A skin implantable radiator with capacitive and CSRR loadings for the industrial, scientific and medical (ISM) band (2400.0–2480.0 MHz) biomedical applications is presented. The proposed antenna comprises of capacitively loaded radiating patch having centre square slot and a circular CSRR loaded ground plane. Compared with initial antenna design having a centre square slot, the proposed method provides effective reduction in size and enhanced axial ratio bandwidth. The miniaturized proposed antenna has small size of 127 mm3 (10 mm × 10 mm × 1.27 mm). The simulated parameters such as simulated coefficients of reflection, axial ratio and radiation pattern of proposed design are presented using two different 3D EM simulators in homogeneous simulation model having electrical properties of skin. The best simulated results in single-layer tissue simulation model are the -10 dB bandwidth that is 10.84% (2.3104–2.5610 GHz) and the axial ratio bandwidth (AR < 3 dB) that is 4.43% (2.3650–2.4699 GHz).The antenna has maximum gain of ~ − 22 dBi. The Specific Absorption Rate (SAR) field distribution is also presented that accounts for patient safety. The obtained results show that it will perform satisfactorily in designated band of operation.
Circularly polarized radiation Complementary split ring resonator (CSRR) Implantable antenna Industrial scientific medical (ISM) Miniaturization Patch antenna Wide axial ratio (AR) bandwidth
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The Professor Binod Kumar Kanaujia, School of Computational and Integrative Sciences, Jawaharlal Nehru University, Delhi-110060, India, has provided his constant qualitative guidance throughout this research work.
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