Abstract: The present invention relates to multi-band antenna. This antenna comprises a substrate and at least one conductive layer provided with a plurality of antennas, such as PIFAs, resonating in specific frequency bands. The antennas are cascaded in order to achieve a compact antenna. The first antenna comprises a first radiating element, a first feed element connected to said first radiating element and a first ground return element and the second antennas comprises a second radiating element, a second feed element connected to said second radiating element and a second ground return element. The ground plane is printed in the same layer as the first or second antenna.

Abstract: An architecture for providing a low cost, high performance antenna for small devices In particular, a rotatable antenna that having three antenna elements; a primary element consisting of a radiating element and swiveling cylindrical head, a secondary element that consists of a feeding cylindrical pin attached vertically to an electronic device main board, and a third element that consists of a plastic part over-molding the secondary element to permit electromagnetic coupling accuracy between the primary and secondary elements.

Abstract: A circuit board assembly for an electronic device, comprising: a main circuit board provided with a ground plane and at least one electronic component for performing one or more functions of the electronic device; a wireless module board spaced apart from and over the main circuit board, the wireless module board being provided with a feed line and at least one wireless module for performing wireless operations; and an antenna element for wireless communication, the antenna element comprising a resonating element, a first connection element connected to the feed line of the wireless module board and a second connection element connected to the main circuit board.

Abstract: The invention relates to an RF reception front end block comprising a first substrate and an RF integrated front end module integrated onto a second substrate supporting a radiating part of the antenna. The antenna is in addition formed by: a first radiating part supported by the substrate and by a junction constituted by a third radiating part connecting the first radiating part and the part supported by the substrate.

Abstract: An antenna assembly mountable on a circuit board, the antenna assembly comprising a radiating part; a transmission part for feeding the radiating part the transmission part comprising a signal feed element and a ground element connectable to the circuit board; wherein: the ground element comprises an extension ground portion, folded away from a first ground portion such that it extends over the signal feed element and the first ground portion to form a ground plane cover spaced apart from the signal feed element and connectable to a ground connection of the circuit board.

Abstract: The present invention relates to a circuit comprising on a same board at least one antenna, a processing circuit and a cover covering the processing circuit. Said circuit comprises between the antenna and the cover at least one isolation element realized partly on the board and partly on the cover.

Abstract: This invention relates to a microstrip to slotline transition circuit operating on two frequency bands, in which a first filtering circuit is connected between a first portion of microstrip line and a first input/output port, said first circuit and the portion of microstrip line being adapted to accept the frequencies from a first frequency band and reject the frequencies of a second frequency band, a second filtering circuit is connected between a second portion of microstrip line and a second input/output port, said second circuit and the portion of microstrip line being adapted to accept the frequencies from the second frequency band and reject the frequencies from the first frequency band, and the slotline is sized to provide an impedance that is substantially equal to the impedance of an open circuit at the coupling zone between the microstrip line and the slotline.

Abstract: A multibeam antenna system having a substrate forming a ground plane and a lens positioned on the substrate. At least one radiating element is positioned around the lens and configured to transmit and/or receive electromagnetic wave. A switching means enables one of the at least one radiating element to be selected. The lens is constituted by a cylindrical ring whose axis is perpendicular to the substrate.

Abstract: The present invention relates to a method for producing an antenna operating in a given frequency band, from a dual-band antenna. According to the method, the dual-band antenna is a broadband slot antenna that receives and/or transmits electromagnetic signals at a first frequency and at a second higher frequency. The antenna is powered by a single power supply line, and the free end of the power supply line is connected, by a connection means that can be opened or closed, to at least one means for rejecting one of the frequencies. This invention can be used in producing generic electronic boards.

Abstract: The invention relates to a device for the transmission and/or reception of signals in an MIMO system consisting of: a MIMO module consisting of N inputs/outputs to deliver or receive N signals, where N?2, an antenna system for transmitting or receiving said N signals, said system consisting of at least one antenna with M angular sectors in a horizontal plane, said M angular sectors sensitively not covering each other and together forming a global angular sector of 360°, and switching means, mounted between the MIMO module and the antenna system, to connect P angular sectors of said multi-sector antenna, where 1?P<M, with each of the N inputs/outputs of the MIMO module according to a switching diagram determined using control means in accordance with a criterion representing the quality of the reception of signals by said device or another device.

Abstract: The present invention relates to an antenna for wireless application made from a component of an electronic device, said component being attached to the casing of the electronic device and comprising a conductive part and at least one mounting pin made of conductive material, the conductive part forming the radiating element of the antenna and the mounting pin being connected electrically to a feed line of the antenna and to a ground plane by a shunt.

Abstract: The present invention relates to a method for realizing a short-circuited slot-line on a multilayer substrate comprising at least a first conductive layer, a dielectric layer and a second conductive layer, the method comprising the following steps: etching in the first conductive layer a slot-line (2) having an electrical length L, etching in the first conductive layer, around the slot-line, a first portion of a first band having an electrical length L1?L, etching in the first conductive layer, around the slot-line, a second portion of said first band, having an electrical length L2?L, etching in the second conductive layer, a second band in the form of a loop having an electrical length L3, one end of the second band being connected to the first part of the first band and the other end of the second band being connected to the second part of the first band so as to form a conductive loop. The method is used notably to realize isolating slot-lines and slot-antennae.

Abstract: An antenna assembly for an electronic device, the antenna assembly comprising a conductive structure for housing at least a circuit board of the electronic device, an antenna formed as a slot in the conductive structure, a feeding element for feeding the antenna by electromagnetic coupling, the feeding element being positioned between the conductive structure and the circuit board and orientated to extend across said slot, the feeding element being connected to a feed line on the circuit board.

Abstract: The invention relates to a circuit for transition from a microstrip line to a slot line. According to the invention, the slot line of the transition circuit is equipped with a filter for providing on the slot line, at the crossover zone of the microstrip line and the slot line, an impedance substantially equal to the impedance of an open circuit for at least one desired frequency of the signal and an impedance substantially equal to the impedance of a short circuit for at least one undesirable frequency of the signal. Advantageously, the microstrip line is also equipped with a filter for providing on the microstrip line, at the crossover zone, an impedance substantially equal to the impedance of a short circuit for the desired frequency and an impedance substantially equal to the open-circuit impedance for the undesirable frequency.

Abstract: The invention relates to a device for transmitting and/or receiving radio frequency signals comprising at least one antenna and/or at least one filter realised in printed technology on a dielectric substrate. According to the invention, this device is equipped with means for compensating the permittivity dispersions of the substrate. For this purpose, the device comprises a circuit for measuring the dielectric permittivity of the substrate able to deliver a measured permittivity value and adjustment means able to adjust the impedance of the antenna and/or the frequency response of said filter according to said measured permittivity value.

Abstract: This invention relates to a microstrip to slotline transition circuit operating on two frequency bands, in which a first filtering circuit is connected between a first portion of microstrip line and a first input/output port, said first circuit and the portion of microstrip line being adapted to accept the frequencies from a first frequency band and reject the frequencies of a second frequency band, a second filtering circuit is connected between a second portion of microstrip line and a second input/output port, said second circuit and the portion of microstrip line being adapted to accept the frequencies from the second frequency band and reject the frequencies from the first frequency band, and the slotline is sized to provide an impedance that is substantially equal to the impedance of an open circuit at the coupling zone between the microstrip line and the slotline.

Abstract: The present invention relates to a compact slot antenna formed, in a multilayer substrate comprising, in order, at least one first conductive layer, a first dielectric layer, a second conductive layer, a second dielectric layer and a third conductive layer, of a first slot-line realised in the second conductive layer, said first slot-line being connected to the supply of the antenna, of a second and a third slot-lines realised respectively in the first and in the third conductive layers, the second and third slot-lines each being delimited by two conductive strips of which a first extremity, supply side, is interconnected by a via passing through a window realised in the second conductive layer and a second extremity connected to the second conductive layer, both conductive strips on the side of the second extremity being, either in open circuit, or in short circuit, the electrical length of the first, second and third slot-lines being a function of the wavelength at the operating frequency of the antenna.

Abstract: An antenna system for reception of channel signals form the UHF band by a receiver, including an electrically small antenna and, connected between the port connected to the antenna and that of the receiver, an active impedance matching device controlled by command signals depending on the quality of the signal received by the receiver to compensate for the impedance variations due to the environment associated with the antenna and to reject the frequencies of interfering channels adjacent to the reception channel without interfering with the active impedance matching of the antenna.

Abstract: The present invention relates to a multi-sector radiating device intended to receive and/or transmit electromagnetic signals, comprising at least, arranged on a plane substrate: a first set of antennas, with: a first antenna, a second antenna, a third antenna, arranged in the opposite manner to the first antenna, a fourth antenna, arranged in the opposite manner to the second antenna, the antennas being longitudinal radiation slot type antennas, said antennas each presenting a bisector, wherein the radiating device comprises a switching circuit capable of activating one or more of the antennas, and notably all the antennas of the first set of antennas, -and in that the bisectors of the opposed antennas on the substrate are not combined.

Abstract: The present invention relates to a printed slot-type directional antenna. The invention also relates to antenna systems formed by arranging a plurality of such antennas in an array. The flared printed slot-type directional antenna includes a substrate having a floorplan, in which the slot is etched along a profile having a longitudinal axis, and a line for supplying power to the slot, and is characterized in that the substrate comprises at least one first and one second portion which are folded along an axis that is parallel to said longitudinal axis, and which form an angle A relative to one another.