Abstract: A system for measuring a complex impedance associated with an arrangement of battery or fuel cells in an energy storage system may include a controller, a current measurement device, and voltage measurement devices. The current measurement device may be shared by the cells for measuring a test current provided to the cells. The voltage measurement devices may be respectively coupled across corresponding cells. The controller, the current measurement device, and the voltage measurement devices may be coupled together using a DC isolated bus. The controller may determine a respective complex impedance of corresponding groups of the cells using a complex voltage measured by a respective voltage measurement device coupled across a corresponding group of the cells and a complex current measured by the complex current measurement device.

Abstract: A system is provided. The system comprises a transform domain radio receiver comprising a plurality of reconfigurable processing paths coupled to a radio frequency signal input, each reconfigurable processing path implementing a down converter, a low-pass filter, and an integrator and wherein a frequency selectivity of the processing path is reconfigurable. The system also comprises a control unit to configure a frequency selectivity of the plurality of parallel reconfigurable processing paths.