Miniaturization is a key focus for medically implantable electronics such as Cochlear and Retinal prosthesis, and medical monitoring and recording applications. The need for low power dissipation is equally important, and power-hungry crystals and oscillators are commonly used to produce and control the implant's carrier transmission frequency. This paper presents a new harmonics-based method that allows this transmission frequency to be varied and controlled externally, while also minimizing the size and power requirements of certain implanted devices.
30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Proceedings of the 30th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (Vancouver, BC 20-24 August, 2008) p. 3196-3199