8-port semi-circular arc mimo antenna with an inverted l-strip loaded connected ground for uwb applications

Tathababu Addepalli; Arpan Desai; Issa Elfergani; N. Anveshkumar; Jayshri Kulkarni; Chemseddine Zebiri; Jonathan Rodriguez; Raed Abd-Alhameed

doi:10.3390/electronics10121476

8-port semi-circular arc mimo antenna with an inverted l-strip loaded connected ground for uwb applications

Tathababu Addepalli, Arpan Desai, Issa Elfergani^*, N. Anveshkumar, Jayshri Kulkarni, Chemseddine Zebiri, Jonathan Rodriguez, Raed Abd-Alhameed

^*Corresponding author for this work

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Abstract

Multiple-input multiple-output (MIMO) antennas with four and eight elements having connected grounds are designed for ultra-wideband applications. Careful optimization of the lines connecting the grounds leads to reduced mutual coupling amongst the radiating patches. The proposed antenna has a modified substrate geometry and comprises a circular arc-shaped conductive element on the top with the modified ground plane geometry. Polarization diversity and isolation are achieved by replicating the elements orthogonally forming a plus shape antenna structure. The modified ground plane consists of an inverted L strip and semi ellipse slot over the partial ground that helps the antenna in achieving effective wide bandwidth spanning from (117.91%) 2.84–11 GHz. Both 4/8-port antenna achieves a size of 0.61 λ × 0.61 λ mm² (lowest frequency) where 4-port antenna is printed on FR4 substrate. The 4-port UWB MIMO antenna attains wide impedance bandwidth, Omni-directional pattern, isolation >15 dB, ECC < 0.015, and average gain >4.5 dB making the MIMO antenna suitable for portable UWB applications. Four element antenna structure is further extended to 8-element configuration with the connected ground where the decent value of IBW, isolation, and ECC is achieved.

Original language	English
Article number	1476
Number of pages	19
Journal	Electronics
Volume	10
Issue number	12
DOIs	https://doi.org/10.3390/electronics10121476
Publication status	Published - 19 Jun 2021
Externally published	Yes

Keywords

4-elements
8-elements
ECC
Isolation
MIMO
UWB

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10.3390/electronics10121476Licence: CC BY

Version of Record with a CC BY LicenceFinal published version, 9.49 MBLicence: CC BY

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title = "8-port semi-circular arc mimo antenna with an inverted l-strip loaded connected ground for uwb applications",

abstract = "Multiple-input multiple-output (MIMO) antennas with four and eight elements having connected grounds are designed for ultra-wideband applications. Careful optimization of the lines connecting the grounds leads to reduced mutual coupling amongst the radiating patches. The proposed antenna has a modified substrate geometry and comprises a circular arc-shaped conductive element on the top with the modified ground plane geometry. Polarization diversity and isolation are achieved by replicating the elements orthogonally forming a plus shape antenna structure. The modified ground plane consists of an inverted L strip and semi ellipse slot over the partial ground that helps the antenna in achieving effective wide bandwidth spanning from (117.91%) 2.84–11 GHz. Both 4/8-port antenna achieves a size of 0.61 λ × 0.61 λ mm2 (lowest frequency) where 4-port antenna is printed on FR4 substrate. The 4-port UWB MIMO antenna attains wide impedance bandwidth, Omni-directional pattern, isolation >15 dB, ECC < 0.015, and average gain >4.5 dB making the MIMO antenna suitable for portable UWB applications. Four element antenna structure is further extended to 8-element configuration with the connected ground where the decent value of IBW, isolation, and ECC is achieved.",

keywords = "4-elements, 8-elements, ECC, Isolation, MIMO, UWB",

author = "Tathababu Addepalli and Arpan Desai and Issa Elfergani and N. Anveshkumar and Jayshri Kulkarni and Chemseddine Zebiri and Jonathan Rodriguez and Raed Abd-Alhameed",

note = "Funding Information: Acknowledgments: This work is funded by FCT/MCTES through national funds and when applicable co-funded EU funds under the project UIDB/50008/2020-UIDP/50008/2020. Authors Issa Elfergani and Jonathan Rodriguez would like to acknowledge the POSITION-II project (ECSEL joint Undertaking under grant number Ecsel-7831132-Position-II-2017-IA). Funding Information: Funding: This work is funded by FCT/MCTES through national funds and when applicable co-funded EU funds under the project UIDB/50008/2020-UIDP/50008/2020. Publisher Copyright: {\textcopyright} 2021 by the authors. Licensee MDPI, Basel, Switzerland.",

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language = "English",

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T1 - 8-port semi-circular arc mimo antenna with an inverted l-strip loaded connected ground for uwb applications

AU - Addepalli, Tathababu

AU - Desai, Arpan

AU - Elfergani, Issa

AU - Anveshkumar, N.

AU - Kulkarni, Jayshri

AU - Zebiri, Chemseddine

AU - Rodriguez, Jonathan

AU - Abd-Alhameed, Raed

N1 - Funding Information: Acknowledgments: This work is funded by FCT/MCTES through national funds and when applicable co-funded EU funds under the project UIDB/50008/2020-UIDP/50008/2020. Authors Issa Elfergani and Jonathan Rodriguez would like to acknowledge the POSITION-II project (ECSEL joint Undertaking under grant number Ecsel-7831132-Position-II-2017-IA). Funding Information: Funding: This work is funded by FCT/MCTES through national funds and when applicable co-funded EU funds under the project UIDB/50008/2020-UIDP/50008/2020. Publisher Copyright: © 2021 by the authors. Licensee MDPI, Basel, Switzerland.

PY - 2021/6/19

Y1 - 2021/6/19

N2 - Multiple-input multiple-output (MIMO) antennas with four and eight elements having connected grounds are designed for ultra-wideband applications. Careful optimization of the lines connecting the grounds leads to reduced mutual coupling amongst the radiating patches. The proposed antenna has a modified substrate geometry and comprises a circular arc-shaped conductive element on the top with the modified ground plane geometry. Polarization diversity and isolation are achieved by replicating the elements orthogonally forming a plus shape antenna structure. The modified ground plane consists of an inverted L strip and semi ellipse slot over the partial ground that helps the antenna in achieving effective wide bandwidth spanning from (117.91%) 2.84–11 GHz. Both 4/8-port antenna achieves a size of 0.61 λ × 0.61 λ mm2 (lowest frequency) where 4-port antenna is printed on FR4 substrate. The 4-port UWB MIMO antenna attains wide impedance bandwidth, Omni-directional pattern, isolation >15 dB, ECC < 0.015, and average gain >4.5 dB making the MIMO antenna suitable for portable UWB applications. Four element antenna structure is further extended to 8-element configuration with the connected ground where the decent value of IBW, isolation, and ECC is achieved.

AB - Multiple-input multiple-output (MIMO) antennas with four and eight elements having connected grounds are designed for ultra-wideband applications. Careful optimization of the lines connecting the grounds leads to reduced mutual coupling amongst the radiating patches. The proposed antenna has a modified substrate geometry and comprises a circular arc-shaped conductive element on the top with the modified ground plane geometry. Polarization diversity and isolation are achieved by replicating the elements orthogonally forming a plus shape antenna structure. The modified ground plane consists of an inverted L strip and semi ellipse slot over the partial ground that helps the antenna in achieving effective wide bandwidth spanning from (117.91%) 2.84–11 GHz. Both 4/8-port antenna achieves a size of 0.61 λ × 0.61 λ mm2 (lowest frequency) where 4-port antenna is printed on FR4 substrate. The 4-port UWB MIMO antenna attains wide impedance bandwidth, Omni-directional pattern, isolation >15 dB, ECC < 0.015, and average gain >4.5 dB making the MIMO antenna suitable for portable UWB applications. Four element antenna structure is further extended to 8-element configuration with the connected ground where the decent value of IBW, isolation, and ECC is achieved.

KW - 4-elements

KW - 8-elements

KW - ECC

KW - Isolation

KW - MIMO

KW - UWB

U2 - 10.3390/electronics10121476

DO - 10.3390/electronics10121476

M3 - Article

AN - SCOPUS:85108165667

VL - 10

JO - Electronics

JF - Electronics

SN - 2079-9292

IS - 12

M1 - 1476

ER -

8-port semi-circular arc mimo antenna with an inverted l-strip loaded connected ground for uwb applications

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Keywords

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