EVANESCENT WAVE-COUPLED FREQUENCY SELECTIVE SURFACE
First Claim
Patent Images
1. A multi-layer frequency selective panel, comprising:
- a plurality of frequency selective surfaces arranged in a stack including a first frequency selective surface comprising a first plurality of elements, and a second frequency selective surface comprising a second plurality of elements;
said first frequency selective surface and said second frequency selective surface positioned a predetermined distance apart in parallel planes, and said second frequency selective surface disposed in an evanescent field region of said first frequency selective surface, wherein said multi-layer frequency selective panel has at least two resonant frequencies.
1 Assignment
0 Petitions
Accused Products
Abstract
Multi-layer frequency selective panel includes a group of frequency selective surfaces arranged in a stack. A first frequency selective surface includes a first group of slot elements, and a second frequency selective surface includes a second group of slot elements. The first frequency selective surface and the second frequency selective surface are formed of a conductive metal layer. The first frequency selective surface and the second frequency selective surface are positioned a predetermined distance apart in parallel planes. The second frequency selective surface is disposed in an evanescent field region of the first frequency selective surface.
-
Citations
14 Claims
-
1. A multi-layer frequency selective panel, comprising:
-
a plurality of frequency selective surfaces arranged in a stack including a first frequency selective surface comprising a first plurality of elements, and a second frequency selective surface comprising a second plurality of elements; said first frequency selective surface and said second frequency selective surface positioned a predetermined distance apart in parallel planes, and said second frequency selective surface disposed in an evanescent field region of said first frequency selective surface, wherein said multi-layer frequency selective panel has at least two resonant frequencies. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A method for exclusively passing two selected bands of RF energy through a multi-layer frequency selective panel, comprising:
-
positioning a first frequency selective surface and a second frequency selective surface a predetermined distance apart in parallel planes such that said second frequency selective surface is disposed in an evanescent field region of said first frequency selective surface; and setting a frequency of a first band and a frequency of a second band of said two selected bands of RF energy which are exclusively passed through said multi-layer frequency selective panel by (1) choosing a geometry and size of a plurality of elements comprising said first and second frequency selective surfaces, and (2) by selectively choosing said predetermined distance. - View Dependent Claims (11, 12, 13, 14)
-
Specification