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Dielectric ceramic materials are well-recognized in the semiconductor industry because of their exceptional thermal stability, chemical resistance, and crystallinity. Despite their potential applications, these are also demanded in wireless communication. This paper reports the structural, morphological, and dielectric properties of sol-gel-derived CaZnAl2O4 ceramic nanoparticles. X-ray diffraction (XRD) analysis exhibited the polycrystalline characteristic of the CaZnAl2O4 nanoparticles with their crystallite size of 13 nm. Fourier-Transform infrared spectroscopy (FTIR) analysis confirmed the relevant vibration peaks of various functional groups present in the ceramic nanoparticles. Surface morphology study demonstrated the preparation of spherical grains with their mean diameter of 16 nm. The concentric rings also confirm the crystallinity of the nanoparticles as appeared in the selected-area diffraction pattern. Furthermore, dielectric properties investigation showed the variation of dielectric permittivity from 23.76 to 21.67 as a function of increased frequency. Similarly, the dielectric loss is found to decrease from 0.047 to 0.039. As a result, the conductivity increased from 1.324 μS/m to 3.639 μS/m as a function of applied frequency. [ABSTRACT FROM AUTHOR]

This paper reports the prototype fabrication and characterization of microstrip patch antenna using the sol-gel derived composite nanoparticles of vanadium pentoxide oxide (V2O5) and zinc aluminate (ZnAl2O4). The prepared composite nanoparticles were characterized using X-ray diffraction (XRD), which exhibited the dominant peaks of ZnAl2O4 and V2O5. The crystallite size of the nanoparticles was estimated to be 16 nm. The sample was also studied using the Fourier transform infrared spectroscopy (FTIR), field-emission scanning electron microscopy (FESEM), and energy dispersive spectroscopy (EDS) to examine the functional groups morphology and elemental composition present in the composite nanoparticles. Further, these nanoparticles were employed in fabricating the prototype microstrip patch antenna to evaluate its characteristics. The fabricated antenna showed its return loss of -17.13 dB at a resonant frequency of 4.64 GHz. [ABSTRACT FROM AUTHOR]