Patent ID: 8803614

Claim:
Electronic device comprising: a first stage provided with a first input for a first input signal, and a first output for a first output signal; a second stage comprising a second input for a second input signal, a direct current terminal operating as a ground terminal for alternating current signals, and a second output for a second output signal; a first inductor connected to the first output and the direct current terminal so that the first and second stages share a direct current; and a second inductor mutually coupled to the first inductor and connected to the second input in order to output the second input signal as a function of the first output signal, wherein at least the first stage has a differential configuration, and wherein: the first output comprises a pair of output terminals; the first inductor is connected across the output terminals pair and is provided with a central symmetry point acting as a virtual ground terminal for the alternating current signals; and the direct current terminal is connected to the virtual ground terminal.