Gain‐enhancement technique for wearable patch antenna using grounded metamaterial. Issue 15 (14th October 2020)

• Record Type: Journal Article
• Authors: Das, Goutam Kumar; Basu, Subhadeep; Mandal, Bappaditya; Mitra, Debasis; Augustine, Robin; Mitra, Monojit
• Is Part Of: IET microwaves, antennas & propagation. Volume 14:Issue 15(2020)
• Page Start: 2045
• Page End: 2052
• Publication Date: 2020-10-14
• Subjects: wearable antennas -- UHF antennas -- antenna radiation patterns -- phantoms -- microstrip antennas -- metamaterial antennas -- biomedical equipment; textile material felt fabric -- MTM unit cell design -- specific absorption rate -- biomedical application -- SAR value -- gain‐enhancement technique -- wearable patch antenna -- grounded metamaterial -- metamaterial‐based high‐gain compact wearable antenna -- omega‐like structure -- industrial‐scientific‐and‐medical radio band application -- semisolid phantom -- frequency 2.45 GHz; Microwaves -- Periodicals; Microwave antennas -- Periodicals; Antennas (Electronics) -- Periodicals; Radio wave propagation -- Periodicals; Microwave communication systems -- Periodicals; 621.381305
• DOI: 10.1049/iet-map.2020.0083
• Languages: English
• ISSNs: 1751-8725

Abstract

Abstract : In this study, a metamaterial (MTM)‐based high‐gain compact‐wearable antenna for 2.45 GHz industrial, scientific and medical radio band application has been proposed. To achieve the flexibility of the antenna, textile material felt fabric has been chosen as the substrate of the antenna as well as MTM. An omega (Ω) like structure has been taken as MTM unit cell design. High value of permeability is utilised for the gain enhancement of the antenna. In addition, very low specific absorption rate (SAR) is obtained using the MTM which makes the proposed antenna suitable for the biomedical application. The proposed antenna has achieved about 3 dB gain enhancement along with SAR value of 0.405 W/kg (1 g tissue). The design has been optimised and the prototype with the optimised parameter has been fabricated and tested over the semi‐solid phantom and human body. Further, the proposed antenna over different type of textile material has also been validated.