Patent
Horn reflect array
TLDR
In this paper, a horn reflect array antenna system and a method for producing a signal using a horn reflective array antenna is presented. But the system is not suitable for the use of a large number of antennas.Abstract:
In summary the present invention discloses a horn reflect array antenna system and a method for producing a signal using a horn reflect array antenna. The system comprises at least one reflective element illuminated by an incident radio frequency (RF) signal from a feed horn, the reflective element reflecting a portion of the incident RF signal as a portion of a reflected RF signal, and at least one phase shifting device, each phase shifting device coupled to a corresponding reflective element, wherein a beam pattern of the reflected RF signal is altered when the phase shifting element changes the phase of the portion of the reflected RF signal. A method in accordance with the present invention comprises illuminating a reflector with an RF signal emanating from a feed horn, wherein the reflector comprises at least one reflective element, reflecting at least a portion of the RF signal from the reflective element, wherein the reflective element comprises a phase shifting device, and changing a phase of the portion of the reflected RF signal with the phase shifting device, therein altering the radiation pattern of the reflected RF signal.read more
Citations
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References
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Patent
Microstrip reflect array for satellite communication and radar cross-section enhancement or reduction
TL;DR: In this article, a flat reflectarray is associated with a primary r.f. transmitter/receiver structure disposed at a focal area or spot of the reflectarray having an appropriately phased aperture (e.g., parabolic).
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Integrated microelectromechanical phase shifting reflect array antenna
TL;DR: In this article, a phase shifting array antenna includes antenna elements that have a non-electrically conductive substrate having first and second sides, an electricallyconductive patch formed on the first side of the substrate, and a ground plane forming on the second side of a nonconductive substrate, where at least two pairs of integrated microelectromechanical switches are arranged diametrically opposed across the patch.
Patent
Beam scanning reflectarray antenna with circular polarization
John Huang,Ronald J. Pogorzelski +1 more
TL;DR: In this article, a novel means of scanning a circularly polarized reflectarray antenna was proposed, where the phase in the aperture can be made to vary linearly in any desired direction and also to produce a radiated beam normal to the constant phase surface.
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Reflectarray antenna for communication satellite frequency re-use applications
TL;DR: In this article, a planar line or surface array of reradiating elements of two different polarizations is used to provide a phase shift which causes a collimated beam incident on the array to result in reradiation or reflection of energy in the form of a beam converging at a focal point.