An apparatus and a portable electronic device are provided to facilitate tuning of the resonance of an antenna at least partially disposed within a conductive housing. As such, an apparatus is provided that includes a conductive housing having a first conductive portion. The first conductive portion defines a non-conductive aperture. The apparatus also includes a second conductive portion disposed at least partially within the conductive housing. The second conductive portion defines an open-ended non-conductive slot. The slot is configured to couple to radio frequency circuitry. The apparatus further includes a conductive element extending between and conductively coupling the first and second conductive portions. A personal electronic device that embodiments the apparatus is also provided.