Metamaterial structure, metamaterial-type transparent heater, and radar apparatus using metamaterial-type transparent heater
AssigneeUniversity-Industry Cooperation Group of Kyung Hee University
InventorsSun Kyung Kim, Young Bin Kim, Eun Joo Lee
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Abstract
A metamaterial structure according to one embodiment of the present disclosure is formed in a metal pattern that allows microwave transmittance to approach the transmittance of air in a specific frequency band of microwaves. In this case, the metal pattern is provided in an electrically interconnected form to perform a heating function.
Claims15
A metamaterial structure formed in a metal pattern, wherein the metal pattern is provided in an electrically interconnected form to perform a heating function,
- wherein the metal pattern is formed so that, for both polarizations orthogonal to each other in a specific frequency band of microwaves, a relationship between a metal filling fraction (E) at which a metal is filled per unit area of the metal pattern and a microwave transmittance (T) satisfies an equation of T>(1-E),
- wherein the metal pattern is provided in a structure in which a plurality of unit structures are continuously connected, and one unit structure is disposed per unit area of the metal pattern and is electrically interconnected with other adjacent unit structures,
- wherein at least one electric dipole induced by a partial gap of the metal pattern is provided in the unit structure,
- wherein the specific frequency band of microwaves is changed by selectively changing structural variables of the unit structure, and
- wherein the structural variables comprise at least one of a size of the unit structure, a metal thickness of the unit structure, a metal width of the unit structure, a separation distance of the electric dipoles, and a size of the electric dipoles.
A metamaterial structure formed in a metal pattern, wherein the metal pattern is provided in an electrically interconnected form to perform a heating function,
- wherein the metal pattern is formed so that, for both polarizations orthogonal to each other in a specific frequency band of microwaves, a relationship between a metal filling fraction (E) at which a metal is filled per unit area of the metal pattern and a microwave transmittance (T) satisfies an equation of T>(1-E),
- wherein the metal pattern is provided in a structure in which a plurality of unit structures are continuously connected, and one unit structure is disposed per unit area of the metal pattern and is electrically interconnected with other adjacent unit structures,
- wherein the unit structure comprises a first linear pattern formed to extend in a first direction on a unit area of the metal pattern;
- a second linear pattern formed to extend in a second direction on a unit area of the metal pattern so as to intersect the first linear pattern;
- and
- a circular pattern provided in a circular shape around an intersection point of the first and second linear patterns and electrically interconnected with the first and second linear patterns.
Dependencies are inferred from the claim text.