Reduction of Main Beam-Blockage in an Integrated 5G Array with a Metal-Frame Antenna

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Resumé

In this paper, a novel technique is introduced to reduce the handset metal-frame blockage to the main beam of a millimeter-wave (mm-wave) endfire antenna array. The metal-frame blockage to mm-wave antennas with different polarizations is investigated first. It is found that the blockage is more severe for horizontal polarization than for vertical polarization. The effect of the metal bezel on an mm-wave array with horizontal polarization can be significantly decreased if two-tilted layers of coupled metal strips are placed at the borders of the frame. Furthermore, these metal strips are shown not to disturb the mm-wave antennas with vertical polarization. Different detailed design considerations are studied. To further demonstrate the idea, a 5G Vivaldi array (with horizontal polarization) is designed and integrated with a metal frame. The frame functions as a low-frequency antenna, operating in two frequency bands of 865-990 and 1358-2786 MHz. The mm-wave array with four elements operates at the frequency band 24.25-27.5 GHz and can scan ±60° in endfire direction, with a realized gain higher than 7 dBi in most of the frequency range.

OriginalsprogEngelsk
Artikelnummer8648488
TidsskriftI E E E Transactions on Antennas and Propagation
Vol/bind67
Udgave nummer5
Sider (fra-til)3161-3170
Antal sider10
ISSN0018-926X
DOI
StatusUdgivet - maj 2019

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Millimeter waves
Polarization
Antennas
Metals
Strip metal
Frequency bands
Antenna arrays

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@article{dccae273438f4175a91f9c53bd5c1bbb,
title = "Reduction of Main Beam-Blockage in an Integrated 5G Array with a Metal-Frame Antenna",
abstract = "In this paper, a novel technique is introduced to reduce the handset metal-frame blockage to the main beam of a millimeter-wave (mm-wave) endfire antenna array. The metal-frame blockage to mm-wave antennas with different polarizations is investigated first. It is found that the blockage is more severe for horizontal polarization than for vertical polarization. The effect of the metal bezel on an mm-wave array with horizontal polarization can be significantly decreased if two-tilted layers of coupled metal strips are placed at the borders of the frame. Furthermore, these metal strips are shown not to disturb the mm-wave antennas with vertical polarization. Different detailed design considerations are studied. To further demonstrate the idea, a 5G Vivaldi array (with horizontal polarization) is designed and integrated with a metal frame. The frame functions as a low-frequency antenna, operating in two frequency bands of 865-990 and 1358-2786 MHz. The mm-wave array with four elements operates at the frequency band 24.25-27.5 GHz and can scan ±60° in endfire direction, with a realized gain higher than 7 dBi in most of the frequency range.",
keywords = "5G mobile communication, Vivaldi antennas, antenna array, millimeter-wave (mm-wave) integrated circuit",
author = "{Rodriguez Cano}, Rocio and Shuai Zhang and Kun Zhao and Pedersen, {Gert F.}",
year = "2019",
month = "5",
doi = "10.1109/TAP.2019.2900407",
language = "English",
volume = "67",
pages = "3161--3170",
journal = "I E E E Transactions on Antennas and Propagation",
issn = "0018-926X",
publisher = "IEEE",
number = "5",

}

Reduction of Main Beam-Blockage in an Integrated 5G Array with a Metal-Frame Antenna. / Rodriguez Cano, Rocio; Zhang, Shuai; Zhao, Kun; Pedersen, Gert F.

I: I E E E Transactions on Antennas and Propagation, Bind 67, Nr. 5, 8648488, 05.2019, s. 3161-3170.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Reduction of Main Beam-Blockage in an Integrated 5G Array with a Metal-Frame Antenna

AU - Rodriguez Cano, Rocio

AU - Zhang, Shuai

AU - Zhao, Kun

AU - Pedersen, Gert F.

PY - 2019/5

Y1 - 2019/5

N2 - In this paper, a novel technique is introduced to reduce the handset metal-frame blockage to the main beam of a millimeter-wave (mm-wave) endfire antenna array. The metal-frame blockage to mm-wave antennas with different polarizations is investigated first. It is found that the blockage is more severe for horizontal polarization than for vertical polarization. The effect of the metal bezel on an mm-wave array with horizontal polarization can be significantly decreased if two-tilted layers of coupled metal strips are placed at the borders of the frame. Furthermore, these metal strips are shown not to disturb the mm-wave antennas with vertical polarization. Different detailed design considerations are studied. To further demonstrate the idea, a 5G Vivaldi array (with horizontal polarization) is designed and integrated with a metal frame. The frame functions as a low-frequency antenna, operating in two frequency bands of 865-990 and 1358-2786 MHz. The mm-wave array with four elements operates at the frequency band 24.25-27.5 GHz and can scan ±60° in endfire direction, with a realized gain higher than 7 dBi in most of the frequency range.

AB - In this paper, a novel technique is introduced to reduce the handset metal-frame blockage to the main beam of a millimeter-wave (mm-wave) endfire antenna array. The metal-frame blockage to mm-wave antennas with different polarizations is investigated first. It is found that the blockage is more severe for horizontal polarization than for vertical polarization. The effect of the metal bezel on an mm-wave array with horizontal polarization can be significantly decreased if two-tilted layers of coupled metal strips are placed at the borders of the frame. Furthermore, these metal strips are shown not to disturb the mm-wave antennas with vertical polarization. Different detailed design considerations are studied. To further demonstrate the idea, a 5G Vivaldi array (with horizontal polarization) is designed and integrated with a metal frame. The frame functions as a low-frequency antenna, operating in two frequency bands of 865-990 and 1358-2786 MHz. The mm-wave array with four elements operates at the frequency band 24.25-27.5 GHz and can scan ±60° in endfire direction, with a realized gain higher than 7 dBi in most of the frequency range.

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