A novel implantable printed dipole with improved gain

This paper presents a novel planar implantable dipole antenna operating at the Medical Device Radio Communications Services band. The proposed antenna's physical volume is 19.8 mm 3 . The antenna exhibits gain and efficiency improvement over similar implantable dipoles through combining a square spiral with a short plain strip in each dipole arm. The antenna's gain is −26.4 dB, and its efficiency is 0.09%. SAR simulation results are also presented.