Abstract: A configurable bipolarization reflector comprises intersecting first and second sets of parallel composite lines (LHi, LVj), a line segment between two consecutive intersection points (Iij) of the two sets containing a component (12) having conductivity that can be switched by a switching signal (V). The components are disposed on the line segments so that a switching signal applied at a point of intersection (P1k, P1k?, P1k?) of said sets switches the conductivity of the components of a group of segments defining a reflector area (Z) of given reflectivity.

Abstract: A configurable bipolarization reflector comprises intersecting first and second sets of parallel composite lines (LHi, LVj), a line segment between two consecutive intersection points (Iij) of the two sets containing a component (12) having conductivity that can be switched by a switching signal (V). The components are disposed on the line segments so that a switching signal applied at a point of intersection (P1k, P1k?, P1k?) of said sets switches the conductivity of the components of a group of segments defining a reflector area (Z) of given reflectivity.

Abstract: The invention relates to a printed antenna comprising a dielectric substrate (CS1, CS2) supporting feeder lines (LA1, LA2) and first and second T-shaped dipoles (D1, D2) of different sizes for dual-band operation. Each dipole includes a stem (J1, J2) and two radiating arms (B1, B2) separated by a coupling slot (FC1, FC2) made in the stem. For compactness of the antenna, the stems are partly superimposed, the coupling slots are aligned and a decoupling cut-out (ED) is made in the second dipole so as to uncover the coupling slot of the first dipole, by virtue of their superposition. The substrate can comprise one, two or three layers. Plural antennas can constitute an antenna network used as a base element in one-dimensional or two-dimensional network.

Abstract: The invention relates to a printed antenna comprising a dielectric substrate (CS1, CS2) supporting feeder lines (LA1, LA2) and first and second T-shaped dipoles (D1, D2) of different sizes for dual-band operation. Each dipole includes a stem (J1, J2) and two radiating arms (B1, B2) separated by a coupling slot (FC1, FC2) made in the stem. For compactness of the antenna, the stems are partly superimposed, the coupling slots are aligned and a decoupling cut-out (ED) is made in the second dipole so as to uncover the coupling slot of the first dipole, by virtue of their superposition. The substrate can comprise one, two or three layers. Plural antennas can constitute an antenna network used as a base element in one-dimensional or two-dimensional network.

Abstract: Configurable antenna, adapted to transmit or to receive at least one beam of electromagnetic radiation in a direction and over an angular width that are adjustable. The antenna includes an antenna that is omnidirectional about a given axis z. The omnidirectional antenna comprises at least one biconical antenna and the configurable antenna further comprises controllable reflectivity discrete reflector elements passing through the cones of the omnidirectional antenna without electrical contact and disposed on at least one circle centered on the given axis z. The antenna is applicable to mobile telephony.

Abstract: The invention relates to a printed antenna comprising two planar radiating elements (25, 45) which are more or less stacked on top of each other. A first reactive coupling (5, 15) layout can excite one of the radiating elements (25, 45), said first reactive coupling layout comprising at least one feed line (6, 7) and a conductive ground plane (15) which is equipped with at least one coupling slot (16, 17). Moreover, the antenna comprises a second reactive coupling (25, 35) layout which can excite the other radiating element. The invention is characterised in that the radiating elements (25, 45) are provided with surface areas that are sufficiently similar so that the first reactive coupling layout produces a simultaneous coupling of the two radiating elements (25, 45).

Abstract: An electromagnetic probe having at least one assembly including in combination: a coaxial type connectio, a ground plane connected to the outer sheath of the coaxial connection, a reflector cone placed facing the ground plane and shaped to define impedance that is at least substantially constant along its profile, the reflector being electrically isolated, and a dielectric medium interposed at least in part between the reflector cone and the ground plane.

Abstract: Configurable antenna, adapted to transmit or to receive at least one beam of electromagnetic radiation in a direction and over an angular width that are adjustable. The antenna includes an antenna that is omnidirectional about a given axis z. The omnidirectional antenna comprises at least one biconical antenna and the configurable antenna further comprises controllable reflectivity discrete reflector elements passing through the cones of the omnidirectional antenna without electrical contact and disposed on at least one circle centered on the given axis z. The antenna is applicable to mobile telephony.

Abstract: The invention relates to a printed antenna comprising two planar radiating elements (25, 45) which are more or less stacked on top of each other. A first reactive coupling (5, 15) layout can excite one of the radiating elements (25, 45), said first reactive coupling layout comprising at least one feed line (6, 7) and a conductive ground plane (15) which is equipped with at least one coupling slot (16, 17). Moreover, the antenna comprises a second reactive coupling (25, 35) layout which can excite the other radiating element. The invention is characterised in that the radiating elements (25, 45) are provided with surface areas that are sufficiently similar so that the first reactive coupling layout produces a simultaneous coupling of the two radiating elements (25, 45).

Abstract: The printed antenna is compact and comprises, superposed by dielectric layers, two feed lines having perpendicular microstrips, a ground plane, a first radiating element including a plurality of conductive strips perpendicular to a first coupling slot formed in the ground plane, and a second radiating element superposed on the first element and including a plurality of conductive strips crossing by superposition the first strips and perpendicular to a second coupling slot formed in the ground plane. For example, the elements radiate in the DCS-1800 and GSM radiotelephone frequency bands with perfectly orthogonal fields.

Abstract: The printed antenna is compact and comprises, superposed by dielectric layers, two feed lines having perpendicular microstrips, a ground plane, a first radiating element including a plurality of conductive strips perpendicular to a first coupling slot formed in the ground plane, and a second radiating element superposed on the first element and including a plurality of conductive strips crossing by superposition the first strips and perpendicular to a second coupling slot formed in the ground plane. For example, the elements radiate in the DCS-1800 and GSM radiotelephone frequency bands with perfectly orthogonal fields.

Abstract: The present invention provides an electromagnetic probe, comprising at least one assembly comprising in combination:

Abstract: The invention relates a printed bi-polarization acrial comprising first, second and third superimposed substrate lates (1, 2. 3); a first metal deposit (4), situated on the external face of said first substrate plate (1) which defines at least one first radiating element (5, 6) of the dipole type, in the form of a T, the horizontal bar of said T being constituted by two radiating lateral strands separated by a coupling slit; a first power supply line (7) pursuant to a first polarization, situated between said first and second substrate plates (1, 2) and supplying power to said at least one first radiating element (5, 6); a second metal deposit (8).

Abstract: A planar printed-circuited antenna for the transmission and/or reception of microwave signals has a first conductive element or patch substantially parallel to a ground plane, a first dielectric substrate separating the first patch from the ground plane, supply structure for the antenna, and at least one second patch which substantially identical to the first patch. The second patch is superimposed on the first patch and is substantially parallel to the ground plane. A second dielectric substrate separates the first and second patches, and at least one first short-circuit connects the first and second patches to each other. According to the invention, at least one of the first and second patches includes at least one slot.

Abstract: This invention relates to a flat printed antenna for transmission and/or reception of microwave signals of the type that includes particularlya plate of dielectric substratean earth plane formed by a first conductor layer deposited on a first face of the plate of dielectric substrate,a radiating element (30) formed by a second conductor layer deposited on a second face of the plate of dielectric substrate,means of feeding the antennaThis antenna has a fundamental mode, in which it generates a radiation pattern having a maximum in the direction perpendicular to the plane containing the radiating element, and at least one higher mode, in which it generates a radiation pattern with low elevation,According to the invention, the radiating element has at least one slot (31 to 34) allowing the control of the resonance frequency of a chosen higher mode.

Abstract: An antenna for the transmission and/or reception of microwave signals comprises a substrate plate, at least one feeder line located on a first face of the substrate plate and a conductive deposit located on a second face of the substrate plate. The conductive deposit defines a main surface forming a ground plane for the feeder line and at least one radiating finger. The radiating finger has a first end connected to the main surface and a free end extending at least partially along one side of the main surface to form a longitudinal space between the radiating finger and the main surface. The longitudinal space forms a coupling slot for the antenna.