Aspects herein include filter elements and filtration systems. In an embodiment, a filter element for a filtration system is included. The filter element can include a filter body and a filter media disposed within the filter body. A wireless power receiver can be associated with the filter body. The wireless power receiver can include a receiving antenna, a control circuit in electrical communication with the wireless power receiver, and a feedback channel circuit in communication with the control circuit and configured to transmit through a channel separate from the receiving antenna. Other embodiments are also included herein.