Titanium antenna

• US 20040012535A1
• Filed: 04/24/2003
• Published: 01/22/2004
• Est. Priority Date: 04/26/2002
• Status: Abandoned Application

• Current Assignee: RMI Delaware, Inc. (Howmet Aerospace, Inc.)
• Original Assignee: RMI Delaware, Inc. (Howmet Aerospace, Inc.)
• Inventors: Stone, Michael J.
• Application Number:
  US10/423,811
• Publication Number:
  US 20040012535A1
• Time in Patent Office: Days
• US Class Current: 343/818
• CPC Class Codes: H01Q 19/30 the primary active element being centre-fed and substantially straight, e.g. Yagi antenna

Abstract

An antenna for radiating and receiving electromagnetic radiation constructed substantially of Titanium, and in particular Grade 2 or Grade 4 Titanium.

Claims

1. An antenna for radiating and receiving magnetic radiation consisting essentially of titanium metal.

2. The antenna of claim 1 which has a longitudinal boom and a plurality of spaced elements extending transversely from said boom.

3. The antenna of claim 1 which has standing wave ratio characteristics which are superior to a structurally and dimensionally similar aluminum or aluminum alloy antenna.

4. The antenna of claim 3 wherein said superior standing wave ratio characteristics are in a frequency range of from about 145.00 MHz to about 145.50 MHz.

5. The antenna of claim 1 which has impedance which is greater than a structurally and dimensionally similar aluminum or aluminum alloy antenna.

6. The antenna of claim 5 wherein said impedance is greater than the aluminum antenna in a frequency of from about 144.00 MHz to about 144.25 MHz and from about 145.70 MHz to about 146.50 MHz.

7. The antenna of claim 1 which has resistance which is greater than a structurally and dimensionally similar aluminum or aluminum alloy antenna.

8. The antenna of claim 7 wherein resistance is greater than the aluminum or aluminum alloy antenna at a frequency of from about 144.00 MHz to about 144.25 MHz to about 144.25 MHz and from aobut 145.75 MHz to about 147.00 MHz.

9. The antenna of claim 1 which has reactance which is greater than a structurally and dimensionally similar aluminum or aluminum alloy antenna.

10. The antenna of claim 9 wherein reactance is greater than the aluminum or aluminum alloy antenna at a frequency of from about 144.25 to about 144.75 MHz 146.00 to about 146.25 MHz.

11. The antenna of claim 1 which has capacitance which is greater than a structurally and dimensionally similar aluminum or aluminum alloy antenna.

12. The antenna of claim 11 wherein capacitance is greater than the aluminum or aluminum alloy antenna at a frequency from about 146.00 to about 146.25 MHz and from about 147.25 to about 147.50 MHz.

13. The antenna of claim 1 which has a inductance which is greater than a structurally and dimensionally similar aluminum or aluminum alloy antenna.

14. The antenna of claim 13 wherein inductance is greater than the aluminum or aluminum alloy antenna at a frequency of from about 144.25 to about 144.75 MHz.

15. The antenna of claim 1 wherein the antenna consists essentially of a Grade 2 Titanium metal.

16. The antenna of claim 3 wherein the antenna consists essentially of Grade 2 Titanium metal and the second antenna consists essentially of an aluminum alloy.

17. A YAGI antenna having a boom;

and a driver element, a reflector element and a plurality of dipole elements mounted on the boom and extending generally perpendicular thereto, wherein said boom, driver elements, reflector element and dipole elements are formed substantially of Grade 2 or Grade 4 Titanium.

18. The antenna of claim 17 wherein the Grade 2 Titanium has a minimum tensile strength of 50 ksi and a yield of between 40 ksi and 65 ksi at 20% elongation.

19. The antenna of claim 17 wherein the Grade 4 Titanium has a minimum tensile strength of 80 ksi and a yield of between 70 ksi and 95 ksi at 15% elongation.