Abstract: An antenna has a predetermined operating frequency, corresponding to a predetermined wavelength, and the antenna includes: a conductive sectoral horn including one open end built into a floorplan; short-circuited radiating slots, built into the floorplan, on either side of the open end; and conductive louvres, arranged above the slots and the open end, and configured to be deployed mechanically in a continuous manner to modify a radiation pattern of the antenna. The antenna can be, for example, used in stations for testing electromagnetic fields.

Abstract: A log-periodic antenna including one set of three radiating elements with log-periodic patterns, each radiating element including a succession of radiating dipoles distributed on either side of a rectilinear electrically conducting line, perpendicular to the line, a first radiating element having a rectilinear electrically conducting line substantially perpendicular to the first face of the substrate, the first ends of the electrically conducting lines of the various radiating elements being substantially aligned along a direction parallel to the first face, the rectilinear electrically conducting lines of the second and third radiating elements being situated in a same plane as the rectilinear electrically conducting line of the first radiating element and inclined with respect to the electrically conducing line of the first radiating element, the radiating dipoles of the three radiating elements being substantially perpendicular to the plane which contains the rectilinear electrically conducting lines of th

Abstract: An antenna has a predetermined operating frequency, corresponding to a predetermined wavelength, and the antenna includes: a conductive sectoral horn including one open end built into a floorplan; short-circuited radiating slots, built into the floorplan, on either side of the open end; and conductive louvres, arranged above the slots and the open end, and configured to be deployed mechanically in a continuous manner to modify a radiation pattern of the antenna. The antenna can be, for example, used in stations for testing electromagnetic fields.

Abstract: A log-periodic antenna including one set of three radiating elements with log-periodic patterns, each radiating element including a succession of radiating dipoles distributed on either side of a rectilinear electrically conducting line, perpendicular to the line, a first radiating element having a rectilinear electrically conducting line substantially perpendicular to the first face of the substrate, the first ends of the electrically conducting lines of the various radiating elements being substantially aligned along a direction parallel to the first face, the rectilinear electrically conducting lines of the second and third radiating elements being situated in a same plane as the rectilinear electrically conducting line of the first radiating element and inclined with respect to the electrically conducing line of the first radiating element, the radiating dipoles of the three radiating elements being substantially perpendicular to the plane which contains the rectilinear electrically conducting lines of th