Miniaturized Circularly Polarized UWB Antenna for Body Centric Communication
- 26 July 2021
- journal article
- research article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Antennas and Propagation
- Vol. 70 (1), 189-196
- https://doi.org/10.1109/tap.2021.3098517
Abstract
A compact body-worn circular polarized textile monopole antenna for wearable applications is reported. The proposed antenna is fabricated on a jean fabric providing flexibility, light-weight, and easy integration into human clothes. The overall size of the proposed antenna is 25 × 30 × 1.4 mm3. Circular polarization (CP) is advantageous for on-body communication as it provides features such as multipath immunity, suppressing interferences, and enables better link connectivity between the sensor nodes. The proposed antenna achieves the CP using an asymmetric stepped L-shaped ground plane and through the incorporation of cross-shaped stub in the radiator. The single fed octagonal strip monopole antenna provides good impedance matching over the entire ultra-wide frequency range from 3.09 -11 GHz. Simulation results are in good correlation with the measured results. Axial ratio bandwidth < 3 dB is achieved in the frequency range of 3.4-10 GHz. Gain and efficiency obtained are about 2.3-4.4 dBi and 65-82% at the said frequency range respectively. Structural deformation is performed to analyze the flexibility of the proposed antenna. The simulated SAR values follow the FCC limit making it most suitable for wearable applications.This publication has 34 references indexed in Scilit:
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