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

Abbasi, Muhammad Ali Babar; Tataria, Harsh LU ; Fusco, Vincent F and Matthaiou, Michail (2018) 2018 IEEE MTT-S International Microwave Workshop Series on 5G Hardware and System Technologies (IMWS-5G)
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... (More)
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. (Less)
Please use this url to cite or link to this publication:
author
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Abberation, 5G systems, Rotman lens arrays, spectral efficiency
host publication
2018 IEEE MTT-S International Microwave Workshop Series on 5G Hardware and System Technologies (IMWS-5G)
pages
3 pages
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
conference name
2018 IEEE MTT-S International Microwave Workshop Series on 5G Hardware and System Technologies (IMWS-5G)
conference location
Dublin, Ireland
conference dates
2018-08-30 - 2018-08-31
external identifiers
  • scopus:85056415361
ISBN
978-1-5386-1198-2
978-1-5386-1197-5
DOI
10.1109/IMWS-5G.2018.8484443
language
English
LU publication?
no
id
d62d98e8-e8f3-4bb8-a219-a19dde798bb3
date added to LUP
2018-11-27 21:04:36
date last changed
2019-02-20 11:38:02
@inproceedings{d62d98e8-e8f3-4bb8-a219-a19dde798bb3,
  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.},
  author       = {Abbasi, Muhammad Ali Babar and Tataria, Harsh and Fusco, Vincent F  and Matthaiou, Michail},
  isbn         = {978-1-5386-1198-2},
  keyword      = {Abberation,5G systems,Rotman lens arrays,spectral efficiency},
  language     = {eng},
  location     = {Dublin, Ireland},
  month        = {08},
  pages        = {3},
  publisher    = {IEEE--Institute of Electrical and Electronics Engineers Inc.},
  title        = {On the Impact of Spillover Losses in 28 GHz Rotman Lens Arrays for 5G Applications},
  url          = {http://dx.doi.org/10.1109/IMWS-5G.2018.8484443},
  year         = {2018},
}