Surface for filtering a plurality of frequency bands
US9065180B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 13, 2011 |
| Grant date | Jun 23, 2015 |
| Priority date | — |
| Expiry date | Jun 4, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q15/0013
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.