A Detuning Study of a Miniaturized PIFA Antenna inside the Human Thorax Model

Nowadays, the increasing demand for implantable medical devices (IMD) has required the design of efficient invasive antennas.However, designing an antenna operable in a biological layer is actually an extremely challenging task.The human body is not an ideal medium for the transmission of electromagnetic waves.Thus, it degrades significantly the characteristics of implantable antennas coupled with it.In this paper, the design of a miniaturized slotted rectangular Planar Inverted-F Antenna (PIFA) is proposed.The structure was first optimized to operate in the muscle layer.The location of the antenna was then varied to detect the influence of the other biological layers on its performances.