A novel 32 port cube MIMO combining broadside and endfire radiation patterns for full azimuthal coverage — A modular unit approach for a massive MIMO system

Dahlberg, O.; Kolitsidas, C. I.; Mattsson, Martin; Silver, Grace; Bjorkqvist, O.; Jonsson, B. L. G.

doi:10.1109/apusncursinrsm.2017.8072863

Cited by 1 publication

(1 citation statement)

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“…In [22], we presented a cube antenna intended for RF energy harvesting. The harvester cube was then repurposed for MIMO applications in [23]. However, there the proposed MIMO cube suffered from high correlation between the antenna elements and consequently a low MIMO efficiency.…”

Section: Cube Designmentioning

confidence: 99%

A 28-Port MIMO Cube for Micro Base Station Applications

Zetterström

Kolitsidas

Jonsson

et al. 2020

IEEE Trans. Antennas Propagat.

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A novel multiband, dual-polarized, 28-port multiple-input multiple-output (MIMO) cube is presented. The cube structure enables dense placement of the antennas, whilst still allowing for low correlation between the individual antenna ports. The total size of the cube is roughly 2 × 2 × 0.7 λ 3 0 , where λ 0 is the wavelength at the lowest used frequency. The novelty of the design lies in the use of a combination of orthogonally polarized endfire and broadside radiating antenna elements. Full use of all facets of the cube is achieved without the need to sacrifice bottom or top facets for mounting. Therefore, full azimuthal coverage for communication in two orthogonal polarizations is readily achieved. The system operates in both cellular and Wi-Fi bands (2.4 and 5.5 GHz), with a targeted |S 11 | below −10 dB. The MIMO performance of the system is evaluated in two environments: the rich isotropic multipath environment and the random line-of-sight environment. These two scenarios represent the edge environments of any real-life propagation scenario in terms of the directional distribution of outgoing or incoming waves at an MIMO transceiver. The intended application of the system is micro base stations and repeaters, with possible extension to massive MIMO.

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Section: Cube Designmentioning

confidence: 99%