Abstract: A transmitter/receiver device include an antenna, a voltage source, a radio frequency receiver connected to the antenna and powered by the voltage source, a radio frequency transmitter connected to the antenna and powered by the voltage source, and a switch coupled to the antenna, the receiver and the transmitter and configured to couple/decouple the antenna from the transmitter or from the receiver. The antenna is shared between the transmitter and the receiver. The receiver includes a radio frequency stage that includes an amplifier device having an input coupled to the antenna. The amplifier device includes an amplifier switch configured to connect or disconnect the amplifier device from the voltage source.

Abstract: A transmitter/receiver device include an antenna, a voltage source, a radio frequency receiver connected to the antenna and powered by the voltage source, a radio frequency transmitter connected to the antenna and powered by the voltage source, and a switch coupled to the antenna, the receiver and the transmitter and configured to couple/decouple the antenna from the transmitter or from the receiver. The antenna is shared between the transmitter and the receiver. The receiver includes a radio frequency stage that includes an amplifier device having an input coupled to the antenna. The amplifier device includes an amplifier switch configured to connect or disconnect the amplifier device from the voltage source.

Abstract: A frequency conversion device for transforming a frequency of an input signal, the device comprising: a signal generator for providing a plurality N of first signals at a first frequency, where N?1, from an input signal having an in-phase component I and a quadrature signal component Q; an oscillator for generating N parallel oscillation signals, wherein the N oscillation signals are stepped in phase with respect to one another; a mixer comprising N mixing components, each mixing component being coupled to receive a respective one of the plurality of first signals and coupled to receive a respective oscillation signal for mixing the respective first signal with the corresponding oscillation signal to provide an output signal; and a common amplifier for receiving the N output signals from the N mixing components in N sequential phases for transmission.

Abstract: A frequency conversion device for transforming a frequency of an input signal, the device comprising: a signal generator for providing a plurality N of first signals at a first frequency, where N?1, from an input signal having an in-phase component I and a quadrature signal component Q; an oscillator for generating N parallel oscillation signals, wherein the N oscillation signals are stepped in phase with respect to one another; a mixer comprising N mixing components, each mixing component being coupled to receive a respective one of the plurality of first signals and coupled to receive a respective oscillation signal for mixing the respective first signal with the corresponding oscillation signal to provide an output signal; and a common amplifier for receiving the N output signals from the N mixing components in N sequential phases for transmission.

Abstract: The present invention includes a mixer circuit integrating a voltage-to-currrent conversion in the same stage. A mixer device 20 of a transmission system comprises a pair of transistors 41 and 42 forming a differential circuit having two differential inputs receiving a carrier VLO, two differential current outputs delivering a differential output current and a common current output whose current is equal to the sum of the differential output currents; a current-to-voltage conversion element 47 coupled to the common current output of the pair of transistors; an amplifier 30 having a positive input receiving the modulating signal, a negative feedback input coupled to the current-to-voltage conversion element, and an output coupled to each of the differential inputs of the pair of transistors.

Abstract: A radiofrequency mixer multiplies a first radiofrequency signal by a second radiofrequency signal, wherein the first radiofrequency signal is: either a differential signal, corresponding to the difference between a first signal component and a second signal component, each corresponding to a respective approximately square signal of a duty cycle strictly below 0.5, or a single-ended signal which is a non-differential approximately square signal for which the duty cycle is strictly below 0.5.

Abstract: The present invention includes a mixer circuit integrating a voltage-to-currrent conversion in the same stage. A mixer device 20 of a transmission system comprises a pair of transistors 41 and 42 forming a differential circuit having two differential inputs receiving a carrier VLO, two differential current outputs delivering a differential output current and a common current output whose current is equal to the sum of the differential output currents; a current-to-voltage conversion element 47 coupled to the common current output of the pair of transistors; an amplifier 30 having a positive input receiving the modulating signal, a negative feedback input coupled to the current-to-voltage conversion element, and an output coupled to each of the differential inputs of the pair of transistors.

Abstract: An integrated circuit including a substrate, a conductive layer, at least one inductive element superposed on the conductive layer and formed by a metallic turn having an outer contour and an inner contour, which bound between them a surface referred to as the radiation surface, and insulating material for insulating the conductive layer from the inductive element. The conductive layer has a surface substantially identical to the radiation surface.

Abstract: The invention relates to an insulation device (10) intended to prevent the propagation of electromagnetic radiation produced by at least one electric element integrated with a low-resistivity (11) substrate, said insulation device (10) being robust and having uniform isolation properties in space.

Abstract: The invention relates to an integrated circuit comprising a substrate, a conductive layer (1), at least one inductive element (2) superposed on said conductive layer and formed by a metallic turn having an outer contour and an inner contour, which bound between them a surface referred to as the radiation surface, and means for insulating the conductive layer from the inductive element. The conductive layer has a surface substantially identical to the radiation surface.

Abstract: The present invention relates to an integrated circuit comprising a series of conducting layers (1) . . . (6), separated in pairs by insulating layers, including a capacitive element CF formed by a stack of conducting layers cut out of the conducting layers. According to the invention, the capacitive element CF comprises as many conductive plates as the integrated circuit has conducting layers. The invention enables to maximize the reduction of the influence of each of its manufacturing steps on the real value of the capacitive element CF.