US 2015/0102973 A1 · REFLECTARRAY ANTENNA SYSTEM

Abstract

One embodiment describes a reflectarray antenna system. The 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 comprising 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

Dependent claims

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, 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 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.

A method for providing dual-band wireless transmission via a reflectarray antenna system, the method comprising:

one of transmitting and receiving a first wireless signal occupying a first frequency band between a first antenna feed and a reflector comprising a plurality of reflectarray elements selectively distributed on the reflector, the plurality of reflectarray elements having a geometry that is substantially transparent with respect to the first frequency band;
and
one of transmitting and receiving a second wireless signal occupying a second frequency band between a second antenna feed and the reflector, the geometry of the plurality of reflectarray elements providing selective phase-delay of the second wireless signal to provide a coherent beam associated with the second wireless signal.

Dependencies are inferred from the claim text.

Facts

Application

14/054,267Filed 15 Oct 2013

Published

16 Apr 2015

Term ends

Not estimatedThe source records don’t support an estimate.

Classification8 codes

H01Q 19/18
Using reflecting surfaces: having two or more spaced reflecting surfaces
H01Q 1/38
Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith: formed by a conductive layer on an…
H01Q 3/46
Varying the electric or magnetic characteristics of reflecting, refracting, or diffracting devices associated with the radiating element: active…
H01Q 7/00
Loop antennas with a substantially uniform current distribution around the loop and

Reflectarray antenna system

Life of this patent

Reflectarray antenna system

Life of this patent

Abstract

Claims20