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Analysis and design of implantable Z‐monopole antennas at 2.45 Ghz ISM band for biomedical applications

A novel coplanar waveguide fed z‐monopole implantable antenna has proposed for ISM band biomedical applications. The antenna operates at the resonant frequency of 2450 MHz, wideband communication for high‐data rate implantable biomedical application. The size of the antenna is 38.675 mm3 (7, 8.5, and 0.65 mm). To make the designed antenna suitable for implantation, it is printed on biocompatible Al2O3 ceramic substrate. The proposed antenna was simulated and measured by a phantom liquid and imitating the electrical properties of the human muscle tissue. A study of the understanding of the antenna performance as a function of its dielectric parameters of the environment in which it is immersed was performed. Simulations in various slot widths state demonstrate that the antenna covers the complete ISM band. The specific absorption rate distribution induced by the implantable antenna inside a tissue‐mimicking solution is evaluated. The proposed antenna shows the lower return loss, good impedance matching, and high gain compared to other implantable antennas. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:468–473, 2015