The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 09, 2012
Filed:
Jan. 15, 2008
David Hayes, Winchester, GB;
Richard Brooke Keeton, Beaulieu, GB;
David Hayes, Winchester, GB;
Richard Brooke Keeton, Beaulieu, GB;
Plasma Antennas Limited, Harwell, Oxfordshire, GB;
Abstract
A displaced feed antenna which has a spaced conducting plate construction that incorporates electronically selectable feed points with associated antenna beam positions, and which comprises (i) a set of one or more beamforming configurations composed of layered, interlinking spaced conducting plates and conducting boundaries that are separated by cavities containing dielectric material or free space; (ii) a set of one or more internal focusing devices for each beamforming configuration to route radio frequency energy to or from the displaced feed points in receive and transmit modes respectively; (iii) a linear or curved array of displaced feeds for each beamforming configuration for coupling radio frequency energy into, or from, the cavity between the plates; (iv) a selection device to allow definable overlapping regions of the focussing devices to be illuminated for each beamforming configuration; and (v) array elements for each beamforming configuration between spaced conducting plates to free space, allowing either single polarizations or dual polarization operation.