Abstract
This paper deals with the performance evaluation of dielectric resonator on patch (DRoP) antenna using high dielectric CaCu3Ti4O12 nanoparticles (CCTO Nps) synthesized by low-temperature solution combustion method. X-ray diffraction pattern reveals that the optimum calcination temperature required for the formation of single phase CCTO Nps is 900 °C. Near-spherical morphology of CCTO Nps with nano size (∼100 nm) has been visualized using field emission scanning electron microscopic images. High-resolution transmission electron microscopic and selected area electron diffraction data reveal the cubic crystal system of CCTO Nps with preferential orientation of (220) plane. The low-frequency dielectric behaviors of CCTO Nps exhibit excellent properties like high dielectric constant (εr = 447) and low dielectric loss (tanδ = 0.42) at 30 °C. DRoP antenna fabricated using high dielectric CCTO Nps exhibits promising results such as wide bandwidth (540 MHz), good return loss (−21.23 dB) at 2.45 GHz and smaller in sizes (10.17 mm2), which is required for modern-day wireless communication systems.
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