Local coil system for detecting magnetic resonance signals with a power receiving antenna for inductively receiving energy for the local coil system

The invention relates to a local coil system (LS) for detecting MR signals in an MRI device, with a power receiving antenna (10) for inductively receiving energy for the local coil system (LS) from a changing time with an energy transmission frequency magnetic field, wherein the power receiving antenna (10) comprises a loop-like from a first loop connection (1) to a second loop connection (1 ') extending conductor loop (12). According to the invention it is provided that in the course of power receiving path (20) at least one path filter (24) is arranged, which blocks for harmonic frequencies of the power transmission frequency and / or that the leading in the course of the loop terminals (1, 1 ') to a rectifier (30) power receiving path (20), a path filter (24) is arranged at least, which blocks for harmonic frequencies of the power transmission frequency.