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Radiation Pattern of Novel Cylindrical Surrounding Patch Antenna for 2.4 GHz Applications

Erhiega N. Umayah and Viranjay M. Srivastava
Department of Electronic Engineering, Howard College, University of KwaZulu-Natal, Durban – 4041, South Africa

Abstract—In this research work, the return loss (S-parameter, S11), Voltage Standing Wave Ratio (VSWR), radiation pattern, Band Width (BW), and percent bandwidth (B%) for a Cylindrical Surrounding Patch Antenna (CSPA) have been obtained from a transformed Rectangular Planar Patch Antenna (RPPA) for application in the Industrial Scientific and Medical (ISM) band. The antenna structure has been designed and analyzed on a polyimide substrate with relative permittivity (εr) 3.5, permeability (μr) 1, and loss tangent (tanδ) 0.0027. Polyamide has been chosen because it is flexible, easily conformable to nonplanar surfaces, and with little or no negative effect on antenna parameters. Simulations have been carried out for curvature radius (r) ranging from 10 mm to 35 mm in steps of 5 mm to ascertain its resonant frequency (fr). Thereafter, simulation results for best achieved curvature radius of 10 mm for the CSPA has been compared with the optimized RPPA. Results verify that the CSPA gave S11 of -23.115 dB, and B% of 3.45% at (fr) of 2.387 GHz, while the RPPA provide S11 of -20.091 dB, and B% of 3.21% at fr of 2.4 GHz.
Index Terms—bandwidth, cylindrical surrounding patch antenna, parameterization, planar rectangular patch antenna, polyimide, return loss

Cite: Erhiega N. Umayah and Viranjay M. Srivastava, "Radiation Pattern of Novel Cylindrical Surrounding Patch Antenna for 2.4 GHz Applications," International Journal of Electrical and Electronic Engineering & Telecommunications, Vol. 8, No. 4, pp. 213-220, July 2019. Doi: 10.18178/ijeetc.8.4.213-220