO GIA
• Application Number:
  US10/886,292
• Publication Number:
  US 20050040991A1
• Time in Patent Office: 782 Days
• Field of Search: 343/745, 343/747, 343/750, 343/792
• US Class Current: 343/747
• 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 9/16 with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole H01Q9/44 takes precedence

Abstract

An antenna system of coaxial elements and terminating impedances produces controlled bandwidth, broadband, and wideband performance under a variety of near field influences, with capability for simultaneous and alternating reception and radiation of electromagnetic radio energy. The antenna system enables broader bandwidths within miniaturized areas of confinement relative to wavelength. Singular elements of the system enable, and a plurality of elements of the system are combined to form specific bandpass, band reject, duplexing, and diplexing for radio frequencies as a function of the antenna system. The antenna system features complex terminating impedances which combine with characteristic impedances of coaxial structures to yield efficient radiating and matching functions for radio energy over a controlled bandwidth. The antenna system simultaneously utilizes the skin effect of electron flow with different vectors flowing on the internal and the external surfaces of the outside conductor of coaxial antenna elements with different vectors.

Claims

1. An antenna system for electromagnetic energy comprising:

a feedpoint having a first connection electrically connected to a first end of an outside conductor of a first coaxial antenna element with said feedpoint having a second connection electrically connected to a first end of an outside conductor of a second coaxial antenna element;

an inside conductor of said first end of said first coaxial antenna element electrically connected to an inside conductor of said first end of said second coaxial antenna element;

at least one second end of at least one said coaxial antenna element having electrical connections to a terminating impedance at said second end of said coaxial antenna element with said terminating impedance electrically connected between said inside conductor and said outside conductor of said coaxial antenna element.

2. The antenna system of claim 1 wherein at least one terminating impedance has reactance.

3. The antenna system of claim 1 wherein at least one terminating impedance has capacitance.

4. The antenna system of claim 1 wherein an outer conductor of at least one coaxial antenna element operatively coupled to a separate conductive surface along at least a portion of the length of the outer conductor of said coaxial antenna element.

5. The antenna system of claim 1 wherein at least one terminating impedance has inductance.

6. The antenna system of claim 1 wherein at least one terminating impedance has resistance.

7. The antenna system of claim 1 wherein at least one terminating impedance has a transmission line stub.

8. The antenna system of claim 1 wherein at least a portion of electrically conductive material has a dissipative resistive characteristic for electromagnetic energy.

9. An antenna system for electromagnetic energy comprising:

a feedpoint having a first connection electrically connected to a first end of an outside conductor of a coaxial antenna element with said feedpoint having a second connection electrically connected to an electrically conductive reference planet;

an inside conductor of said first end of said coaxial antenna element electrically connected to said electrically conductive reference plane via electrical connection through a first terminating impedance;

a second end of said coaxial antenna element having electrical connections to a second terminating impedance at said second end of said coaxial antenna element with said second terminating impedance connected between said inside conductor and said outside conductor of said coaxial antenna element.

10. The antenna system of claim 9 wherein at least one terminating impedance has reactance.

11. The antenna system of claim 9 wherein at least one terminating impedance has capacitance.

12. The antenna system of claim 9 wherein at least one terminating impedance has inductance.

13. The antenna system of claim 9 wherein at least one terminating impedance has resistance.

14. The antenna system of claim 9 wherein at least one terminating impedance has a transmission line stub.

15. The antenna system of claim 9 wherein at least a portion of electrically conductive material has a dissipative resistive characteristic for electromagnetic energy.

16. The antenna system of claim 9 wherein at least one antenna element is operatively coupled to a separate conductive surface along at least a portion of the length of said antenna element.

17. The antenna system of claim 9 wherein at least one reference plane is a separate conductive antenna element.

18. The antenna system of claim 9 wherein at least one reference plane is an electrical ground plane.

19. An antenna system for electromagnetic energy having a feedpoint first electrical connection to an outside conductor of a first coaxial antenna element while having at least one reactance electrically connected to at least one end of said first coaxial antenna element with said reactance connected between an inside conductor and said outside conductor of said first coaxial antenna element with said feedpoint having a second electrical connection to an outside conductor of a first end of a second coaxial antenna element with said inside conductor of said first end of said first coaxial element and an inside conductor of said second coaxial element electrically connected.

20. The antenna system of claim 19 wherein at least one reactance has capacitance.

21. The antenna system of claim 19 wherein an outer conductor of at least one coaxial antenna element is operatively coupled to a separate conductive surface along at least a portion of the length of the outer conductor of said coaxial antenna element.

22. The antenna system of claim 19 wherein at least one reactance has inductance.

23. The antenna system of claim 19 wherein at least one reactance has resistance.

24. The antenna system of claim 19 wherein at least one reactance has a transmission line stub.

25. The antenna system of claim 19 wherein at least a portion of electrically conductive material has a dissipative resistive characteristic for electromagnetic energy.

26. An antenna system for electromagnetic energy having a feedpoint first electrical connection to an outside conductor of a coaxial antenna element while having at least one reactance electrically connected to at least one end of said coaxial antenna element with said reactance connected operatively to an inside conductor of said coaxial antenna element with said feedpoint having a second electrical connection to an electrically conductive reference plane.

27. The antenna system of claim 26 wherein at least one reactance has capacitance.

28. The antenna system of claim 26 wherein at least one reactance has inductance.

29. The antenna system of claim 26 wherein at least one reactance has resistance.

30. The antenna system of claim 26 wherein at least one reactance has a transmission line stub.

31. The antenna system of claim 26 wherein at least a portion of electrically conductive material has a dissipative resistive characteristic for electromagnetic energy.

32. The antenna system of claim 26 wherein at least one antenna element is operatively coupled to a separate conductive surface along at least a portion of the length of said antenna element.

33. The antenna system of claim 26 wherein at least one reference plane is a separate conductive antenna element.

34. The antenna system of claim 26 wherein at least one reference plane is an electrical ground plane.