Surface for filtering a plurality of frequency bands
First Claim
1. A surface capable of filtering a plurality of frequency bands, this surface comprising a set of separate identical elementary conductive patterns, repeated according to a periodic layout on a dielectric support, the elementary pattern comprising:
- a tripole formed of three identical segments extending in a star from a center; and
two branches extending symmetrically from an intermediate point of each segment, this intermediate point being located at a same distance from the center for each of the segments, the general directions of the two branches forming an angle of approximately 120° and
defining an outward-pointing arrowhead, the branches associated with two different segments being non-secant,the elementary pattern being repeated by translation along each of the directions of the segments so that a same distance separates each end of a segment of a pattern from the center of a neighboring pattern.
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Accused Products
Abstract
The invention relates to a surface suitable for filtering a plurality of frequency bands, said surface including a set of separate identical basic conductive units (31) that are reproduced in a periodic arrangement on a dielectric substrate (10). The basic unit includes: a tripole consisting of three identical segments (12) that extend radially from a center (14); and two arms (32) that extend symmetrically from an intermediate point of each segment, said intermediate point being located at a common distance (Db) from the center (14) for each of the segments (12). The general directions of both arms form an angle of approximately 120° and define an arrowhead pointed toward the outside, wherein the arms (32) corresponding to two separate segments (12) do not intersect.
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Citations
11 Claims
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1. A surface capable of filtering a plurality of frequency bands, this surface comprising a set of separate identical elementary conductive patterns, repeated according to a periodic layout on a dielectric support, the elementary pattern comprising:
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a tripole formed of three identical segments extending in a star from a center; and two branches extending symmetrically from an intermediate point of each segment, this intermediate point being located at a same distance from the center for each of the segments, the general directions of the two branches forming an angle of approximately 120° and
defining an outward-pointing arrowhead, the branches associated with two different segments being non-secant,the elementary pattern being repeated by translation along each of the directions of the segments so that a same distance separates each end of a segment of a pattern from the center of a neighboring pattern. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification