Abstract: The present invention addresses the problem of high costs resulting from the necessity of a variety of reflector design parameters due to area size and distance of transmission/reception and reflectors. A design method for a reflect array that transmits, to a reception region, radio waves from a base station used in communications, said method comprising: a gain setting step for setting necessary gain; a width setting step for setting a necessary beam width; a preparation step for preparing a plurality of reflectors having differing reflection directions from each other; and an arrangement step for arranging the plurality of reflector such that the beams formed by the plurality of reflectors satisfy the necessary beam width as a whole.

Abstract: The purpose of the present invention is to provide an antenna device capable of improving area quality by obtaining a good CN ratio using a high-gain antenna. This antenna device has a leaky wave antenna, a high-frequency unit, and a control unit. The leaky wave antenna has an element array. The element array has a plurality of unit elements disposed in series. The unit element has a capacitance unit and an inductance unit, and either the capacitance unit or the inductance unit is disposed in series with an adjacent other unit element. The control unit uses the beam squint of the leaky wave antenna to transmit radio waves in different directions for each of two or more different frequencies.

Abstract: Provided is a reflect array that enables reflectance at a plurality of angles of incidence while maintaining a high gain without causing a decrease in the electric field intensity of a reflector plate, and that can simplify the installation of the reflect array. In the reflect array, a plurality of first elements and a plurality of second elements are arranged on XY plane. The first elements are arranged in Y direction to form a first row of elements. The second elements are arranged in Y direction to form a second row of elements. The first element rows and the second element rows are alternately arranged in X direction. The two angles of maximum reflectance are on the same positive or negative side of X-axis.

Abstract: An array antenna having multiple elements transmits and receives electromagnetic waves via the elements. The array antenna has an electromagnetic wave control unit that inclines direction of transmission and reception of electromagnetic waves in at least a first direction by emitting electromagnetic waves of mutually different amplitudes or phases at the elements. The array antenna has multiple element columns having two or more N elements aligned at a prescribed interval d1 in a second direction substantially orthogonal to first direction. The element columns are configured as subarrays. The elements are arranged with a prescribed interval d2 therebetween in the first direction to form element rows, and the element columns are disposed offset in first direction by approximately d2/2 from elements or element columns adjacent thereto in second direction. The element column in the outermost element row has more elements than any other element column in the element row other than the outermost element row.

Abstract: To provide a dipole antenna, a polarization shared antenna, and an array antenna that are suitable for a configuration of a multilayer substrate or another three-dimensional circuit in a band at 28 GHz or higher and in a high-frequency band corresponding thereto. This dipole antenna, polarization shared antenna, and array antenna have antenna parts provided to a dielectric layer, and comprise a pseudo-coaxial line that is formed on the dielectric layer and that is connected to the antenna parts, the pseudo coaxial line having an outer conductor and a signal line.