Abstract: Discloses is an unpowered transparent antenna that can be installed to reduce or remove a radio wave shadow area such as an interior even without power. In order to achieve the objectives, an unpowered transparent antenna includes: a first conductive layer having a mesh structure; and a second conductive layer having a mesh structure and positioned on the bottom of the first conductive layer, in which an aperture ratio of the first and second conductive layers is 50% or more.

Abstract: An antenna structure according to an embodiment of the present disclosure includes a dielectric layer, and an antenna unit disposed on a top surface of the dielectric layer. The antenna unit includes a radiator including convex portions and concave portions, a transmission line including a first transmission line and a second transmission line that extend in different directions to be connected to the radiator, and a parasitic element disposed to be adjacent to the transmission line and electrically and physically separated from the transmission line and the radiator. A length of the parasitic element in an extension direction of the transmission line is from 45% to 70% of a half wavelength (?/2) at a maximum resonance frequency from the antenna unit.

Abstract: An antenna structure according to an embodiment of the present disclosure includes a dielectric layer, and an antenna conductive layer disposed on a top surface of the dielectric layer. The antenna conductive layer includes a radiator, first and second transmission lines extending in different directions to be connected to the radiator, an upper parasitic element adjacent to an upper portion of the radiator in a planar view, and a lower parasitic element adjacent to a lower portion of the radiator, the first transmission line and the second transmission line in the planar view.

Abstract: An antenna device according to an embodiment of the present invention includes a dielectric layer, a first electrode layer disposed on a top surface of the dielectric layer, the first electrode layer including a radiation pattern, a second electrode layer disposed on a bottom surface of the dielectric layer, and a flexible circuit board connecting the first electrode layer and the second electrode layer with each other along a lateral portion of the dielectric layer. Efficiency of grounding and noise removing may be improved by the flexible circuit board.

Abstract: A film antenna according to an embodiment of the present invention includes a dielectric layer, and a plurality of radiation patterns on a top surface of the dielectric layer. The plurality of radiation patterns has different resonance frequencies on the same plane. The radiation patterns of different frequency bands are arranged in the film antenna to provide a broadband communication.

Abstract: A film antenna according to an embodiment of the present invention includes a dielectric layer, and a plurality of radiation patterns commonly arranged on an upper surface of the dielectric layer and forming a phased array. Directivity and gain property of a signal may be improved. The film antenna may be applied to a display device including a mobile communication device capable of transmitting and receiving in 3G or higher, for example, 5G of high-frequency band, to improve radiation properties and optical properties such as transmittance.

Abstract: A film antenna according to an embodiment of the present invention includes a dielectric layer, and a vertical radiation pattern and a horizontal radiation pattern on an upper surface of the dielectric layer. The vertical radiation pattern and the horizontal radiation pattern are arranged together on the same plane. Multi-axis radiation properties may be implemented in the same film by the vertical radiation pattern and the horizontal radiation pattern.

Abstract: A film antenna according to an embodiment of the present invention includes a dielectric layer, a pad disposed on the dielectric layer and an antenna pattern inclined with respect to the pad on the dielectric layer. A generation of a side lobe is prevented by the inclined orientation of the antenna pattern. A radiation in a ?Z-axis direction may be suppressed to enhance a signal intensity of a radiation pattern and prevent a signal loss. A display device including the film antenna is also provided.

Abstract: A film antenna according to an embodiment of the present invention includes a dielectric layer, an antenna pattern including a mesh structure on a top surface of the dielectric layer, and a dummy pattern on a top surface of the dielectric layer. The dummy pattern includes the same mesh structure as that of the antenna pattern. Optical properties are improved by the same mesh structure of the antenna pattern and the dummy pattern.