Apparatus for absorbing multi-band electromagnetic wave by using resistive pattern, and generation method thereof
AssigneeElectronics and Telecommunications Research Institute
InventorsDong Uk SIM, Sang Il KWAK, Jong Hwa KWON
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Abstract
A structure of absorbing multi-band electromagnetic waves, having an effective function of absorbing electromagnetic waves while maintaining a precise alignment of two or more films includes a first dielectric portion, a first resistive pattern portion, a second dielectric portion, and a second resistive pattern portion. An apparatus and method for freely controlling an electromagnetic wave absorbance area, which has an effect of efficiently absorbing or reducing electromagnetic waves of various frequency bands, thereby leading to ease in maintenance and repair.
Claims12
An apparatus for absorbing multi-band electromagnetic waves by using a resistive pattern, the apparatus comprising:
- a first dielectric portion comprising two sides, between which a dielectric is filled, wherein at least one of the two sides is a metal conductor;
- a first resistive pattern portion, which comprises a first printed film, and on top of the first printed film, comprises a first resistive pattern layer where a plurality of unit cells made of a resistive material is arranged at regular intervals;
- a second dielectric portion comprising two sides, between which a dielectric is filled, wherein at least one of the two sides is the first resistive pattern layer, and the other side is a second printed film;
- and
- a second resistive pattern portion, which comprises the second printed film, and on top of the second printed film, comprises a second resistive pattern layer where a plurality of unit cells made of a resistive material is arranged at regular intervals,
- wherein electromagnetic bandgap unit cells are formed in a predetermined pattern, which are aligned based on a z axis so that x and y-axis values of one center point of the plurality of unit cells comprised in the first resistive pattern portion are matched to x and y-axis values of one center point of the plurality of unit cells comprised in the second resistive pattern portion.
A method for absorbing multi-band electromagnetic waves by using a resistive pattern, the method comprising:
- generating a first dielectric layer comprising two sides, between which a dielectric is filled, wherein at least one of the two sides is a metal conductor;
- generating, on top of the first printed film, a first resistive pattern layer where a plurality of unit cells made of a resistive material is arranged at regular intervals;
- generating a second dielectric layer comprising two sides, between which a dielectric is filled, wherein at least one of the two sides is the first resistive pattern layer, and the other side is a second printed film;
- generating a second resistive pattern layer, which comprises the second printed film, and on top of the second printed film, comprises a second resistive pattern layer where a plurality of unit cells made of a resistive material is arranged at regular intervals;
- forming a plurality of electromagnetic bandgap unit cells, which are aligned based on a z axis so that x and y-axis values of one center point of the plurality of unit cells comprised in the first resistive pattern portion are matched to x and y-axis values of one center point of the plurality of unit cells comprised in the second resistive pattern portion;
- and
- generating an apparatus for absorbing multi-band electromagnetic waves, which has a predetermined pattern comprising the plurality of the formed electromagnetic bandgap unit cells.
Dependencies are inferred from the claim text.