Mutual Coupling Reduction in Dielectric Resonator Antennas Using Metasurface Shield for 60-GHz MIMO Systems

Dadgarpour, Abdolmehdi; Zarghooni, Behnam; Virdee, Bal S.; Denidni, Tayeb A.; Kishk, Ahmed A.

doi:10.1109/lawp.2016.2585127

Cited by 132 publications

(76 citation statements)

References 19 publications

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“…The isolation between antenna elements is considered as one of the most important parameters to estimate the MIMO antenna performance. In recent years, some concepts such as slots, electromagnetic band gaps, resistive walls, and artificial magnetic conductors have been used to realize high isolation in MIMO antennas [9][10][11][12]. However, the implementation of concept still faces problems such as narrow operation bandwidth (from 10 to 30% relative bandwidth), large scale (of total length of ∼ λ 0 /2 to ∼ 2λ 0 , λ 0 referring to the wavelength corresponding to the lowest operation frequency), and high profile (∼ λ 0 /6 to ∼ λ 0 /2).…”

Section: Introductionmentioning

confidence: 99%

Compact Wideband Quad-Element Mimo Antenna With Reversed S-Shaped Walls

Wang¹,

Li²,

Zhou³

et al. 2019

PIER M

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We propose a compact wideband planar quad-element multiple input, multiple output (MIMO) antenna, which can cover a wide bandwidth ranging from 2.2 to 30 GHz. Novel reversed S-shaped walls provide high isolation between antenna elements within an extremely closed space, with the edge-to-edge distance between elements being only 1 mm. The simulated and measured results with respect to S parameters and radiation patterns are in good agreement. The experimental results indicate that the quad-element MIMO antenna can provide wide bandwidth (2.2-30 GHz), high isolation (with the transmission coefficients below −19 dB), and low profile (only ∼ λ 0 /40) within a compact structure (32 mm × 32 mm × 4.5 mm). This compact wideband quad-element MIMO antenna with high isolation and low profile has important applications in mobile devices or other small-scaled equipment in future 5G communication.

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Section: Introductionmentioning

confidence: 99%

Compact Wideband Quad-Element Mimo Antenna With Reversed S-Shaped Walls

Wang¹,

Li²,

Zhou³

et al. 2019

PIER M

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“…In addition, the size reduction of DRA was proposed for several possible modes by utilizing the concept of symmetric and antisymmetric mode characteristics . All of these benefits make DRA the right candidate for MIMO systems …”

Section: Introductionmentioning

confidence: 99%

“…Moreover, parasitic structures with metallic entities are also investigated by Sharawi et al to reduce the mutual coupling between antennas. Metamaterial surface shields and frequency selective surface walls (FSSs) have been used to avoid parasitic waves between antenna elements. A two‐element, 4‐port, and 8‐port CDRA diversity/MIMO system with bidirectional pattern diversity is proposed by Das et al for WLAN applications.…”

Section: Introductionmentioning

confidence: 99%

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Ultra‐compact 4‐port DR antenna for multi‐input multi‐output standards

Belazzoug

Messaoudene

Aidel

et al. 2020

Int J RF Microw Comput Aided Eng

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Here, an ultra‐compact Multi‐Input‐Multi‐Output (MIMO) antenna system is presented for Wireless Local Area Network (WLAN) applications. The proposed antenna compactness approach is based on using Cylindrical‐Dielectric‐Resonator‐Antenna (CDRA) symmetry with the help of image theory to achieve the best size reduction of the resonators and maintain the resonance frequency of the original CDRA. The electric/magnetic walls approach is utilized to miniaturize the size by exploring the symmetry and antisymmetry of the resonant mode. First, a CDRA for MIMO system is designed and tested in terms of return loss and radiation efficiency. Then, two configurations of MIMO‐Antennas (two and four ports) are examined by using the same substrate size. The 2‐port‐MIMO antenna is built from two half‐CDRs (HCDRs) facing each other. Similarly, four‐quarter‐CDRs (QCDRs) are created to form a 4‐port MIMO antenna system. As a result, a 75% size reduction is achieved (size of 30 × 30 × 7.62 mm3). The measured impedance bandwidth for the 4‐port MIMO antenna is 5.4% (5.4‐5.7 GHz), with more than 15 dB isolation levels. Proper levels of Envelope Correlation Coefficients (ECCs) are also achieved (1 × 10−2‐4 × 10−2), with a channel capacity loss (CCL) of 0.04 bits/S/Hz. The proposed MIMO antennas are suitable for compact wireless communication systems.

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“…However, implementation of multiple antennas in a limited design space is a major constraint due to the interelement coupling which reduces the antenna performances. In reported literatures, various design techniques have been implemented to principally reduce the mutual coupling in MIMO system such as with implemen-tation of stubs and neutralization lines [2], [3], split ring and complementary split ring resonators [4][5][6], polarization isolation converters [7], various parasitic resonant elements [8], [9], metamaterial based decoupling structure [10], [11] etc. In [12], a novel design utilizing frequency selective surface (FSS) based unconventional ground plane is demonstrated for simultaneous improvement of isolation and radar cross section (RCS) reduction in MIMO antenna.…”

Section: Introductionmentioning

confidence: 99%

Isolation and Gain Enhancement Using Metamaterial Based Superstrate for MIMO Applications

Mark¹,

Rajak²,

Mandal³

et al. 2019

RADIOENGINEERING

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In this paper, a metamaterial superstrate inspired multiple-input-multiple-output (MIMO) for gain and isolation enhanced antenna system is investigated for WLAN applications. The superstrate layer generates a resonant cavity effect which results in gain enhancement of the antenna system by 3.73 dBi (65%). The superstrate consists of a novel hexagonal nested ring structure, placed at a height of 0.175λ 0 above antenna and confines the near field coupling between the antenna elements, thereby reducing the mutual coupling. The isolation between each antenna elements is better than 20 dB over the entire band of operation with reduced edge-to-edge spacing of 0.057 λ 0 which makes it suitable for the larger MIMO configurations. The prototype of the proposed design is fabricated and validated through proper measurement that shows the measured impedance bandwidth of 7. . The measured gain and simulated efficiency remains above 8.6 dBi and 84% along with envelope correlation coefficient ˂0.003 over the operating band making the design suitable for high gain MIMO WLAN applications.

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Mutual Coupling Reduction in Dielectric Resonator Antennas Using Metasurface Shield for 60-GHz MIMO Systems

Cited by 132 publications

References 19 publications

Compact Wideband Quad-Element Mimo Antenna With Reversed S-Shaped Walls

Compact Wideband Quad-Element Mimo Antenna With Reversed S-Shaped Walls

Ultra‐compact 4‐port DR antenna for multi‐input multi‐output standards

Isolation and Gain Enhancement Using Metamaterial Based Superstrate for MIMO Applications

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