Abstract: An embodiment integrated electronic device comprises a mixer module including a voltage/current transconductor stage including first transistors and connected to a mixing stage including second transistors, wherein the mixing stage includes a resistive degeneration circuit connected to the sources of the second transistors and a calibration input connected to the gates of the second transistors and intended to receive an adjustable calibration voltage, and the sources of the first transistors are directly connected to a cold power supply point.

Abstract: An embodiment integrated electronic device comprises a mixer module including a voltage/current transconductor stage including first transistors and connected to a mixing stage including second transistors, wherein the mixing stage includes a resistive degeneration circuit connected to the sources of the second transistors and a calibration input connected to the gates of the second transistors and intended to receive an adjustable calibration voltage, and the sources of the first transistors are directly connected to a cold power supply point.

Abstract: A signal generation circuit includes a voltage controlled oscillator configured to generate a differential oscillator signal having an amplitude. A passive mixer has first differential inputs coupled to the voltage controlled oscillator to receive the oscillator signal. The passive mixer also includes second differential inputs. A filter circuit is coupled between the voltage controlled oscillator and the second differential inputs of the passive mixer. The filter circuit is configured to filter the differential oscillator signal as a function of the amplitude of the differential oscillator signal to thereby generate a filtered differential oscillator signal and to provide the filtered differential oscillator signal to the second differential inputs of the passive mixer.

Abstract: A low-noise amplifier (LNA) circuit utilizes the capacitive cross coupling technique with two pairs of NMOS transistors in conjunction with two cross coupled PMOS transistors to obtain a reduced noise figure. By using the cross coupling technique on the PMOS input transistor, the LNA circuit is able to reduce the noise figure below 2 dB without the use of an inductor. This LNA circuit may be used to amplify a signal in the WLAN band or the Bluetooth band, either independently or simultaneously.

Abstract: The low-noise amplifier circuit exhibits reduced noise.

Abstract: A transconducting device includes at least one transistor having a control electrode for receiving an input signal whose frequency spectrum contains two different frequencies, an output electrode for delivering an output signal, and a third electrode. The transconducting device further includes a voltage source for delivering a DC reference voltage, and a feedback controller for feedback-controlling the voltage on the third electrode to the DC reference voltage using a negative feedback loop. The negative feedback loop includes resistive damping, connects the third electrode and the control electrode, and has an open-loop gain greater than unity at a frequency equal to the frequency separation between the two different frequencies.

Abstract: A radiofrequency amplifier device includes a transconductor stage having an input for receiving a radiofrequency signal, and a cascode stage connected to the output of the transconductor stage. The device also includes an auxiliary radiofrequency amplifier compensation stage connected as a negative-feedback loop between the output of the transconductor stage and the base or the gate of the cascode stage.

Abstract: A direct conversion type of frequency transposition device includes a transconductor block receiving the input signal and a current switching block connected to the output from the device. At least the common mode (Iif1+Iif2) is servocontrolled to static output currents from the frequency transposition device on a current proportional to a reference current (Iref) and independent of the static output currents from the transconductor block.

Abstract: A transconducting device includes at least one transistor having a control electrode for receiving an input signal whose frequency spectrum contains two different frequencies, an output electrode for delivering an output signal, and a third electrode. The transconducting device further includes a voltage source for delivering a DC reference voltage, and a feedback controller for feedback-controlling the voltage on the third electrode to the DC reference voltage using a negative feedback loop. The negative feedback loop includes resistive damping, connects the third electrode and the control electrode, and has an open-loop gain greater than unity at a frequency equal to the frequency separation between the two different frequencies.

Abstract: A radiofrequency amplifier device includes a transconductor stage having an input for receiving a radiofrequency signal, and a cascode stage connected to the output of the transconductor stage. The device also includes an auxiliary radiofrequency amplifier compensation stage connected as a negative-feedback loop between the output of the transconductor stage and the base or the gate of the cascode stage.

Abstract: A direct conversion type of frequency transposition device includes a transconductor block receiving the input signal and a current switching block connected to the output from the device. At least the common mode (Iif1+Iif2) is servocontrolled to static output currents from the frequency transposition device on a current proportional to a reference current (Iref) and independent of the static output currents from the transconductor block.