volume | PIER Journals

Abstract

This research presents the design of a Chebyshev linear antenna array (CLA) integrated with the dielectric lens. In comparison to a uniform amplitude distribution (UAD), a Chebyshev amplitude distribution (CAD) is used to achieve a low side lobe level (SLL) characteristic and increase the directivity of the antenna array. The proposed CLA is optimized to operate at a high fifth generation (5G) frequency. The proposed CLA achieves a -10 dB wide bandwidth from 25.8 GHz to 42.4 GHz. Dielectric lenses can be employed to modify the phase and amplitude of the antenna array, which increases the realized gain and leads to stable radiation over the operational bandwidth. The main purposes of the dielectric lens are to improve the realized gain, enhance efficiency, and result in stable radiation pattern properties. Also, the research presents a study of two types of dielectric lenses with different shapes and their effects on the efficiency and the realized gain of the antenna. The substrate of the dielectric lens is epoxy resin, which has a relative permittivity (ε_r) of 2.716. The proposed CLA integrated with the proposed Type 2 dielectric lens has a realized gain of 15.2 dB and 11.94 dB at the dual-bands 28 GHz and 38 GHz, respectively. All the suggested designs are simulated using CSTMWS2020 and HFSS. However, to verify the obtained results, the proposed CLA is fabricated using a photolithography process technique, and the proposed Type 2 dielectric lens is fabricated using a 3D printing technique.

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Dr. Ahmed Khairy

Dr. Ayman Mohamed Fekry Elboushi

Professor Abdelhameed Abdelmoneim Shaalan

Dr. Mai F. Ahmed