Radio frequency signals detection systems
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorsZachary A. Sechrist, Christopher G. Yelton, Mark B. Moran, Linda F Johnson, Joseph E. Estevez, Gretchen H. Hefley
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Abstract
The embodiments include an array in intimate adjacent contact with a substrate foundation. The array has a plurality of radio frequency (RF) witness films overlain on the substrate foundation. Each RF witness film is a unit cell defined in a three-dimensional coordinate frame of reference, and is centered at an origin of the three-dimensional coordinate frame of reference. Each RF witness film in the plurality of RF witness films is equally-spaced from adjacent RF witness films.
Claims18
A system, comprising:
- an array in intimate adjacent contact with a substrate foundation, said array having a plurality of radio frequency (RF) witness films overlain on said substrate foundation, each RF witness film in said plurality of RF witness films, comprising:
- a unit cell defined in a three-dimensional coordinate frame of reference defined by an x-axis, a y-axis, and a z-axis, said unit cell centered at an origin of said three-dimensional coordinate frame of reference, said unit cell, comprising:
- wherein each RF witness film in said plurality of RF witness films is equally-spaced from adjacent RF witness films;
- wherein each RF witness film in said plurality of RF witness films is configured to receive a direct current (DC) offset voltage.
A radio frequency signals detection system, comprising:
- an array in intimate adjacent contact with a substrate foundation, said array having a plurality of radio frequency (RF) witness films overlain on said substrate foundation;
- wherein each RF witness film in said plurality of RF witness films is equally-spaced from adjacent RF witness films;
- wherein each RF witness film in said plurality of RF witness films is electrically-connected to a direct current (DC) offset voltage;
- and
- a horn antenna configured to radiate RF signals at said array.
Dependencies are inferred from the claim text.