Optimization and design sensitivity of SISO and MISO wireless power transfer systems

The maximum achievable power transfer efficiency (PTE) of a multi-transmitter wireless power transfer (WPT) system can be obtained directly from its impedance matrix and the load at the receiver through closed-form expressions. This opens the way to both evaluating the performance of a system or an operating mode as well as relating permissible performance degradation to component tolerances. The latter also gives insight into the complexity of realizing and optimally operating a particular system in practice.