摘要:
The disclosure provides an antenna device (1), which includes a waveguide antenna (20) having wall surfaces and for emitting a radio wave in a direction substantially perpendicular to an emission face that is one of wall surfaces of the waveguide antenna extending in an elongated direction of the waveguide antenna, a plate-shape two-dimensional opening slots for beam formation formed in the waveguide antenna on the emission face side, a power feed waveguide module (30, 50) arranged in the rear face of the waveguide antenna opposite from the emission face and for supplying electric power to the waveguide antenna, and a cylindrical radome (10) having a substantially circular cross-section of a diameter that is substantially equal to a length of the emission face in a direction perpendicular to the long-side direction so that the waveguide antenna is contained in the radome so as to be arranged at substantially the centre of the radome.
摘要:
This disclosure provides a radome (10) to be installed on an emission face side of an antenna (20), which includes an outer wall (11) having a side cross-section formed in a substantially semi-circular shape to include the antenna therein, and an inner wall (12) arranged between the outer wall and the antenna, and formed in a shape to substantially conform to the outer wall. A gap between the outer wall (11) and the inner wall (12) is wider near both ends on the circumference of the substantially semi-circular shape than at a substantially midpoint on the circumference of the substantially semi-circular shape.
摘要:
An antenna device (10) is disclosed. The antenna device (10) includes a radiator (20) for radiating an electromagnetic wave, and a dielectric body (16, 17, 18, 19) arranged on an electromagnetic wave radiating side of the radiator, and having a plurality of dielectric members arrayed in a longitudinal direction of the radiator, wherein boundaries between the plurality of adjacent dielectric members are asymmetric with respect to a virtual line perpendicularly passing through the center of the dielectric body in the longitudinal direction.