초록 ▼

The device according to an exemplary embodiment of the present invention relates to an area of wireless communication and can be used for shielding from electromagnetic radiation. The electromagnetic screen with the big surface impedance contains a flat metal reflector substrate and two lattices of

The device according to an exemplary embodiment of the present invention relates to an area of wireless communication and can be used for shielding from electromagnetic radiation. The electromagnetic screen with the big surface impedance contains a flat metal reflector substrate and two lattices of capacitor type that are shifted from each other on a share of the period in parallel and located above the reflector substrate. At least one of lateral edges of the lattices has an electric connection with an edge of the reflector substrate.

대표청구항 ▼

1. An electromagnetic screen having a high surface impedance, the screen comprising: a reflector substrate, wherein the reflector substrate has a rectangle shape, wherein the rectangle shape is defined by four lateral edges;a lattice structure comprising a first lattice and a second lattice parallel

1. An electromagnetic screen having a high surface impedance, the screen comprising: a reflector substrate, wherein the reflector substrate has a rectangle shape, wherein the rectangle shape is defined by four lateral edges;a lattice structure comprising a first lattice and a second lattice parallel to the first lattice, the lattice structure being located above the reflector substrate, the lattice structure being arranged in a two period lattice,wherein at least one edge of the four lateral edges has at least one electric connection with a respective edge of the lattice structure, andwherein portions of the lattice structure other than the respective edges do not have a direct electric connection with the reflector substrate. 2. The electromagnetic screen of claim 1, wherein the electric connection comprises a metal layer located on at least one opposite face surface of the screen. 3. The electromagnetic screen of claim 1, wherein the lattice structure comprises a two-period lattice and wherein the electric connection comprises a metal layer that is coupled to a face surface of the screen. 4. The electromagnetic screen of claim 1, wherein the edge of the reflector substrate is a peripheral edge of the reflector substrate. 5. An electromagnetic screen, comprising: a reflector substrate, wherein the reflector substrate has a rectangle shape, wherein the rectangle shape is defined by four lateral edges;a first dielectric layer on the reflector substrate;a first thin metal layer on the first dielectric layer, the first thin metal layer comprising a first plurality of pieces spaced apart in a two period lattice;a second dielectric layer on the first thin metal layer;a second thin metal layer being arranged in parallel with the first thin metal layer and on the second dielectric layer, the second thin metal layer comprising a second plurality of pieces spaced apart from each other by a first distance; anda first connector to connect a first edge of the first thin metal layer to at least one lateral edge of the four lateral edges of the reflector substrate, the first connector being disposed on a first surface of the first dielectric layer,wherein among the first plurality of pieces in the first thin metal layer, those pieces not located on edges of the first thin metal layer do not have a direct electric connection with the reflector substrate. 6. The electromagnetic screen of claim 5, further comprising a second connector to connect a second edge of the first thin metal layer to a second edge of the reflector substrate, the second connector being disposed on a second surface of the first dielectric layer, wherein the second surface of the first dielectric layer opposes the first surface of the first dielectric layer. 7. The electromagnetic screen of claim 6, wherein each of the first connector and the second connector comprise a metal layer. 8. The electromagnetic screen of claim 6, further comprising: a third connector to connect a third edge of the first thin metal layer to a third edge of the reflector substrate, the third connector being disposed on a third surface of the first dielectric layer; anda fourth connector to connect a fourth edge of the first thin metal layer to a fourth edge of the reflector substrate, the fourth connector being disposed on a fourth surface of the first dielectric layer;wherein the third surface of the first dielectric layer opposes the fourth surface of the first dielectric layer. 9. The electromagnetic screen of claim 8, wherein each of the first connector, the second connector, the third connector, and the fourth connector comprise a metal layer. 10. The electromagnetic screen of claim 5, wherein each of the first plurality of pieces and the second plurality of pieces comprise metallic strips that extend across an entire width of the first dielectric layer. 11. The electromagnetic screen of claim 5, wherein each of the first plurality of pieces and the second plurality of pieces comprise metallic squares that each has a width less than a width of the first dielectric layer. 12. The electromagnetic screen of claim 5, wherein a permittivity of the first dielectric layer is greater than a permittivity of the second dielectric layer. 13. The electromagnetic screen of claim 5, wherein a thickness of the first dielectric layer is greater than a thickness of the second dielectric layer. 14. The electromagnetic screen of claim 5, wherein: the first dielectric layer is directly on the reflector substrate;the first thin metal layer is directly on the first dielectric layer;the second dielectric layer is directly on the first thin metal layer;the second thin metal layer is directly on the second dielectric layer; andthe first connector is directly on the first surface of the first dielectric layer. 15. The electromagnetic screen of claim 5, wherein adjacent ones of the first plurality of pieces are interconnected via corresponding metallic connections.