A two element EBG-inspired UWB MIMO antenna with triple band notched characteristics and high isolation

Kapure, Vijay Ramesh; Rathod, Surendra S.

doi:10.1007/s12046-022-02055-2

Cited by 7 publications

(1 citation statement)

References 16 publications

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“…EBG structures are commonly used in 5G millimeter-wave applications to increase isolation between MIMO antenna elements by restricting the movement of surface current waves [ 23 , 24 ]. Studies have reported EBG structures providing isolation values of over 25 dB [ 25 ], with other studies achieving 23 dB isolation values between radiating antennas [ 26 ]. However, the complexity and production difficulties of EBG designs, low bandwidth, and low gain values have limited the use of this method.…”

Section: Introductionmentioning

confidence: 99%

A Novel High Isolation 4-Port Compact MIMO Antenna with DGS for 5G Applications

Güler

Keskin

2023

Micromachines

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This paper presents the design and realization of a simple and low-profile, four-port multiple-input-multiple-output (MIMO) antenna operating in a mm-wave band supporting 5G communication technologies. As part of the design methodology, the initial stage involved the development of a conventional monopole patch antenna optimized for operation at 26 GHz, which was matched to a 50 Ω stepped feed line. Afterward, a square-shaped defected ground structure (DGS) with semi-circle slots on the edges was placed on the ground to improve the isolation, and the circular and rectangular slots were incorporated as DGSs to optimize the antenna impedance bandwidth. Etching semi-circular-shaped slots on the ground plane achieved more than 34.2 dB isolation in the 26 GHz operating band. In addition, an arrangement of four symmetrical radiating elements was positioned orthogonally to minimize the antenna’s physical size and improve the isolation. The proposed MIMO antenna’s overall dimension was 25 × 25 mm2, which was printed on a Rogers 5880 substrate at a width of 0.787 mm and εr = 2.2. The proposed antenna covered the 5G mm-wave band with a 10 dB bandwidth ranging from 25.28–28.02 GHz, whereas the maximum gain attained for the proposed structure was 8.72 dBi. Additionally, the implementation of these slots effectively mitigated mutual coupling, resulting in reduced envelope correlation coefficient (ECC) values. Furthermore, other MIMO performance metrics, including channel capacity loss (CCL), mean effective gain (MEG), and diversity gain (DG), were analyzed for the proposed structure. The obtained results indicate its suitability for various usage areas, such as smart devices, mobile phones, and sensors in 5G applications.

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Section: Introductionmentioning

confidence: 99%

A Novel High Isolation 4-Port Compact MIMO Antenna with DGS for 5G Applications

Güler

Keskin

2023

Micromachines

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Quad-Port MIMO Antenna System for n79-5G and WLAN Wireless Communication Applications

Upadhyaya,

Pandya,

Patel

et al. 2024

Lecture Notes in Networks and Systems

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Compact ACS-fed MIMO antenna with dual-band notch characteristics for UWB applications

Lu,

Lin,

Wang

et al. 2023

Int. J. Microw. Wireless Technol.

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An ultra-wideband (UWB) and compact-size four-port multiple input multiple output (MIMO) antenna with a footprint of 34 mm × 34 mm fed by an asymmetric coplanar strip (ACS) is investigated. The proposed antenna is composed of four orthogonally placed identical modified elliptical-shaped radiators and achieves an impedance bandwidth of 3.4–12.2 GHz. By etching two inverted L-shaped slots in the radiator element, WLAN band and X-band are rejected in the operating communication range. Because of the usage of a meander line decoupler, the isolation enhancement at the 8–12 GHz band is achieved and the isolation is more than 18 dB for most of the UWB range. The performance of the proposed antenna is studied in terms of isolation between each port, radiation pattern, current distribution, gain, envelope correlation coefficient, diversity gain, and total active reflection coefficient. The compact size and reduced complexity make the proposed design highly suitable for portable devices.

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A two element EBG-inspired UWB MIMO antenna with triple band notched characteristics and high isolation

Cited by 7 publications

References 16 publications

A Novel High Isolation 4-Port Compact MIMO Antenna with DGS for 5G Applications

A Novel High Isolation 4-Port Compact MIMO Antenna with DGS for 5G Applications

Quad-Port MIMO Antenna System for n79-5G and WLAN Wireless Communication Applications

Compact ACS-fed MIMO antenna with dual-band notch characteristics for UWB applications

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