Apparatus and associated method

Abstract

An apparatus comprising a power providing arrangement for a field powered device having a coil antenna for receiving a wireless signal, the power providing arrangement comprising: a first capacitor configured to be coupled to the coil antenna, the first capacitor configured to store energy obtained from the wireless signal received by the coil antenna, up to a first stored energy level, and configured to provide said energy to power the field powered device; a second capacitor arranged in parallel with the first capacitor via a switch; the switch providing at least a connected state in which the first capacitor and the second capacitor are connected in parallel and configured to both store the energy obtained from the wireless signal up to a second stored energy level, greater than the first stored energy level, and configured to provide said energy to power the field powered device and a disconnected state in which the second capacitor is disconnected from the first capacitor; the switch configured to transition from the disconnected state to the connected state based on particular signalling received from a remote device.

Dependencies are inferred from the claim text.