Mutual coupling reduction using metamaterial supersubstrate for high performance &amp; densely packed planar phased arrays

Alibakhshikenari, Mohammad; Salvucci, Alessandro; Polli, Giorgio; Virdee, Bal S.; See, Chan Hwang; Abd‐Alhameed, Raed A.; Falcone, Francisco; Andújar, Aurora; Anguera, Jaume; Limiti, Ernesto

doi:10.23919/mikon.2018.8405323

Cited by 15 publications

(13 citation statements)

References 20 publications

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“…To employ WSA antennas in next generation SAR and MIMO systems, a low degree of coupling is required [112]. Several methods have been implemented to increase isolation [113][114][115][116][117][118][119][120][121][122][123][124][125][126][127][128]. Some commonly used methods include coplanar strip walls between the antennas [129][130] and frequency selective surfaces [131].…”

Section: High Efficient Decoupling Techniques Based On the Metasumentioning

confidence: 99%

“…In [119], an efficient decoupling method is illustrated for a phased array. It is obtained via placing a MTM superstrate patch between the radiation parts of the phased array, as shown in Fig.8.…”

Section: G Suppression In Mutual Coupling Applying Mtm Supersubstratmentioning

confidence: 99%

“…Layout of the antenna (a) without and (b) with MTM decoupling super substrate, and (c) S-parameters[119].…”

mentioning

confidence: 99%

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A Comprehensive Survey on “Various Decoupling Mechanisms With Focus on Metamaterial and Metasurface Principles Applicable to SAR and MIMO Antenna Systems”

et al. 2020

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Nowadays synthetic aperture radar (SAR) and multiple-input-multiple-output (MIMO) antenna systems with the capability to radiate waves in more than one pattern and polarization are playing a key role in modern telecommunication and radar systems. This is possible with the use of antenna arrays as they offer advantages of high gain and beamforming capability, which can be utilized for controlling radiation pattern for electromagnetic (EM) interference immunity in wireless systems. However, with the growing demand for compact array antennas, the physical footprint of the arrays needs to be smaller and the consequent of this is severe degradation in the performance of the array resulting from strong mutual-coupling and crosstalk effects between adjacent radiating elements. This review presents a detailed systematic and theoretical study of various mutual-coupling suppression (decoupling) techniques with a strong focus on metamaterial (MTM) and metasurface (MTS) approaches. While the performance of systems employing antenna arrays can be enhanced by calibrating out the interferences digitally, however it is more efficient to apply decoupling techniques at the antenna itself. Previously various simple and cost-effective approaches have been demonstrated to effectively suppress unwanted mutual-coupling in arrays. Such techniques include the use of defected ground structure (DGS), parasitic or slot element, dielectric resonator antenna (DRA), complementary splitring resonators (CSRR), decoupling networks, P.I.N or varactor diodes, electromagnetic bandgap (EBG) structures, etc. In this review, it is shown that the mutual-coupling reduction methods inspired by MTM and MTS concepts can provide a higher level of isolation between neighbouring radiating elements using easily realizable and cost-effective decoupling configurations that have negligible consequence on the array's characteristics such as bandwidth, gain and radiation efficiency, and physical footprint. INDEX TERMS Decoupling methods, metamaterial (MTM), metasurface (MTS), multiple-input-multiple-output (MIMO), synthetic aperture radar (SAR), isolation enhancement, array antennas.

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Section: High Efficient Decoupling Techniques Based On the Metasumentioning

confidence: 99%

Section: G Suppression In Mutual Coupling Applying Mtm Supersubstratmentioning

confidence: 99%

See 1 more Smart Citation

A Comprehensive Survey on “Various Decoupling Mechanisms With Focus on Metamaterial and Metasurface Principles Applicable to SAR and MIMO Antenna Systems”

et al. 2020

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“…All these techniques have been employed to reduce coupling in the range 3.1 GHz-10.6 GHz. Further, mutual coupling reduced by metamaterial in [30][31][32][33][34][35][36][37][38][39] and [40][41][42][43]. Most of these antennas possess large dimensions, have low isolation enhancement and low %BW and gain.…”

Section: Introductionmentioning

confidence: 99%

Design of SWB MIMO Antenna with Extremely Wideband Isolation

et al. 2020

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This paper presents a compact planar multiple input multiple output (MIMO) antenna for super wide band (SWB) applications. The presented MIMO antenna comprises two identical patches on the same substrate. Dimensions of the MIMO antenna are 0.17λ × 0.20λ × 0.006λ mm3, with respect to the lowest resonance of 1.30 GHz. The SWB antenna was manufactured using F4B substrate having a dielectric constant of 2.65 that provides a percent impedance bandwidth and bandwidth ratio of 187% and 30.76:1, respectively. The mutual coupling between the antenna elements is suppressed by placing a T-shaped corrugated strip in the mid of two antenna elements. The proposed MIMO antenna exhibits maximum diversity gain of 10 dB, low mutual coupling (<−20 dB), low envelope correlation coefficient (ECC < 0.02), efficiency >80%, and low reflection coefficient (<−10 dB) in the SWB frequency range (1.30 GH–40 GHz). The presented antenna is a good candidate for SWB applications. The designed antenna has been experimentally validated, and the simulated results were also verified.

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“…The proposed design can scan a wide angle from −25° to +45°, and has applications in FM radio, GPS and other fields involving wideband usage. A reduction in the mutual coupling of a planar array of tightly packed patch antennas using a metamaterial substrate was presented in [16], and a coupling suppression of around 5 dB was achieved using the novel technique proposed by the authors. Increased isolation was achieved in [17] using mutually coupled U-shaped transmission lines for a 2×3 planar antenna array.…”

Section: Introductionmentioning

confidence: 99%

A novel planar antenna array for a ground-based synthetic aperture radar

Vincent¹,

Francis²,

Raimond³

et al. 2019

Serb J Electr Eng

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A MIMO GB-SAR system called MELISSA was put in place to monitor landslides in Italy and the sinking of the Costa Concordia cruise liner in France. It comprises 12 pyramidal horn antennas placed in a linear geometry for transmission, and these are used in the detection of the motion of a target (for example a landslide or other terrestrial deformation). The low half power beam width (19.76° at θ = 90°) of the transmitting radiation pattern of MELISSA results in low coverage area of the target. This paper proposes two alternative types of horn antenna for the current transmitter module of MELISSA, namely the cantenna and coaxial cavity horn antenna, for installation in a 2×6 planar antenna array. A higher value of the 3 dB beamwidth is observed using these arrays (38.320 at θ = 90° and 104.80 at φ = 0° for the cantenna array and 410 at θ = 90° and 140.40 at φ = 0° for the coaxial cavity horn antenna array). The overall gain of the proposed systems is around 10 dBi, and the efficiencies are between 85% and 90%. Using the Dolph Chebyshev beamforming technique on the proposed antenna arrays yields a zero sidelobe level, which improves the overall peak sidelobe ratio of the system and in turn the quality of the images obtained. Our proposed design for the transmitting section of the MELISSA system has applications terrestrial deformation monitoring with higher area coverage.

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Mutual coupling reduction using metamaterial supersubstrate for high performance & densely packed planar phased arrays

Cited by 15 publications

References 20 publications

A Comprehensive Survey on “Various Decoupling Mechanisms With Focus on Metamaterial and Metasurface Principles Applicable to SAR and MIMO Antenna Systems”

A Comprehensive Survey on “Various Decoupling Mechanisms With Focus on Metamaterial and Metasurface Principles Applicable to SAR and MIMO Antenna Systems”

Design of SWB MIMO Antenna with Extremely Wideband Isolation

A novel planar antenna array for a ground-based synthetic aperture radar

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