Design and Analysis of a Dual-Band CPW-Fed Flexible Split Ring Resonator Circular Microstrip Antenna for Wireless Wearable Devices

International Journal of VLSI & Signal Processing

© 2025 by SSRG - IJVSP Journal

Volume 12 Issue 1

Year of Publication : 2025

Authors : Padmasree Ramineni, Neelima Bigala

10.14445/23942584/ IJVSP-V12I1P101

How to Cite?

Padmasree Ramineni, Neelima Bigala, "Design and Analysis of a Dual-Band CPW-Fed Flexible Split Ring Resonator Circular Microstrip Antenna for Wireless Wearable Devices," SSRG International Journal of VLSI & Signal Processing, vol. 12,  no. 1, pp. 1-15, 2025. Crossref, https://doi.org/10.14445/23942584/ IJVSP-V12I1P101

Abstract:

This paper presents the design and analysis of a flexible circular microstrip antenna with a coplanar waveguide for use in a wearable wireless health monitoring system. The antenna applies a Split Ring Resonator (SRR) in place of a traditional monopole patch, which allows two different resonant frequencies to be generated. The antenna is built on a flexible paper substrate with a dielectric constant of 3.55, and it is enclosed in a circular trim that facilitates application on a patient’s chest. The antenna also allows for remote monitoring because it operates on two different frequencies: 2.4 GHz for Wi-Fi and 3.4 GHz for WLAN. The metrics for performance are satisfactory in both frequency bands. At 2.4 GHz, the antenna has a gain of 4.3 dB, directivity of 4.43 dB, radiation efficiency of 17.21dB and Voltage Standing Wave Ratio (VSWR) of 1.33. At 3.4 GHz, a gain of 6.44 dB, directivity of 4.58 dB, a VSWR of 1.29, and radiation efficiency of 15.98 dB. This evidence suggests that the antenna can be used for health monitoring systems since it provides good wireless connectivity for wearable devices. The study aids in a location feature that can help further progress in this area by showing how flexible antenna designs can improve the comfort and functionality of wearable devices.

Keywords:

Circular Microstrip, Coplanar Waveguide, Health Monitoring, Paper Substrate, Split Ring Resonator, Wearable devices.

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