Design of a MIMO antenna with improved isolation using meta-material

Lee, Mi Kyung; Chung, Haeil; Ha, Jong‐Myung; Choi, Jaehoon

doi:10.1109/iwat.2011.5752307

Cited by 11 publications

(5 citation statements)

References 6 publications

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“…There are a number of techniques that are used to enhance the isolation between the antennas. Reported techniques in literature include the introduction of the decoupling structures [4], modifications in the ground plane [5][6][7], lumped component filters [8], neutralization strips [9][10][11], introduction of resonating structures near the antennas [12], antenna orientation [13] and the use of metamaterials [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

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Isolation Improvement in a Dual-Band Dual-Element Mimo Antenna System Using Capacitively Loaded Loops

Sharawi¹,

Numan²,

Aloi³

2013

PIER

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Abstract-A dual-band dual-element multiple-input-multiple-output (MIMO) antenna system with enhanced isolation is proposed. The MIMO antenna system is based on printed 4-shaped antenna elements. Dual band isolation is achieved by using an array of printed capacitively loaded loops (CLLs) on the top side of the board for high band isolation improvement and a complementary CLL structure on the GND plane of the antenna for lower band isolation improvement. The lower band of operation covers 827-853 MHz and the higher band covers 2.3-2.98 GHz. Two prototypes were investigated to access the effect of the isolation mechanism. Measured isolation improvement of 10 dB was observed in the lower operating band while the improvement in the higher band was approximately 2.5 dB. The isolation improvement was at the expense of 5% reduction in efficiency. The measured gain patterns as well MIMO figures of merits such as the correlation factor, TARC and MEG were investigated as well.

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Section: Introductionmentioning

confidence: 99%

“…6 dB isolation improvement was obtained. In [15], non-planar split ring resonators (SRRs) were used to enhance the isolation between two radiating elements (monopoles) operating in the 3.38-3.7 GHz frequency band. The maximum isolation within the desired band was improved by about 3 dB.…”

Section: Introductionmentioning

confidence: 99%

Isolation Improvement in a Dual-Band Dual-Element Mimo Antenna System Using Capacitively Loaded Loops

Sharawi¹,

Numan²,

Aloi³

2013

PIER

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show abstract

“…In other words, the utilization of electromagnetic band gap (EBG) structure has the ability to enhance the isolation as well as increase the MIMO antenna performance [10][11][12]. The work in [13] presents a MIMO antenna with improved isolation using meta-material structure. In [14][15][16], several x-band MIMO antennas with different techniques were designed and fabricated.…”

Section: Introductionmentioning

confidence: 99%

Design of a Four-Element Mimo Antenna With Low Mutual Coupling in a Small Size for Satelitte Applications

Dkiouak¹,

Zakriti²,

Ouahabi³

et al. 2019

PIER M

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In this paper, a compact planar mono-band multiple input multiple output (MIMO) antenna with four monopole elements is presented for X-band satellite applications (7.2-7.8 GHz). The MIMO antenna resonates at 7.5 GHz, with high isolation (more than 26 dB) between its ports. It consists of a four closely arranged symmetric monopole antennas with edge-to-edge distance of 7.2 mm (0.18λ). In the top face, different forms are loaded at the rectangular patch. A U-shaped slot defected ground structure (DGS) has embedded in the ground plane. The prototype of the proposed MIMO antenna is simulated, fabricated, and measured to examine the performance of this antenna in terms of S parameters, radiation patterns, envelope of correlation coefficient (ECC), and diversity gain (DG). As a result, the presented antenna has a high isolation (S 12 < −26 dB) at 7.5 GHz with an impedance bandwidth of 430 MHz (7.28 GHz-7.71 GHz), which covers the X-band applications. The diversity gain is about 10, and the envelope correlation coefficient of antenna is less than 0.02 which means that the antenna has high performance at the resonance frequency.

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“…Some effective techniques have been put forward in refs. [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16], which include: DMN (decoupling and matching network) composed of series/shunt reactive elements [2], eigenmode DMN approach [3], [4][5][6][7], electromagnetic band-gap (EBG) [8][9][10][11], ELC Resonator [12], neutralization line [13,14], and using meta-material structure [15,16].…”

Section: Introductionmentioning

confidence: 99%

Design of a compact hexagonal structured dual band MIMO antenna using orthogonal polarization for WLAN and satellite applications

Dkiouak

Ouahabi

Zakriti

et al. 2019

IJECE

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In this paper, a compact dual band multiple-input multiple-output (MIMO) antenna system for WLAN and X-band satellite applications (2.4/9.8 GHz respectively) is proposed. On the top face of the substrate, two antenna elements with a size of 20 × 24 mm2 are placed side by side and fed with matched orthogonal micro-strip lines. The two antenna elements have orthogonal polarization which can reduce the mutual coupling between its ports. The designed antenna system is fabricated and measured to validate the simulation results. The impedance bandwidths are about 370 MHz (2.19 to 2.56 GHz) and 630 MHz (9.44 to 10.07 GHz), while the obtained isolation is greater than 14 dB at the operating bands. Furthermore, the envelope correlation is less than 0.052 and 0.008 at 2.4 and 9.8 GHz, respectively. Hence the diversity gain is higher than 9.98 in the frequency bands of interest.

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Design of a MIMO antenna with improved isolation using meta-material

Cited by 11 publications

References 6 publications

Isolation Improvement in a Dual-Band Dual-Element Mimo Antenna System Using Capacitively Loaded Loops

Isolation Improvement in a Dual-Band Dual-Element Mimo Antenna System Using Capacitively Loaded Loops

Design of a Four-Element Mimo Antenna With Low Mutual Coupling in a Small Size for Satelitte Applications

Design of a compact hexagonal structured dual band MIMO antenna using orthogonal polarization for WLAN and satellite applications

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