Abstract
This paper represents several designs of microstrip 3D antenna arrays suitable for fifth generation mobile communication systems as well as mm-Wave imaging systems for cancer detection. Antennas presented show improved characteristics in terms of compact size and multi-directional radiation patterns associated with high gain values. This study implements array designs and fractal geometry for the purpose of miniaturizing the antennas. Triangle-fractal-shape microstrip antenna is designed and fabricated using a double-sided aluminum oxide ceramic substrate. The designed antenna has equal side length of 22 mm, a 29 mm base, operating frequency of 30 GHz frequency, a high gain operation, and multi-band resonance. A good agreement of the measured and simulated results of the reflection coefficient is obtained with acceptable discrepancies. Moreover, a measured gain above 8 dB is achieved. Multiple three-dimensional antenna designs are also discussed for broadband operation that can be used for 5G applications.
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