Spatially decoupled 8-port box shaped MIMO DRA with quad-directional pattern diversity

Kumari, Tripta; Das, Gourab; Gangwar, Ravi Kumar

doi:10.1080/09205071.2021.1874544

Cited by 9 publications

(3 citation statements)

References 14 publications

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“…The design has the advantage of mutual coupling reduction without incorporating any structure but with an increased size. In [29], an eight-port MIMO antenna with a quad-directional pattern was presented. The design featured four cylindrical DRAs placed in a box configuration radiating in four directions, with each DRA being excited by probe feeding and conformal-strip feeding, achieving orthogonal feeding and improving isolation.…”

Section: High Capacity Designsmentioning

confidence: 99%

MIMO Dielectric Resonator Antennas for 5G Applications: A Review

et al. 2023

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This article presents a thorough literature review of published designs of multiple-input multiple-output (MIMO) dielectric resonator antennas (DRAs) specifically designed for 5G applications. The performance of these designs is discussed in detail, considering various parameters such as gain, isolation, size, bandwidth, profile, and radiation characteristics. The primary objective of this work is to appreciate the significant progress made in this vital area of research. This article also aims to identify any existing gaps in the literature and provide potential directions for future work.

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Section: High Capacity Designsmentioning

confidence: 99%

MIMO Dielectric Resonator Antennas for 5G Applications: A Review

et al. 2023

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“…Up to now, plenty of decoupling methods have been introduced to alleviate the mutual coupling between antenna elements to achieve high isolation and acceptable DRA performance, such as parasitic elements [ 15 , 16 ], detected ground structures (DGSs) [ 17 , 18 ], metamaterial [ 19 , 20 , 21 , 22 ], and orthogonal modes induced by hybrid feeding mechanism [ 23 , 24 ]. An L-shaped dual-band MIMO DRA, which is excited by two microstrip line bending coupling slots and a cylindrical air gap to achieve good isolation of 17 dB, was introduced for LTE applications in [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

“…Das et al presented a six-port and back-to-back four-port MIMO DRA-created gradient FSS as partially reflecting surfaces for the use of WLAN [21,22], where the isolation of the system can be realized over 20 dB and the size of the four-port antenna was 112 × 112 × 31.6 mm 3 . In [23], a spatially independent eight-port box-formed MIMO DRA was designed with the isolation of better than 20 dB and a size of 52.4 × 52.4 × 25 mm 3 by adopting the exciting technology of orthogonal mode and spatial decoupled radiation mode. More recently, specific higher-order modes have been proposed to realize the decoupling between the two antennas, which can improve the isolation around 30 dB in [25].…”

Section: Introductionmentioning

confidence: 99%

A Four-Port MIMO Cylindrical DRA with High Isolation in Ultra-Compact Size for WLAN Applications

Li,

Ji,

Duan

et al. 2023

Micromachines

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A novel ultra-compact four-port multiple-input-multiple-output (MIMO) cylindrical dielectric resonator antenna (DRA) with improved isolation is proposed for WLAN applications in this paper. The antenna is originally radiated with the assistance of two different excitation mechanisms to generate decoupled orthogonal modes. To further diminish the coupling field and improve the isolation, a suitable U-shaped slot is created on the common ground plane. Two additional rectangular slits are also etched to adjust the impedance matching of other ports. To better reveal the operating mechanism of the decoupling scheme, the common mode (CM) and differential mode (DM) impedance analysis methods between DRA ports are presented. The etched U-shaped slot can tune the impedance of CM and DM to be consistent to realize the decoupling. The antenna is simulated, fabricated, and tested to verify the decoupling mechanism. The results demonstrate that the isolation between ports 1 and 2 is enhanced from 5 dB to 23 dB, and other ports exhibit low coupling of better than 12 dB. Moreover, the antenna with the full size of 30 × 30 × 8.1 mm3 can be used either as a four-port DRA with a bandwidth of 300 MHz or as a two-port DRA with a bandwidth of 700 MHz, at a center frequency of 5.6 GHz.

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Design of 8-port compact hybrid fractal UWB MIMO antenna with a conjoined reflector-ground integration for isolation improvement

Mohanty

Sahu

2022

AEU - International Journal of Electronics and Communications

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Spatially decoupled 8-port box shaped MIMO DRA with quad-directional pattern diversity

Cited by 9 publications

References 14 publications

MIMO Dielectric Resonator Antennas for 5G Applications: A Review

MIMO Dielectric Resonator Antennas for 5G Applications: A Review

A Four-Port MIMO Cylindrical DRA with High Isolation in Ultra-Compact Size for WLAN Applications

Design of 8-port compact hybrid fractal UWB MIMO antenna with a conjoined reflector-ground integration for isolation improvement

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