METAMATERIAL INSPIRED ANTENNA FOR BIOMEDICAL APPLICATIONS

This work suggests a novel, miniaturized, metamaterial inspired antenna for biomedical applications. The proposed antenna operates in the range of 2.8GHz to 4.5GHz. Size reduction and gain improvement is achieved in the proposed design is possible due to the use of metamaterial. The size of the proposed prototype is 36x29x2 mm(3) with polyamide acting as a substrate having 4.3 as permittivity value and dielectric loss tangent of 0.004. Repeating arrangement of unit cells is made on metamaterial based polyamide substrate by inserting the repeating arrangement of unit cells. Each unit cell comprises of two C-type patterned patch surrounded by a two U shaped patches. These patterns comprise CSRR (Complimentary Split Ring Resonators). Rectangular slots are made on ground plane for bandwidth enhancement. The suggested antenna provides a maximum return loss of 18 dB at a frequency of 3GHz and a gain of 3.024 dBi is achieved. The proposed antenna is designed using HFSS v 15 software suite.