On the Impact of Spillover Losses in 28 GHz Rotman Lens Arrays for 5G Applications

Muhammad Ali Babar Abbasi; Harsh Tataria; Vincent F.  Fusco; Michail Matthaiou

doi:10.1109/IMWS-5G.2018.8484443

On the Impact of Spillover Losses in 28 GHz Rotman Lens Arrays for 5G Applications

Muhammad Ali Babar Abbasi, Harsh Tataria, Vincent F. Fusco, Michail Matthaiou

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

9 Citations (Scopus)

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Abstract

This work demonstrates the sensitivity of lens antenna arrays operating at millimeter-wave (mmWave) frequencies. Considering a Rotman lens array in receive mode, our investigation focuses on its most imperative defect: aberration of electromagnetic (EM) energy. Aberration leads to spillover of electric fields to neighboring ports, reducing the lens’ ability to focus the EM energy to a desired port. With full EM simulations, we design a 28 GHz, 13 beam and 13 array port Rotman lens array to characterize its performance with the aforementioned impairment. Our findings show that the impact of aberration is more pronounced when the beam angles are close to the array end-fire. More critically, the corresponding impact of aberration on the desired signal and interference powers is also investigated for an uplink multiuser cellular system operating at 28 GHz. The presented results can be used as a reference to re-calibrate our expectations for Rotman lens arrays at mmWave frequencies.

Original language	English
Title of host publication	IEEE MTT-S International Microwave Workshop Series on 5G Hardware and System Technology (IMWS-5G)
Place of Publication	Dublin, Ireland
Publisher	Institute of Electrical and Electronics Engineers Inc.
Number of pages	3
DOIs	https://doi.org/10.1109/IMWS-5G.2018.8484443
Publication status	Early online date - 08 Oct 2018
Event	IEEE MTT-S International Microwave Workshop Series on 5G Hardware and System Technologies (IMWS-5G) 2018 - University College Dublin , Dublin, Ireland Duration: 30 Aug 2018 → 31 Aug 2018 http://imws-5g.mtt.org/index.html

Conference

Conference	IEEE MTT-S International Microwave Workshop Series on 5G Hardware and System Technologies (IMWS-5G) 2018
Abbreviated title	IMWS-5G 2018
Country/Territory	Ireland
City	Dublin
Period	30/08/2018 → 31/08/2018
Internet address	http://imws-5g.mtt.org/index.html

Keywords

Lens arrays
Spillover losses
Millimeter Wave
5G

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10.1109/IMWS-5G.2018.8484443Licence: Unspecified

Impact of Spillover Losses in 28 GHz Rotman Lens Arrays for 5G Applications
Copyright 2018 IEEE,. This work is made available online in accordance with the publisher’s policies. Please refer to any applicable terms of use of the publisher.
Accepted author manuscript, 1.79 MBLicence: Unspecified

On the Impact of Spillover Losses in 28 GHz Rotman Lens Arrays for 5G
Abbasi, M. A. B. (Creator), Queen's University Belfast, 04 Mar 2019
DOI: 10.17034/bda3b557-2760-48f1-b2b8-bc8efca126b8
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title = "On the Impact of Spillover Losses in 28 GHz Rotman Lens Arrays for 5G Applications",

abstract = "This work demonstrates the sensitivity of lens antenna arrays operating at millimeter-wave (mmWave) frequencies. Considering a Rotman lens array in receive mode, our investigation focuses on its most imperative defect: aberration of electromagnetic (EM) energy. Aberration leads to spillover of electric fields to neighboring ports, reducing the lens{\textquoteright} ability to focus the EM energy to a desired port. With full EM simulations, we design a 28 GHz, 13 beam and 13 array port Rotman lens array to characterize its performance with the aforementioned impairment. Our findings show that the impact of aberration is more pronounced when the beam angles are close to the array end-fire. More critically, the corresponding impact of aberration on the desired signal and interference powers is also investigated for an uplink multiuser cellular system operating at 28 GHz. The presented results can be used as a reference to re-calibrate our expectations for Rotman lens arrays at mmWave frequencies.",

keywords = "Lens arrays, Spillover losses, Millimeter Wave, 5G",

author = "Abbasi, {Muhammad Ali Babar} and Harsh Tataria and Fusco, {Vincent F.} and Michail Matthaiou",

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publisher = "Institute of Electrical and Electronics Engineers Inc.",

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Abbasi, MAB, Tataria, H, Fusco, VF & Matthaiou, M 2018, On the Impact of Spillover Losses in 28 GHz Rotman Lens Arrays for 5G Applications. in IEEE MTT-S International Microwave Workshop Series on 5G Hardware and System Technology (IMWS-5G). Institute of Electrical and Electronics Engineers Inc., Dublin, Ireland, IEEE MTT-S International Microwave Workshop Series on 5G Hardware and System Technologies (IMWS-5G) 2018, Dublin, Ireland, 30/08/2018. https://doi.org/10.1109/IMWS-5G.2018.8484443

On the Impact of Spillover Losses in 28 GHz Rotman Lens Arrays for 5G Applications. / Abbasi, Muhammad Ali Babar; Tataria, Harsh; Fusco, Vincent F. et al.

IEEE MTT-S International Microwave Workshop Series on 5G Hardware and System Technology (IMWS-5G). Dublin, Ireland : Institute of Electrical and Electronics Engineers Inc., 2018.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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T1 - On the Impact of Spillover Losses in 28 GHz Rotman Lens Arrays for 5G Applications

AU - Abbasi, Muhammad Ali Babar

AU - Tataria, Harsh

AU - Fusco, Vincent F.

AU - Matthaiou, Michail

PY - 2018/10/8

Y1 - 2018/10/8

N2 - This work demonstrates the sensitivity of lens antenna arrays operating at millimeter-wave (mmWave) frequencies. Considering a Rotman lens array in receive mode, our investigation focuses on its most imperative defect: aberration of electromagnetic (EM) energy. Aberration leads to spillover of electric fields to neighboring ports, reducing the lens’ ability to focus the EM energy to a desired port. With full EM simulations, we design a 28 GHz, 13 beam and 13 array port Rotman lens array to characterize its performance with the aforementioned impairment. Our findings show that the impact of aberration is more pronounced when the beam angles are close to the array end-fire. More critically, the corresponding impact of aberration on the desired signal and interference powers is also investigated for an uplink multiuser cellular system operating at 28 GHz. The presented results can be used as a reference to re-calibrate our expectations for Rotman lens arrays at mmWave frequencies.

AB - This work demonstrates the sensitivity of lens antenna arrays operating at millimeter-wave (mmWave) frequencies. Considering a Rotman lens array in receive mode, our investigation focuses on its most imperative defect: aberration of electromagnetic (EM) energy. Aberration leads to spillover of electric fields to neighboring ports, reducing the lens’ ability to focus the EM energy to a desired port. With full EM simulations, we design a 28 GHz, 13 beam and 13 array port Rotman lens array to characterize its performance with the aforementioned impairment. Our findings show that the impact of aberration is more pronounced when the beam angles are close to the array end-fire. More critically, the corresponding impact of aberration on the desired signal and interference powers is also investigated for an uplink multiuser cellular system operating at 28 GHz. The presented results can be used as a reference to re-calibrate our expectations for Rotman lens arrays at mmWave frequencies.

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KW - Spillover losses

KW - Millimeter Wave

KW - 5G

U2 - 10.1109/IMWS-5G.2018.8484443

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M3 - Conference contribution

BT - IEEE MTT-S International Microwave Workshop Series on 5G Hardware and System Technology (IMWS-5G)

PB - Institute of Electrical and Electronics Engineers Inc.

CY - Dublin, Ireland

T2 - IEEE MTT-S International Microwave Workshop Series on 5G Hardware and System Technologies (IMWS-5G) 2018

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On the Impact of Spillover Losses in 28 GHz Rotman Lens Arrays for 5G Applications

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On the Impact of Spillover Losses in 28 GHz Rotman Lens Arrays for 5G

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