Abstract: An antenna structure is provided that improves performance of a Near Field Communication antenna by constructing a pattern for NFC in an inner center region of a pattern for a wireless charging pad. The structure includes a Printed Circuit Board including a first and a second substrate layer, where the first substrate layer includes a first and a second non-conductive area, one first conductive wire constructed in a shape surrounding the first non-conductive area, one second conductive wire constructed in a shape surrounding the second non-conductive area, and a first antenna corresponding to a first frequency band. The second substrate layer includes a third non-conductive area, a third wire surrounding the third non-conductive area, and connection wires electrically coupling the first and the second conductive wire forming a second winding. The first winding and the second winding are a second antenna corresponding to a second frequency band.

Abstract: The curved-type rigid board includes: a main sheet layer capable of maintaining a curved state with a certain curvature; a first adhesive layer formed on the main sheet layer; a sub sheet layer bonded onto the main sheet layer by the first adhesive layer while the sub sheet layer forms a line structure having diagonal lines, which do not match directions of horizontal and vertical lines of the mesh structure of the thermosetting resin of which the main sheet layer is made, in order for the main sheet layer to have rigidity to maintain the curved state; a second adhesive layer formed on the sub sheet layer; and a pattern forming layer bonded onto the sub sheet layer by the second adhesive layer.

Abstract: Provided is a three-dimensional antenna apparatus formed through a curved substrate for a portable terminal, which can be implemented by a first antenna pattern formed on one side surface of the curved substrate, a second antenna pattern formed on the other side surface opposite to the one side surface of the curved substrate, and an antenna connection pattern electrically connecting the first antenna pattern and the second antenna pattern.