Improved Reception of Frequency Spectra on the Receiver Side

A robotic lawnmower system comprising a charging station () and a robotic work tool (), the charging station comprising a signal generator () to which a boundary cable () is to be connected, the signal generator () being configured to transmit a signal () through the boundary cable (), and the robotic working tool () comprising a sensor () configured to pick up magnetic fields generated by the signal () in the boundary cable () thereby receiving the signal () being transmitted and a controller () configured to analyse the picked up signal, wherein the signal generator () is further configured to: prefilter the signal through an filter model; and transmit the prefiltered signal to through the boundary cable () by means of a current generator.