A compact circular polarized metamaterial-inspired fabric antenna for WBAN applications

A compact textile antenna with circular polarization (CP) is implemented for Industrial, Scientific, and Medical applications for wireless body area network with radio band 2.4 GHz. A metamaterial-inspired radiating element is used to achieve a size reduction of up to 85% against the conventional textile antenna. The CP is obtained by trimming the corners of the radiating element. A rectangular slot place with strip line construct a metamaterial-inspired radiator and U-slot is imparted below the radiator by using defected ground structure technique to enhance the antenna bandwidth. This antenna has a physical area of 0.25 x 0.22 x 0.016 lambda g and is implemented on denim jeans substrate of thickness h = 1.6 mm and epsilon(r) = 1.6. With the presented design, measured bandwidth of 5.8% (2.37-2.51 GHz). The axial ratio bandwidth of 80 MHz (2.40-2.48 GHz), and a peak gain of 2.70 dBi has been acquired. A perfect matching is observed between measured and simulated results. This novel integrated design is suitable for all body area network communication systems where flexibility and compactness are desirable.

Automated summary

This paper presents a compact textile antenna with circular polarization for Industrial, Scientific, and Medical applications, utilizing metamaterial-inspired radiating elements to achieve significant size reduction and enhanced antenna bandwidth. The antenna demonstrates a measured bandwidth of 5.8% and an axial ratio bandwidth of 80 MHz, with perfect matching observed between measured and simulated results.