An antenna device having a wide elevation comprises: a first antenna for emitting a first beam; a second antenna which is linearly arranged, in the plane in which the first antenna is arranged, at a 1/4 wavelength interval in the X-axis direction from the first antenna, and which emits a second beam; at least one first parasitic element linearly arranged, in the plane, at a 1/8 wavelength interval in the outer direction of the X-axis from the first antenna; at least one second parasitic element linearly arranged, in the plane, at a 1/8 wavelength interval in the outer direction of the X-axis from the second antenna; a reflector arranged in another plane spaced within a 1/2 wavelength interval from the plane; and a feeding device for supplying power of the same phase to the first antenna and the second antenna.
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