US 12,646,852 B2 · Highly efficient parabolic antenna configured with corrective meta surface structure

Abstract

Corrective meta surface lens is used to reduce the illumination and spill-over losses and improve the overall efficiency of a parabolic antenna when is horn-mounted, and/or top-mounted, and/or deposited directly on the frontal reflector surface of the parabolic antenna. For the horn-mounted model, a meta surface lens is placed in front of or in the aperture of the feed horn to reduce side lobe level, which results in lower parabolic antenna spill-over losses and overall efficiency improvement by more than 40% (1.5 dB). For the top-mounted model, the meta surface lens is mounted on top of (or above) the parabolic reflector, which results in reduction in illumination losses, and greater than 70% (2.5 dB) efficiency. The meta surface lens has a wideband response, is lightweight and has a lattice structure which makes it a great candidate for withstanding wind forces.

Claims31

Dependent claims

A highly efficient parabolic antenna, comprising:

a parabolic antenna including:
a parabolic reflector member having a frontal parabolic reflecting surface, and
a feed horn antenna suspended at a focal point of said frontal parabolic reflecting surface of said parabolic reflector member, said feed horn antenna having an aperture, and
a corrective meta surface structure secured at a predetermined position relative said parabolic antenna, said predetermined position being selected from a group consisting of a position in front of said frontal parabolic reflecting surface of said parabolic reflector member, in front of said feed horn antenna, within said aperture of said feed horn antenna, directly at said frontal parabolic reflecting surface of said parabolic reflector member, and a combination thereof;
said corrective meta surface structure functioning as a corrective lens;
wherein said corrective meta surface structure is formed as a singular-layer structure, or as a multi-layer structure.

3 more elements

A method of attaining a high efficiency of a parabolic antenna, comprising:

fabricating a parabolic antenna with a parabolic reflector member having a frontal parabolic reflecting surface and a feed horn antenna suspended at a focal point of said parabolic reflector member, said feed horn antenna having an aperture, and
fabricating and securing a corrective meta surface structure at a predetermined position relative said parabolic antenna, said predetermined position being selected from a group consisting of a position in front of said frontal parabolic reflecting surface of said parabolic reflector member, in front of said feed horn antenna, within said aperture of said feed horn antenna, directly at said frontal parabolic reflecting surface of said parabolic reflector member, and a combination thereof;
configuring said corrective meta surface structure with a plurality of unit cells interconnected with one another, said corrective meta surface structure functioning as a corrective lens;
and
fabricating said corrective meta surface structure in a configuration selected from a group of a rectangular configuration, a curved configuration, an annular configuration, as a singular-layer structure, or as a multi-layer structure, and a combination thereof.

2 more elements

Dependencies are inferred from the claim text.

Highly efficient parabolic antenna configured with corrective meta surface structure

Life of this patent

Highly efficient parabolic antenna configured with corrective meta surface structure

Life of this patent

Abstract

Claims31