Design of skin implantable radiator with capacitive and CSRR loadings for ISM band applications
- PDF / 2,879,850 Bytes
- 10 Pages / 595.276 x 790.866 pts Page_size
- 90 Downloads / 209 Views
ORIGINAL RESEARCH
Design of skin implantable radiator with capacitive and CSRR loadings for ISM band applications Sarita Ahlawat1
•
Garima Srivastava1 • Gaurav Kumar1
Received: 12 October 2017 / Accepted: 21 December 2018 Ó Bharati Vidyapeeth’s Institute of Computer Applications and Management 2019
Abstract 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 9 10 mm 9 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.
& Sarita Ahlawat [email protected] 1
Ambedkar Institute of Advanced Communication Technologies and Research, New Delhi, Delhi, India
Keywords Circularly polarized radiation Complementary split ring resonator (CSRR) Implantable antenna Industrial scientific medical (ISM) Miniaturization Patch antenna Wide axial ratio (AR) bandwidth
1 Introduction An implantable patch antenna provides a means to receive and transmit the information remotely in medical domains. An implantable antenna is an important constituent of implantable medical devices (IMDs) in biomedical telemetry systems. These devices play a significant role in biotelemetry systems to receive physiological data in real time. The mode of connection between the medical devices and controlling equipment outside the human body, considerably affects the convenience of the patient. In past time, inductive links were used to provide communication between the devices which limited the range of communication, data rates and patient’s comfort. To overcome these limitations, wireless implantable systems with RF links seems a good option in biomedical telemetry [1]. In designing of body implantable antennas, some factors such as compactness, radiation efficiency and compatibility with surrounding material need to be well met to the fundamental requirements [2]. For the medical implants, various unlicensed frequency bands have been assigned by the Federal Communications Commission (FCC). These are medical implant c
Data Loading...
