Deionized Water Insulator Loaded Brain-Implanted UWB Antenna

Abstract

We propose a novel configuration of an insulator for human-head implanted UWB antenna. The insulator is 3D printed with a biocompatible material and is filled with a deionized water of high dielectric constant and low loss tangent. The proposed compact antenna shows an average gain of −20 dBi in the boresight region for the target frequency of 3–5 GHz band, high enough for the wireless biotelemetry communications.