EM isolation enhancement based on metamaterial concept in antenna array system to support full-duplex application

Alibakhshikenari, Mohammad; Vittori, Marco; Colangeli, Sergio; Virdee, Bal S.; Andújar, Aurora; Anguera, Jaume; Limiti, Ernesto

doi:10.1109/apmc.2017.8251553

Cited by 23 publications

(19 citation statements)

References 9 publications

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“…This is because on a finite ground-plane the surface waves are reflected and diffracted at the edges of the substrate, which results in a significant amount of energy loss [8]. Many techniques have been investigated to improve the radiation performance of patch antennas implemented on substrates [9], which include using photonic bandgap (PBG) or electromagnetic bandgap (EBG) structures around the radiating elements [10]. Another approach to suppress surface waves is to use artificial soft and hard surfaces realized with EBG [11].…”

Section: Introductionmentioning

confidence: 99%

Study on isolation and radiation behaviours of a 34×34 array-antennas based on SIW and metasurface properties for applications in terahertz band over 125–300 GHz

Alibakhshikenari

Virdee

Limiti

2020

Optik

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This paper describes the feasibility of conceptual design of a 34×34 array antenna for operation at Terahertz over a frequency range of 125-300 GHz for S11≤-10dB, which corresponds a fractional bandwidth of 82.35%. Each radiation element constituting the array consists of a square patch of dimensions of 2×2 mm 2 that are excited by a matched microstrip line. Each patch is isolated from each other with metallic via-holes, which are implemented based on the substrate integrated waveguide (SIW) technique. This technique is shown to effectively reduce mutual coupling between adjacent radiation elements that can otherwise undermine the arrays radiation gain and pattern. Periphery of each patch is embedded with circular dielectric slots, which are created based on the metasurface concept to enhance the radiation gain and efficiency performances. With the proposed approaches (1) the mutual coupling is suppressed on average by 25dB over its operating frequency range, and (2) the effective aperture area of the array antenna is extended without increase in the array's physical dimensions. Radiation gain and efficiency of the proposed array antenna over its operating range vary from 7.51 dBi to 40.08 dBi, and from 70.51% to 90.11%, respectively. Improvement in gain and efficiency of approximately 60% and 30%, respectively, is achieved with the inclusion of the metasurafce slots. The proposed 34×34 array antenna is proper candidate for applications in Terahertz wireless communication systems.

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Section: Introductionmentioning

confidence: 99%

Study on isolation and radiation behaviours of a 34×34 array-antennas based on SIW and metasurface properties for applications in terahertz band over 125–300 GHz

Alibakhshikenari

Virdee

Limiti

2020

Optik

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“…This antenna finds application in SAR operations working in the X and Ku bands. A full duplex application is investigated in the design proposed in [18], in which the authors used a metamaterial EB gap to achieve isolation of greater than 30 dB for an antenna array of three microstrip patches.…”

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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“…Various techniques have been investigated previously to reduce the mutual coupling between antenna elements by using periodic structure [17][18][19]. In paper [20] [21], mutual coupling reduction is achieved by introducing walls with mushroom PBG etched on them that are located between antenna elements.…”

Section: Introductionmentioning

confidence: 99%

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

Alibakhshikenari¹,

Salvucci²,

Polli³

et al. 2018

2018 22nd International Microwave and Radar Conference (MIKON)

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This paper proposes on an effective mutual coupling suppression technique for planar phased array. This is achieved locating a metamaterial superstrate patch between radiation elements of phased array. The superstrate patch is realised by incorporating slots inside the patch, where the slots are arranged in 2×3 array column. The proposed mutual radiation decoupling technique is implemented on FR-4 substrate. Average coupling suppression of 5 dB is achieved on a low permittivity substrate over its operational frequency band. The proposed technique is (i) simple to implement; (ii) planar design; (iii) easily realised in practice; (iv) overcomes the shortcomings of poor front-to-back ratio previously reported in other radiation suppression techniques; and (v) applicable for densely packed microstrip. Furthermore, the proposed planar technique is highly versatile for various applications having stringent performance requirements.

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EM isolation enhancement based on metamaterial concept in antenna array system to support full-duplex application

Cited by 23 publications

References 9 publications

Study on isolation and radiation behaviours of a 34×34 array-antennas based on SIW and metasurface properties for applications in terahertz band over 125–300 GHz

Study on isolation and radiation behaviours of a 34×34 array-antennas based on SIW and metasurface properties for applications in terahertz band over 125–300 GHz

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

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

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