In this paper, we present a high-efficiency wireless power transfer system with design and measurements, for three different types of receivers. The transmitter the uses Class E/F3 amplifier second harmonic reduction to reduce distortion, resonator, proposed filter is designed be load-dependent voltage source, which means that it generates output according load impedance. resonator match impeda...

Magnetic resonance electrical impedance tomography (MREIT) is a recently developed imaging technique that combines MRI and electrical impedance tomography (EIT). In MREIT, cross-sectional electrical conductivity images are reconstructed from the internal magnetic field density data produced inside an electrically conducting object when an electrical current is injected into the object. In this ...

In this work a new control strategy for simulation of three phase power filter for power quality improvement is used .This filter consists of shunt passive LC power filter and series active filter, with nonlinear and linear loads and also with variation in the source impedance. A new control method based on dual formulation of instantaneous reactive power vectorial theory is applied by consider...

Design of the power amplifier for ultrasonic transducer excitation is presented. We assumed that the amplifier output impedance will be significantly lower than the transducer input impedance. Therefore we suggest to used the transformer as voltage step-up and impedance matching element. The transformer influence on the ultrasonic transducer bandwidth and the power transfer efficiency are analy...

A compact microstrip lowpass filter with ultra-wide stopband characteristics and high suppression level is presented. To achieve compact size and wide stopband suppression along with improved impedance matching, symmetrically loaded resonant patches, open stubs and stair shaped high impedance stub are introduced in the filter. The measurement results show good agreement with the simulations. Th...