Abstract: A distributed combiner/splitter having a first line formed of a first planar winding in a first conductive level and of a second planar winding in a second conductive level, and a second line formed of a third planar winding interdigited with the first winding in the first level, and of a fourth planar winding interdigited with the second winding in the second level, the windings having an increasing width from the outside to the inside.

Abstract: An antenna switch module between several radio-frequency transmit and/or receive paths including, between a common terminal on the antenna side and an access capacitor specific to each path, at least one diode, the number of diodes directly connected to the common terminal being odd and the number of diodes having their cathode on the common terminal side being equal, with a difference of one, to the number of diodes having their anode on the common terminal side.

Abstract: The invention concerns a process to manufacture paper coatings containing at least one mineral matter, at least one binder and water, characterised in that at least one comb polymer obtained by grafting of a least one polyalkylene oxide function on to the polymer chain, where the said chain results from the polymerisation of a least one ethylenic unsaturated monomer, is introduced into the above-mentioned composition. The paper coatings thus obtained have increased water retention and reduced Brookfield viscosity compared to the same coatings containing a water-retaining thickening agent of the prior art.

Abstract: A distributed-line directional coupler including: a first conductive line between first and second ports intended to convey a signal to be transmitted; and a second conductive line, coupled to the first one, between third and fourth ports, the second line being interrupted approximately at its middle, the two intermediary ends being connected to attenuators.

Abstract: A distributed phase shifter including: a first planar winding having its ends defining accesses in phase opposition; a second planar winding coupled with the first one and grounded by a first capacitive element; a third planar winding in a conductive level different from that receiving the first winding and electrically in series with the second winding; and a fourth planar winding, coupled with the third one in a conductive level different from that receiving the second winding, first ends of the third and fourth windings being connected by a capacitive element and their second ends being connected by another capacitive element, their first and second respective ends defining accesses in phase quadrature.

Abstract: An antenna including a planar conductive track, which follows, from a first end intended to be connected to a radiofrequency transceiver circuit to a second free end, a serpentine-shaped pattern having at least three primary parallel sections of the same length, connected, except for a first one and for a last one, by their respective ends to one of the ends of a preceding section and of a next section by secondary rectilinear sections having the same length, perpendicular to the primary sections.

Abstract: A non-directional coupler including a semiconductor junction in series with a capacitor, the semiconductor junction being formed so that the threshold frequency short of which it behaves as a rectifier is smaller than the coupler's operating frequency.

Abstract: A coupler of distributed type including a first conductive line carrying a main signal between two end terminals, a second conductive line coupled to the first one and between two terminals of which flows a sampled signal, proportional to the main signal, and two capacitors respectively connecting the two terminals of each of the lines.

Abstract: A non-directional coupler including a semiconductor junction in series with a capacitor, the semiconductor junction being formed so that the threshold frequency short of which it behaves as a rectifier is smaller than the coupler's operating frequency.

Abstract: A distributed combiner/splitter having a first line formed of a first planar winding in a first conductive level and of a second planar winding in a second conductive level, and a second line formed of a third planar winding interdigited with the first winding in the first level, and of a fourth planar winding interdigited with the second winding in the second level, the windings having an increasing width from the outside to the inside.

Abstract: A distributed phase shifter including: a first planar winding having its ends defining accesses in phase opposition; a second planar winding coupled with the first one and grounded by a first capacitive element; a third planar winding in a conductive level different from that receiving the first winding and electrically in series with the second winding; and a fourth planar winding, coupled with the third one in a conductive level different from that receiving the second winding, first ends of the third and fourth windings being connected by a capacitive element and their second ends being connected by another capacitive element, their first and second respective ends defining accesses in phase quadrature.

Abstract: A directional coupler having a first structure with distributed lines having a first conductive line intended to convey a main signal between two end terminals and having a second conductive line, coupled to the first one, intended to convey a secondary signal proportional to the main signal; and a second structure with local elements including, between a first terminal of the coupler intended to extract the secondary signal and a first end of the second line, two attenuators in series between which is interposed a low-pass filter and, between a second terminal of the coupler and the second end of the second line, at least one attenuator.

Abstract: An antenna switch module between several radio-frequency transmit and/or receive paths including, between a common terminal on the antenna side and an access capacitor specific to each path, at least one diode, the number of diodes directly connected to the common terminal being odd and the number of diodes having their cathode on the common terminal side being equal, with a difference of one, to the number of diodes having their anode on the common terminal side.

Abstract: The use, for the manufacture of paper coating colors, of a copolymer water-soluble in a neutral or alkaline medium as an agent for simultaneously adjusting the water retention of the coating colors and the Brookfield viscosity of the said coating colors; a water-retention agent comprising the copolymer; and coating colors and the coated paper and cardboard thus obtained.

Abstract: The invention relates to a water-soluble copolymer having at least one alkoxy or hydroxyl polyalkylene glycol function grafted onto at least one ethylenically unsaturated monomer, as an agent to improve the activation of the optical brightness of the end product, in the fields of paper, textile, detergents and paint.

Abstract: A multi-band inductive circuit in an integrated circuit, including at least two parallel branches respectively including a first inductance and a second inductance in series with a capacitor, the two inductances being coupled to each other.

Abstract: A high-frequency coupler for extracting a secondary signal representative of a main signal carried by a conductive line, including two series-coupled, respectively high-pass and low-pass, filters, and the input of which is intended to be connected to said line while its output is intended to provide the secondary signal, the filters being sized so that the sum of their respective attenuations is substantially constant over the coupler passband, and so that their respective cut-off frequencies are in said passband.

Abstract: The use, for the manufacture of paper coating colors, of a copolymer water-soluble in a neutral or alkaline medium as an agent for simultaneously adjusting the water retention of the coating colors and the Brookfield viscosity of the said coating colors. A novel water-retention agent for paper coating colors, water-soluble in a neutral or alkaline medium. The coating colors and the coated paper and cardboard thus obtained.

Abstract: A mode-switching transformer selective on a band centered on a first frequency, comprising, between a same common mode input/output terminal and respectively one of two differential mode input/output terminals, a high-pass filter with a cut-off frequency smaller than said first frequency, a band-pass filter with a central frequency greater than said first frequency.

Abstract: A non-directional coupler including a semiconductor junction in series with a capacitor, the semiconductor junction being formed so that the threshold frequency short of which it behaves as a rectifier is smaller than the coupler's operating frequency.