Design and Analysis of Wideband Dielectric Resonator Antenna with Bandwidth and Gain Enhancement for C-Band Applications
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This paper describes the modelling, simulation and analysis processes of a dielectric resonator antenna based on aperture-coupling mechanism at C-band. This antenna consists of three dielectric layers separated by an air gap to enhance the antenna gain. A rectangular aperture coupling slot is designed in the ground plane to feed the antenna from a microstrip feed line that is designed in the bottom layer of the antenna. Alumina layer with 12 relative permittivity is put as a top layer, while FR-4 layer with a lower permittivity of 4.3 is put lower to it. This arrangement of the antenna layers and its permittivities has enhanced the impedance bandwidth to more than 42% (3.9941 to 6.1492 GHz), and the realized gain to more than 10 dB. These enhancements of the antenna characteristics at C-band make it suitable for satellite and radar system applications.
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