Frequency selective surface (FSS)
US5208603A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 15, 1990 |
| Grant date | May 4, 1993 |
| Priority date | — |
| Expiry date | Jun 15, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q1/286
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A frequency selective surface (FSS) for incorporation into the outer skin of an aircraft, for transmitting electromagnetic energy in a predetermined frequency band. The FSS includes three layers sandwiched together with a dielectric material. Arrays of apertures are formed in the two outer layers, which are conductive. The inner layer consists of patches of conductive material. The apertures and patches are in substantial alignment with one another. The apertures and patches can have the shapes of crossed-dipoles, circles, squares, tripoles and Jerusalem crosses. In a preferred embodiment, the shapes of the apertures and patches are geometrically congruent. A dual-band FSS, having apertures and corresponding patches in two different sizes and spacings, can transmit two separate frequency bands.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.