Characterization of an Implanted Antenna inside a 3D Printed Multilayer Hip Phantom

A Cavity Backed Slot (CBS) antenna is designed to operate inside the human body for the application to smart hip implants at the 2.4 GHz ISM band. A multilayered hip phantom is developed using 3D printed hip and bone models filled with muscle and bone mimicking liquids. A hip stem and a ceramic head by Corail are attached to the femur and the hip bone respectively. The antenna is located at one of the vertices of the metallic stem. The hip phantom is fixed on a turntable and the antenna’s performance is measured inside a 1x1x2m portable anechoic chamber. The paper details the measurement set-up and shows that the frequency response and the transmission response of the antenna are within the desired range.

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