Dual Band Implantable Antenna Using Pin and Slot for Bmds

Abstract

In this paper, we discussed the implantable circular patch antenna for medical devices, after review of this paper, readers will understand about implantable antenna and how these implantable antennas become boon for medical industry. Majorly, these antennas are used in implantable medical devices (IMDs). The implantable devices are placed inside the body where they track bio-signals (like blood pressure and temperature signals) and transmit the data to the external device. This paper represents the highly miniaturization antenna having volume of 7.065 mm³. The effectiveness of the antenna is thoroughly examined in terms of reflection coefficient, gain, SAR, Impedance Bandwidth values. The substrate material featured in Antenna is FR4 epoxy because it helps to increase the antenna's bandwidth and is far less expensive than Rogers, giving an edge over other substrate materials. It has a dielectric constant of 4.4. The proposed antenna exhibits ISM band from 2.4 GHz to 2.48 GHz. A shorting pin and slots that offer ISM band, an acceptable SAR of 237.23 W/Kg, and a directed gain of -20.117 dB. To achieve wireless charging, the implantable antenna must be designed with dual bands (ISM bands). Here the proposed antenna shows characteristics of dual band at ISM band (2.4 GHz to 2.48 GHz) and (7.625 GHz). One band is used for data transmission during telemetry sessions and the other in order to enable wireless charging without affecting the location of IMDs inside the human body. The band uses radiation and transforms it into DC power using a rectifier and filter (integral BMD components). The suggested implanted antenna's parametric analysis has been carefully examined. The use of circular microstrip patch antennas is extensive, particularly in the domains of pharmaceutical, military, mobile, and planetoid communications.