Optimal electric load prediction from the KLM model for ultrasound energy receivers

In this paper, we compare the zero reflection and the power maximization conditions to calculate the optimal electric load for maximum US energy absorption by receivers with the KLM model. In experiments with a 1-3 composite transducer, the predictions agree with the measurements at the resonance frequency. Results at the anti-resonance deviate slightly from predictions due to a parasitic load and the limited agreement of the KLM model with the measured electric impedance in air.