Abstract: A multiple and broadband stealth structure comprises a radar absorption unit that absorbs broadband microwave, a low-frequency transmission filter unit that is stacked on an upper portion of the radar absorption unit, and an infrared radiation unit that is combined with the low-frequency transmission filter unit to selectively emit infrared ray, thereby selectively controlling the infrared emissivity of the surface to emit infrared radiation only through an atmospheric absorption window with a low infrared transmittance and to avoid the infrared detection system.

Abstract: A method for forming packaged electronic device structure includes providing a conductive leadframe. The leadframe can include a die pad and a plurality of conductive leads. The method can include coupling an electronic device to the plurality of conductive leads. The method can include providing an antenna structure, which can include a conductive pillar structure and an elongated conductive beam structure. The method can include providing a package body encapsulating the electronic device, at least portions of each conductive lead, and at least portions of the die pad. In an example, the conductive pillar structure can extend from the first package body surface to the second package body surface, the elongated conductive beam structure can be disposed adjoining the first package body surface and can be electrically connected to the conductive pillar structure, and a portion of the elongated conductive beam structure can be exposed outside of the package body.

Abstract: Proposed is a 3-dimensional resonant structure-based infrared selective emitter capable of maximizing the infrared selective radiation function by broadening the emissivity in the non-detection bands with resonance phenomena between multiple resonator units at the same time as securing infrared camouflage and energy dissipation-resultant surface thermal stability by reducing the emissivity significantly in the infrared detection band and selectively dissipating energy to the non-detection bands.

Abstract: The present invention provides an infrared selective emitter in which since infrared energy can be emitted in a desired wavelength band by adjusting a metamaterial having a repeating structure on a plane, infrared camouflage is possible by attaching to the surface of the shape of an object to be camouflaged, and at the same time, the infrared selective emitter has flexible characteristics that can be applied to curved surfaces without limitations on the shape of an object.