Passive anti-jamming antenna system
First Claim
1. In an environment comprising at least one source of a desired signal and at least one source of undesired electromagnetic energy, an antenna system comprising:
- a plurality of antenna elements, each antenna element responsive to generate an electrical signal when in the presence of an electromagnetic field; and
a partitioning structure comprising walls defining sectors;
the partitioning structure positioned between the plurality of antenna elements and the set of each desired signal and each source of undesired electromagnetic energy; and
the partitioning structure disposed so as to create at least two non-identical radio frequency fields of view, such that not all antenna elements share the same radio frequency field of view.
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Abstract
System and method for improving the interference resistance of an radio frequency (RF) antenna system through passive prescreening of the RF energy incident upon the antenna. The invention physically partitions the RF environment into two or more sectors with respect to the direction of arrival of incident energy. The power level of the RF frequencies of interest incident upon each sector is determined such that whenever the power level exceeds a given threshold, the received signal from energy incident on that sector is modified.
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Citations
23 Claims
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1. In an environment comprising at least one source of a desired signal and at least one source of undesired electromagnetic energy, an antenna system comprising:
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a plurality of antenna elements, each antenna element responsive to generate an electrical signal when in the presence of an electromagnetic field; and
a partitioning structure comprising walls defining sectors;
the partitioning structure positioned between the plurality of antenna elements and the set of each desired signal and each source of undesired electromagnetic energy; and
the partitioning structure disposed so as to create at least two non-identical radio frequency fields of view, such that not all antenna elements share the same radio frequency field of view. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 20, 21, 22, 23)
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19. In an antenna array comprising a plurality of antenna elements, a method for improving the resistance of the antenna system to interference, the method comprising:
physically partitioning the space adjacent the antenna array into at least two sectors with respect to an angle of arrival of incident electromagnetic energy such that not all antenna elements share the same radio frequency field of view.
Specification