Wideband and high gain dielectric resonator antenna for 5G applications

Abstract

In this paper, wideband high gain dielectric resonator antenna for 5G applications is presented. Higher order mode is exploited to enhance the antenna gain, while the array of symmetrical cylindrical shaped holes drilled in the DRA to improves the bandwidth by reducing the quality factor. The proposed DRA is designed using dielectric material with relative permittivity of 10 and loss tangent of 0. 002.The Rogers RT/Droid 5880 has been selected as substrate with relative permittivity of 2.2, loss tangent of 0.0009- and 0.254-mm thickness. The simulated results show that, the proposed geometry has achieved a wide impedance bandwidth of 17.3% (23.8-28.3GHz=4.5 GHz) for S11-10 dB, and a maximum gain of about 9.3 dBi with radiation efficiency of 96% at design frequency of 26 GHz. The DRA is feed by microstrip transmission line with slot aperture. The reflection coefficient, the radiation pattern, and the antenna gain are studied by full-wave EM simulator CST Microwave Studio. The proposed antenna can be used for the 5G communication applications such as device to device communication (D2D).

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“…The two classes of antennas, named microstrip patch antennas (MSA) and dielectric resonator antennas (DRAs) are extensively used in the applications of modern communication. Recently, research antenna community is paying more attention to dielectric resonator antenna (DRA) due to its alluring features of higher radiation efficiency, relatively large impedance bandwidth, low profile, design flexibility, ease of excitation schemes and ease of fabrication [4][5][6][7][8][9][10][11][12]. In addition, DRA can be excited by different feeding methods like microstrip feed line [13], probe feeding [14,15], aperture coupling [16,17], and coplanar waveguide (CPW) [16].…”