Abstract: An antenna device according to an embodiment may include a dielectric layer, a radiator and a transmission line which are disposed on an upper surface of the dielectric layer and formed in a mesh structure. A mesh line width of the transmission line may be thicker than a mesh line width of the radiator.

Abstract: An antenna structure according to an embodiment of the present invention includes a dielectric layer, a radiator disposed on the dielectric layer, a first signal pad for supplying a first input signal to the radiator, a second signal pad for selectively supplying a second input signal to the radiator, a first transmission line connecting the first signal pad to the radiator, and a second transmission line connecting the second signal pad to the radiator. Thereby, it is possible to provide an antenna structure having improved signal efficiency and space efficiency by implementing multiple polarization characteristics with one radiator.

Abstract: An antenna device according to an embodiment of the present invention includes a dielectric layer, a radiator disposed on a top surface of the dielectric layer, a transmission line connected to a side of the radiator on the dielectric layer, a signal pad connected to an end portion of the transmission line, a ground pad disposed around the signal pad, and an auxiliary radiator extending from the ground pad to be parallel to the transmission line.

Abstract: An apparatus and a method for generating a high resolution image of a human body using a terahertz electromagnetic wave and an endoscope using the same are disclosed. In accordance with the present invention, a third laser beam and a terahertz electromagnetic wave excited by a first laser beam are radiated on a portion of a human body having a contrast agent adhered thereto to generate a high resolution image based on the terahertz electromagnetic wave reflected from the portion of the human body and a second laser beam.