Electromagnetic wave attenuating surface
AssigneeLockheed Corporation
InventorEdward Lovick, Jr.
Life of this patent
Estimating the term…
Abstract
Surface structures attached to a support member for reducing coupling between two antennas carried by the support member or for reducing the side lobes of a horn antenna, the structures consisting of thin metallic portions or strips partially covering dielectric material in layer form and the complete supporting structure being secured to the support member in order to present to an electromagnetic wave passing over the surface of the surface structure a surface impedance which is capacitive in nature in order to repel the electromagnetic wave away from the surface.
Claims14
A surface structure for reducing the coupling between a transmitting antenna and a receiving antenna located in the proximity of one another on a support member including:
- means for attaching said surface structure to said support member;
- said surface structure comprising thin metallic reflecting portions secured to a dielectric material in layer form and positioned between said support member and said metallic portions;
- said transmitting antenna producing an electromagnetic wave traveling along the surface of said surface structure toward said receiving antenna;
- said metallic portions being spaced apart on said dielectric material to provide said surface with both matellic and dielectric surface portions;
- and
- said metallic portions and said dielectric material being constructed to provide said surface with a wave impedance capacitive in nature to repel the wave energy from said surface and away from said receiving antenna.
An electromagnetic wave attenuating surface for reducing coupling between proximately located transmitting and a receiving antenna comprising
- a layer of dielectric material secured to a support member;
- separate portions of thin metallic reflecting material secured to the surface of said dielectric material;
- said portions being spaced apart in the direction of wave propagation from said transmitting antenna along said support member;
- said electromagnetic wave attenuating surface structure consisting of said metallic portions and said dielectric material providing a surface with a wave impedance capacitive in nature to repel said propagated wave from said attenuating surface.
Dependencies are inferred from the claim text.