Abstract: The invention relates to an optical component including an array of coupled waveguides, wherein said waveguide array includes: a first area made of parallel waveguides coupled according to a first coupling coefficient; a second area adjacent to the first area and made of parallel waveguides coupled according to a second coupling coefficient lower than the first coupling coefficient; a third area adjacent to the second area and made of parallel waveguides coupled according to a third coupling coefficient higher than the second coupling coefficient; a fourth area adjacent to the third area and made of parallel waveguides coupled according to a fourth coupling coefficient lower than the third coupling coefficient; and a fifth area adjacent to the fourth area and made of parallel waveguides coupled according to a fifth coupling coefficient higher than the fourth coupling coefficient.

Abstract: In one embodiment, a circuit provides two quadrature components, I and Q, from a received modulated signal, from three mutually phase-shifted components of the received signal. The circuit can demodulate three mutually phase-shifted components of a baseband signal, in order to provide two quadrature demodulation components. The circuit includes three circuit inputs, each designed to received said three components, respectively. The circuit further includes a first and second adder circuit. The circuit also includes a bank of weighting circuits linked, at input, to the three circuit inputs and linked, at output, to the inputs of the first and second adder circuits so as to transmit to each adder input, with a determined weighting, a particular one of said three components, the weightings being chosen so that the first and second adder circuits provide said two quadrature demodulation components.

Abstract: The invention relates to an electronic switching device for high-frequency signals. The invention is of particular use in the connection between a microwave frequency antenna and an electronic circuit. This circuit comprises one or two access points designed to be connected to the antenna forming a third access point. In the case of a switch between one access point and the antenna (called an SPST switch), it comprises two switching diodes, one, called a serial diode, being connected in series between the access points and the other, called a shunt diode, between one of the access points and an earth of the device.

Abstract: The circuit (7) for demodulating three mutually phase-shifted components of a baseband signal, in order to provide two quadrature demodulation components (I, Q), comprises—three circuit inputs (4, 5, 6), designed to receive respectively the three components, —first and second adder circuits (77, 78) and—a bank (70) of weighting circuits (71, 72, 73, 74, 75, 76) linked, at input, to the three circuit inputs (4, 5, 6) and linked, at output, to inputs of the first and second adder circuits (77, 78) so as to transmit to each adder input, with a determined weighting, a particular one of said three components, the weightings being chosen so that the first and second adder circuits (77, 78) provide the said two quadrature demodulation components (I, Q).

Abstract: The invention relates to an electronic switching device for high-frequency signals. The invention is of particular use in the connection between a microwave frequency antenna and an electronic circuit. This circuit comprises one or two access points designed to be connected to the antenna forming a third access point. In the case of a switch between one access point and the antenna (called an SPST switch), it comprises two switching diodes, one, called a serial diode, being connected in series between the access points and the other, called a shunt diode, between one of the access points and an earth of the device.

Abstract: The demodulator by direct frequency conversion comprises a vector addition device having: a first circuit (1) that furnishes, starting from a first AC signal (LO), a respective AC signal to n outputs that are not all of the same amplitude and of the same frequency, but are out of phase with regard to one another in such a manner that each one is not either in phase nor in opposite phase with any other; a second circuit (2) that splits a second AC signal (RFin) toward n outputs; a number n of summers (3a, 3b, 3c) each receiving, at the input, a respective output of the first circuit (1) and a respective output of the second circuit (2), and; a respective power sensor (4a, 4b, 4c) for each summer, whereby the number n is greater than or equal to 3. The demodulator also comprises digital processing means (5, 6) that furnish the result of the demodulation.