Triple-Band DP, Low Profile and High Gain Antenna with High Isolation for 4G (Band 40/41) and 5G BTS Applications

Abstract

In this paper, we propose the exploration of the Triple-Band DP (Dual Polarized), Low Profile and High Gain MIMO Antenna for 4G/5G BTS Applications. The design consists of 4 tapered dual polarized bow-tie slot radiators that are fed by pairs of coaxial cables with metallic cylindrical post for mechanical support. The radiating elements are operating at 2.5GHz, 3.5GHz and 6.0GHz. In terms of fundamental radiation characteristics, the 4/5G slot radiators provide dualpolarization characteristic with similar performances. A pair of slotted 4/5G template is created across each radiator in order to improve the isolation characteristic between the adjacent arms with feeding ports of the dual polarized radiators. The pattern of unidirectional radiation is generated by placing a metal ground plane at a distance of λ0/4.The radiating components are equipped for service at 3GPP LTE band 40(2.3-2.4GHz), band 41 (2.496-2.690GHz), band 42 (3.4-3.6GHz) and 6.0-6.13GHz with VSWR<1.5 in the above bands. The proposed MIMO antenna provides very high gain radiation patterns with strong S-parameters. With this feature proposed antenna has a potential application for use in the future 5G systems.