Multi-function integrated radome-antenna system

• US 4,010,470 A
• Filed: 03/10/1976
• Issued: 03/01/1977
• Est. Priority Date: 03/10/1976
• Status: Expired due to Term

• Current Assignee: The United States Of America As Represented By The Secretary Of The Army
• Original Assignee: The United States Of America As Represented By The Secretary Of The Army
• Inventors: Jones, Howard S. Jr.
• Primary Examiner(s): Lieberman, Eli
• Application Number:
  US05/665,665
• Time in Patent Office: 356 Days
• Field of Search: 343/700 MS, 343/705, 343/708, 343/872, 343/846
• US Class Current: 343/708
• CPC Class Codes: H01Q 1/281 Nose antennas
• CPC Class Codes: H01Q 1/405 Radome integrated radiating elements

Abstract

A radome-integrated conformal parallel plate radiator for a projectile. Anntenna system consisting of open-ended dielectric load cavity radiators is incorporated into a dielectric radome structure for space conservation and operational versatility. A plurality of individual radiating elements, preferably in the form of wedge-shaped metallic radiators, are flush-mounted on the non-planar surface of a projectile'"'"'s radome. The interior surface of the hollow radome includes either a solid conductive ground plane deposited thereon or a wire screen mesh ground plane which is transparent to certain frequencies. Each of the exterior mounted wedge-shaped radiators are short-circuited to the ground plane, and may be individually excited and controlled to produce a desired radiation pattern.

Claims

1. A radome-integrated conformal parallel plate radiator for a projectile which comprises:

a dielectric radome shape to conform to the forward portion of said projectile, said radome having a non-planar exterior wall and an interior wall substantially parallel therewith;

metallic ground plane means formed on said interior wall of said dielectric radome; and

wedge-shaped metallic coating means deposited on said exterior wall of said dielectric radome, said wedge-shaped metallic coating means being electrically short-circuited to said metallic ground plane means.

2. The radome-integrated conformal parallel plate radiator as set forth in claim 1, wherein said metallic ground plane means comprises a solid metallic coating deposited on said interior wall of said dielectric radome.

3. The radome-integrated conformal parallel plate radiator as set forth in claim 1, wherein said metallic ground plane means comprises a wire screen mesh disposed adjacent said interior wall of said dielectric radome.

4. The radome-integrated conformal parallel plate radiator as set forth in claim 1, wherein said wedge-shaped metallic coating means comprises a first metallic wedge radiator having a base portion of a width which tapers inwardly to the width of the tip portion, said base portion being electrically connected to said metallic ground plane means by a short circuit portion on the base of said dielectric radome.

5. The radome-integrated conformal parallel plate radiator as set forth in claim 4, wherein said wedge-shaped metallic coating means further comprises a second metallic wedge radiator of a substantially congruent shape to said first metallic wedge radiator, and further comprising first and second connector means mounted on said interior wall of said dielectric radome for independently electrically exciting said first and second metallic wedge radiators.

6. The radome-integrated conformal parallel plate radiator as set forth in claim 1, wherein said wedge-shaped metallic coating means comprises a plurality of metallic wedge radiators, each of which as a base portion and a tip portion, said base portion having a width greater than said tip portion, each of said base portions being electrically connected to said metallic ground plane means by a short circuit plated portion at the base of said dielectric radome.

7. The radome-integrated conformal parallel plate radiator as set forth in claim 6, wherein said dielectric radome comprises a substantially conically shaped hollow ogive having an open end, said plurality of metallic wedge radiators being disposed about the exterior wall of said ogive with their respective base portions adjacent said open end thereof.

8. The radome-integrated conformal parallel plate radiator as set forth in claim 7, further comprising a plurality of coaxial connectors mounted on said interior wall of said ogive, each of said connectors being associated with a single one of said plurality of said metallic wedge radiators for independent electrical excitation thereof.

9. The radome-integrated conformal parallel plate radiator as set forth in claim 8, wherein said metallic ground plane means comprises a solid metallic coating deposited on said interior wall of said dielectric radome.

10. The radome-integrated conformal parallel plate radiator as set forth in claim 8, wherein said metallic ground plane means comprises a wire screen mesh disposed adjacent said interior wall of said dielectric radome.