Heat it up: Thermal stabilization by active heating to reduce impedance drifts in capacitive matched networks

The achievable sensitivity inMagnetic Particle Imaging is not only limited by noise, but also depends on the stability of the system. Thermal dependencies of the current carrying components lead to drive-field distortions in amplitude and phase, causing drifting background signals. In this work, an active capacitor heating system is developed that allows for thermal stabilization and trimming a resonance circuit to the desired frequency.