Dual-band magneto-electric dipole antenna with high-gain for base-station applications

Khorasani, S., Nourinia, J., Ghobadi, Ch., Shokri, Majid, Hatamian, A. and Virdee, Bal Singh (2021) Dual-band magneto-electric dipole antenna with high-gain for base-station applications. AEU - International Journal of Electronics and Communications / Archiv fur Elektronik und Ubertragungstechnik, 134 (153696). pp. 1-8. ISSN 1434-8411

Abstract

The paper presents the results of a novel high-gain dual-band magneto-electric dipole (MED) antenna. The antenna comprises two pairs of horizontal metal plates of different heights that are excited by a Γ-shaped feedline structure. The antenna is entirely made of metal plates. Compared to traditional MED antennas the proposed design exhibits dual-band operation with higher radiation gain and whose frequency ratio can be modified by simply adjusting the heights of the two magneto-electric dipole segments. This feature is necessary for cellular base-station applications. The operation and characteristics of the antenna are validated by measurements. The measured results confirm the proposed antenna achieves fractional bandwidths of 13.31% (801.9-916.2 MHz) and 19.76% (1710.7-2085.7 MHz) for S11 ≤-10 dB. It has stable unidirectional radiation patterns and optimum radiation gains of 9.2 dBi and 7.8 dBi at the first and second operating bands, respectively.

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