This document discusses, among other things, a system and method for wirelessly transferring information electromagnetically at a first specified operating frequency range and at a second specified operating frequency range using an implantable antenna. In certain examples, the implantable antenna can include a first non-coiled segment and a first coiled segment, and the first specified operating frequency range and the second specified operating frequency range can be provided at least in part by a physical arrangement of the first coiled segment with respect to the first non-coiled segment.
