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US 6,876,320 B2Granted
Anti-radar space-filling and/or multilevel chaff dispersers
AssigneeFractus, S.A.
InventorCarles Puente Baliarda
Life of this patent
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Abstract
The present invention consists of the particular geometry of the reflectors or dispersers which constitute the anti-radar chaff cloud. Instead of using conventional rectilinear forms, in the present invention multilevel and space-filling forms are introduced. Due to this geometric design, the properties of the radar chaff clouds improve mainly in two aspects: radar cross-section (RCS) and mean time of suspension.
Claims22
An anti-radar chaff disperser for forming a cloud of defensive countermeasures against radar, comprising,
- a structure with conducting, semiconducting or superconducting material, said structure being characterised in that at least a part thereof is a space-filling curve,
- said space-filling curve being composed of at least ten segments connected so that each segment forms an angle with any adjacent segment and said segments being smaller than a tenth part of the resonant wavelength in free space of the whole structure.
An anti-radar chaff disperser for forming a cloud of defensive countermeasures against radar, comprising:
- a conducting, semiconducting or superconducting structure, characterised in that at least a portion thereof is a multilevel structure,
- said multilevel structure including a set of polygons with the same number of sides and which are electromagnetically coupled either by means of capacitive coupling or ohmic contact, wherein a contact region between directly connected polygons is smaller than 50% of the perimeter of said polygons in at least 75% of said polygons defining said portion of said disperser, and wherein a global geometry of the multilevel structure is different than the geometry of each polygon from which it is formed.
Dependencies are inferred from the claim text.