Performance Evaluation of Meander Line Implantable Antenna integrated with EBG Based Ground for Anatomical Realistic Model

Abstract

A unique design and meander line implantable
antenna is examined in this paper which satisfies the
requirements of ultra-wide band. The designed antenna is
integrated with the electromagnetic band gap (EBG) structure
based ground plane to enhance the performance. Rectangular
electromagnetic band gap (EBG) structures are represented here
to evaluate the antenna performance. This compact and efficient
MLA antenna is applied to improve the antenna performance for
numerous implantable scenarios and biomedical applications.
The proposed antenna with EGB ground plane is designed for
both the simplified model and anatomical realistic models for the
human body and executed the performance in bio-environment.
To approve the results of implantable antennas more correctly,
simulation is analyzed using anatomical realistic human models.
The ultimate design has the whole dimension is 15.2 x 8.8 m2
. The thickness of the antenna is about 0.8 mm. FR4 is chosen as the
substrate material and Copper is chosen as the patch material.
The antenna is enclosed biocompatible material with silicon
inside the tissue in order to protect patient safety. Significant
parameters such as S11 parameter, Far field (radiation pattern),
VSWR, Efficiency, Directivity, Gain of the proposed antenna
have calculated and measured the performance both the
simplified and realistic human models. Comparison Analysis of
S11 parameter for different substrate materials and patch
materials have observed. The radiation mechanism and modified
design of the implantable antenna reducing Specific Absorption
Rate (SAR) for safety issues. All the simulation results and
measurements are obtained from CST Microwave Studio to
validate the design.