Dual-Port Dual-Wideband Annular Slot Antenna with Stable Unidirectional Pattern

Roger L. Farias, Daniel L. Lemes, Juner M. Vieira, Marcos V. T. Heckler, Alexis F. Tinoco-Salazar

Abstract


This article describes the design of a dual-wideband annular slot antenna. The proposed structure has been optimized to operate in the typical bands of mobile communication systems (0.824-0.960 GHz and 1.710-2.165 GHz). The antenna is designed considering two independent ports with high isolation, one for each operation band, yielding an antenna that exhibits diplexing feature. The final measured results show that the designed antenna exhibits stable radiation pattern over the frequency in both desired bands. The designed antenna has been used to compose a dual-band linear array. Simulation results indicate good performance in both bands for mobile communication systems.

Keywords


dual-band antenna arrays; multi-band antennas; printed antennas; slot antennas

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References


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DOI: http://dx.doi.org/10.1590/2179-10742018v17i11144

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