Mutual Coupling Reduction in Millimeter-Wave MIMO Antenna Array Using a Metamaterial Polarization-Rotator Wall

Farahani, Mohammad Reza; Pourahmadazar, Javad; Akbari, Mohammad; Nedil, Mourad; Sebak, A.; Denidni, Tayeb A.

doi:10.1109/lawp.2017.2717404

Cited by 149 publications

(91 citation statements)

References 9 publications

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“…After the orientation, it is found that the maximum | S 12 | reduction is shifted from 2.45 to 2.55 GHz with | S 12 | = −20 dB, however; | S 12 | is found about −4 dB at 2.45 GHz. Therefore, it is observed by rotating the proposed RBF unit cells by θ = 90°, the direction of the surface wave become in parallel to the induced current on the antenna elements that increases the coupling effects

H_{A} \times H_{S} = (||, H_{normalA}) (||, H_{normalS}) \sin ((), 90) = (||, H_{normalA}) (||, H_{normalS})

…”

Section: Antenna Mutual Couplingmentioning

confidence: 99%

“…The mutual coupling between feeding lines was reduced through different scenarios such as using symmetric feeding network, orthogonal feeding orientation, and depolarized feeding structures . While, suppressing the mutual coupling for a high antenna spatial diversity; meta‐ and frequency selective‐surfaces as antenna superstrates were proposed in Reference . Another technique based on coplanar strip metamaterial walls between antennas was reported for mutual reduction as in Reference .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

On the design of a reject band filter for antennas mutual coupling reduction

Ahmed

Elwi

2019

Int J RF Microw Comput Aided Eng

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In this article, a novel concept for mutual coupling reduction between antenna elements is proposed at 2.45 GHz for Wi‐Fi applications. A reject band filter (RBF) is used in order to reduce the mutual coupling between two monopoles for multi‐input multi‐output (MIMO) systems. The proposed RBF inclusions are developed to have zero refractive index response over a specific frequency band. The inclusions considered here are composed of open‐loop resonators; each one with the same iteration level of Minkowski‐like pre‐fractal structures coupled with an open‐stub transmission line to increase the band selectivity. The inclusions are inserted between λ/2‐spaced monopole elements at 2.45 GHz. A significant mutual coupling reduction is realized by incorporating only two RBF cells. Such effective response is attributed to the electromagnetic wave cloaking at 2.45 GHz using the developed RBF inclusions. An extensive theoretical study using both numerical and analytical methods is invoked to obtain the best performance of the proposed MIMO antenna structure. Finally, the experimental and numerical results are agreed excellently.

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H_{A} \times H_{S} = (||, H_{normalA}) (||, H_{normalS}) \sin ((), 90) = (||, H_{normalA}) (||, H_{normalS})

…”

Section: Antenna Mutual Couplingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

On the design of a reject band filter for antennas mutual coupling reduction

Ahmed

Elwi

2019

Int J RF Microw Comput Aided Eng

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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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“…Besides, it is also common to use a defective ground structure [9][10][11] as a band-stop filter to achieve decoupling. In addition to the traditional methods, the method of using the special properties of metamaterials to achieve the desired effect is also mentioned in [12][13][14]. But the above-mentioned methods are having insufficient space on a compact MIMO antenna and are difficult to function.…”

Section: Introductionmentioning

confidence: 99%

A Compact 5G Decoupling MIMO Antenna Based on Split-Ring Resonators

Zhang

Guo

2019

International Journal of Antennas and Propagation

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A compact planar multiple-input multiple-output (MIMO) antenna array for 5G band is proposed in this paper. To improve the isolation of compact microstrip antenna array, this paper mainly presents an electromagnetic resonant ring method for MIMO antenna array. The proposed antenna can cover both the 3.3-3.6 GHz and 4.8-5 GHz bands proposed for the 5G band. The antenna proposed in this paper consists of two symmetrical meandered monopole radiators, grid structures, and a Y-shape element. Two different sizes of split-ring resonators (SRRs) are used to suppress the interference of the coupled signal to the antenna system; thereby it can reduce the mutual coupling effect. The experimental results show that the mutual coupling between the two elements is below -25 dB in both of the bands after adding the SRRs. And this antenna is only 23×19 mm2. Its compact size and structure can be used as a mobile terminal antenna.

show abstract

Mutual Coupling Reduction in Millimeter-Wave MIMO Antenna Array Using a Metamaterial Polarization-Rotator Wall

Cited by 149 publications

References 9 publications

On the design of a reject band filter for antennas mutual coupling reduction

On the design of a reject band filter for antennas mutual coupling reduction

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

A Compact 5G Decoupling MIMO Antenna Based on Split-Ring Resonators

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