Method of applying signal amplification for driving an ultrasound transducer, corresponding circuit and system

A circuit, comprising:

• an initial oscillator circuit block configured to produce an initial oscillating signal having an initial frequency;
• an amplification circuit block coupled to the initial oscillator circuit block and configured to provide an output signal as a result of applying signal amplification to the initial oscillating signal, the output signal including a first harmonic component at the initial frequency as well as a further harmonic component at a further harmonic frequency;
• at least one auxiliary oscillator circuit block configured to produce at least one auxiliary oscillating signal having an auxiliary frequency equal to the further frequency;
• a combiner node coupled to the initial oscillator circuit block, to the at least one auxiliary oscillator circuit block and to the amplification circuit block, the combiner node configured to combine the initial oscillating signal and the at least one auxiliary oscillating signal, providing to the amplification circuit block a combined oscillating signal as a result,
• wherein applying signal amplification to the combined oscillating signal via the amplification circuit block produces a combined output signal exempt from the further harmonic component in response to the at least one auxiliary oscillating signal being an antiphase version of the further harmonic component.

A method, comprising:

• generating a first oscillating signal having a first frequency;
• generating, with a compensation circuit, a second oscillating signal having a second frequency corresponding to a harmonic of the first frequency;
• generating a combined input signal by combining first oscillating signal with the second oscillating signal;
• providing the combined input signal to an amplifier;
• generating, with the amplifier, an output signal by amplifying the input signal;
• providing the output signal to the compensation circuit in a feedback arrangement;
• and
• reducing, in the output signal, a harmonic component of the output signal adjusting the second oscillating signal with the compensation circuit based on the output signal, the harmonic component having the second frequency.