Mutual coupling reduction of a 2.6 GHz Dual-Element MIMO Antenna System with EBG structures

Liu, Zhuo; Shi, Yike; Shi, Dan; Yougang, Gao

doi:10.1109/ursigass.2014.6929527

Cited by 5 publications

(3 citation statements)

References 3 publications

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“…Therefore, high isolation between the antennas is required [16][17][18]. In recent years, various methods have been proposed to reduce mutual coupling, including orthogonal arrangements [19], uniplanar compact electromagnetic bandgaps (EBGs) [20], mushroom-like EBGs [21], helical-shaped EBGs [22], dumbbell defected ground structures (DGSs) [23], and slotted-complementary split-ring resonators [24].…”

Section: Introductionmentioning

confidence: 99%

High-Isolation 5G Repeater Antenna Using a Novel DGS and an EBG

Kang

Park

Cho³

et al. 2023

J. Electromagn. Eng. Sci

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Repeaters have been widely used to improve communication quality and extend the coverage areas of wireless communication systems. However, mutual coupling between the Tx and Rx antennas significantly deteriorates the performance of repeater systems. This work presents a high-isolation repeater antenna operating in a frequency range of 3.6–3.7 GHz in a 5G communication system. Perpendicularly arranged microstrip patch antennas are used because this arrangement can lead to greater isolation than a parallel arrangement. However, the perpendicular arrangement results in radiation pattern distortion due to the ground mode. A novel defected ground structure (DGS) is developed to suppress the ground mode and simultaneously reduce the mutual coupling between the Tx and Rx antennas. An electromagnetic bandgap (EBG) is additionally employed to further increase isolation. The measurement results of a fabricated repeater antenna show no radiation pattern deformation and an isolation improvement of 28 dB over the repeater antenna without the DGS and EBG.

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Section: Introductionmentioning

confidence: 99%

High-Isolation 5G Repeater Antenna Using a Novel DGS and an EBG

Kang

Park

Cho³

et al. 2023

J. Electromagn. Eng. Sci

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“…The trend in the industry is getting smaller and more integrated devices, making difficult to keep their MIMO antennas away to each other. Many techniques intended to reduce the electromagnetic coupling between MIMO ports can be found in literature, for instance neutralization lines [3][4][5], EBG and metamaterial structures [6][7][8], modifications on the ground plane between the antennas [9], [10], coupling/decoupling networks [11], [12], parasitic scatterers [13], [14], and so on. It is noticeable that the efforts had been focused in one-element antennas, and far from abundant work had been done about improving the decoupling between antennas consisting of array of radiators.…”

Section: Introductionmentioning

confidence: 99%

Mutual Coupling Reduction of Two 2x1 Triangular-Patch Antenna Array Using a Single Neutralization Line for MIMO Applications

2018

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In this paper, a novel structure of two interlaced antenna arrays for MIMO applications is presented. It consists of two 2  1 triangular patch array antennas, which have all elements separated by a short distance among them (0.22λ 0), where mutual coupling can be very poor (S 21 =-7.81 dB). To overcome such weakness, a simple and efficient method is used: one neutralization line (NL) is introduced to increase the decoupling between both ports, reaching up to-29 dB at the central frequency, and below-20 dB over a large bandwidth. The whole MIMO antenna array has dimensions of 1.56λ 0 × 0.3λ 0 and has a gain of 9.11 dBi. Its diversity parameters describe it as a useful radiator for MIMO communications systems.

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“…A dual‐feed microstrip patch antenna with defected ground structure to increase port isolation was studied . The works on mutual coupling reduction by inserting the mushroom‐type electromagnetic band gap structure or modifying the ground plane shape were proposed. Unfortunately, these studies require larger size and more complex antenna configuration.…”

Section: Introductionmentioning

confidence: 99%

Miniaturized triple‐band antennas with high isolation for mimo antenna system applications

Kuo

Liou

Mao

2015

Micro & Optical Tech Letters

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In this article, a miniaturized multiband antenna for multiple input and multiple output (MIMO) system is proposed. The proposed structure consists of two methods to obtain size reduction with a meandering monopole antenna and a quarter‐wavelength slot antenna. The antenna element is implemented on a FR4 PCB with dimensions of 20.6 × 29.5 × 0.8 mm3 for USB dongle applications. Measurements show that the isolation is below l0 dB and |S11| and |S22| is smaller than −6 dB at 2.5 GHz, 3.5 GHz, and 5.5 GHz. To evaluate the mutual coupling effect of MIMO system, the correlation coefficients are determined by the measured scattering parameters. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:2555–2558, 2015

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Mutual coupling reduction of a 2.6 GHz Dual-Element MIMO Antenna System with EBG structures

Cited by 5 publications

References 3 publications

High-Isolation 5G Repeater Antenna Using a Novel DGS and an EBG

High-Isolation 5G Repeater Antenna Using a Novel DGS and an EBG

Mutual Coupling Reduction of Two 2x1 Triangular-Patch Antenna Array Using a Single Neutralization Line for MIMO Applications

Miniaturized triple‐band antennas with high isolation for mimo antenna system applications

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