Reflectarray antenna system
AssigneeNorthrop Grumman Systems Corporation
InventorsTHOMAS H. HAND, MICHAEL E. COOLEY, DAVID SALL, GARY L. KEMPIC
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Abstract
A reflectarray antenna system includes an antenna feed configured to at least one of transmit and receive a wireless signal occupying a frequency band. The system also includes a reflector having a reflectarray. The reflectarray includes a plurality of reflectarray elements, where each of the reflectarray elements includes a dipole element. The dipole element of at least a portion of the plurality of reflectarray elements comprises a crossed-dipole portion and a looped-dipole portion. The plurality of reflectarray elements can be configured to selectively phase-delay the wireless signal to provide the wireless signal as a coherent beam.
Claims20
A reflectarray antenna system comprising:
- a first antenna feed configured to at least one of transmit and receive a first wireless signal occupying a first frequency band;
- a second antenna feed configured to at least one of transmit and receive a second wireless signal occupying a second frequency band;
- and
- a reflector comprising a reflectarray and being configured to provide the first wireless signal and the second wireless signal as a first coherent beam and a second coherent beam, respectively, the reflectarray being configured to selectively phase-delay at least one of the first and second wireless signals to provide the respective at least one of the first and second coherent beams.
A reflectarray antenna system comprising:
- an antenna feed configured to at least one of transmit and receive a wireless signal occupying a frequency band;
- a reflector comprising a reflectarray, the reflectarray comprising a plurality of reflectarray elements arranged on a substrate, each of the reflectarray elements comprising a dipole element, wherein the dipole element of at least a portion of the plurality of reflectarray elements comprises, on the same surface of the substrate, a crossed-dipole portion and a looped-dipole portion, the plurality of reflectarray elements being configured to selectively phase-delay the wireless signal to provide the wireless signal as a coherent beam.
Dependencies are inferred from the claim text.