A wide variety of magnetic measurement methods are available for the characterisation of magnetic nanoparticles (MNPs), e.g. (field-dependent) AC susceptibility or magnetic particle spectroscopy (MPS). What they have in common is that they must first generate a magnetic field in order to excite the nanoparticles. The power required for this is provided by a power amplifier, which must fulfil high linearity requirements in order to obtain a spectrally pure magnetic field. These requirements cannot be met by a single amplifier, which is why a combined approach is necessary.
The aim of this thesis is to develop a composite amplifier consisting of an arrangement of two individual amplifiers in order to benefit from the advantages of both amplifiers, such as high linearity and low noise.
Previous knowledge: Hardware hobbyist, measurement electronics, operational amplifiers, independence
Keywords: Magnetic nanoparticles, magnetic measurement methods, circuit board layout