University of Oulu

D. Acharya, J. Kokkoniemi, A. Pärssinen and M. Berg, "Performance Comparison of Near-Field Focused and Conventional Phased Antenna Arrays at 140 GHz," 2021 Joint European Conference on Networks and Communications & 6G Summit (EuCNC/6G Summit), 2021, pp. 1-6, doi: 10.1109/EuCNC/6GSummit51104.2021.9482501

Performance comparison of near-field focused and conventional phased antenna arrays at 140 GHz

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Author: Acharya, Dinesh1; Kokkoniemi, Joonas1; Pärssinen, Aarno1;
Organizations: 1Centre for Wireless Communications (CWC), University of Oulu, P.O. Box 4500, 90014 Oulu, Finland
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 0.3 MB)
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Language: English
Published: Institute of Electrical and Electronics Engineers, 2021
Publish Date: 2021-10-22


The future high frequency systems require very high antenna gains to cope with the large channel losses. In order to obtain large gain and flexible beamforming, large antenna arrays are often considered. With hundreds or thousands of antenna elements, transmit energy is highly concentrated on the target. However, large numbers of antenna elements make the antennas very large compared with the wavelength. Therefore, it is likely for the user to be in the near field of the array. In this region, the maximum antenna gain is obtained by focusing the energy on the desired locations. The downside is a need to know the exact locations of the radios. This paper focuses on analysis of the traditional linear phase beam steering and near field focusing beam steering and the impact of the user location uncertainty on the achievable antenna gain. The uncertainty in the user location can arise, for instance, due to user mobility. The results show that the near field focusing gives superior gain in the near field of the antenna array, but is more sensitive to the user location information than the linear phase beam steering.

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Series: European Conference on Networks and Communications
ISSN: 2475-6490
ISSN-E: 2575-4912
ISSN-L: 2475-6490
ISBN: 978-1-6654-1526-2
ISBN Print: 978-1-6654-3021-0
Pages: 1 - 6
Article number: 9482501
DOI: 10.1109/EuCNC/6GSummit51104.2021.9482501
Host publication: Joint 30th European Conference on Networks and Communications and 3rd 6G Summit, EuCNC/6G Summit 2021
Conference: Joint European Conference on Networks and Communications & 6G Summit
Type of Publication: A4 Article in conference proceedings
Field of Science: 213 Electronic, automation and communications engineering, electronics
Funding: This work was supported by Horizon 2020, European Union's Framework Programme for Research and Innovation, under grant agreement no. 871464 (ARIADNE). This work has also been partly funded by the European Commission through the H2020 project Hexa-X (Grant Agreement no. 101015956) and by the Academy of Finland 6Genesis Flagship under grant no. 318927.
EU Grant Number: (871464) ARIADNE - Artificial Intelligence Aided D-band Network for 5G Long Term Evolution
(101015956) Hexa-X - A flagship for B5G/6G vision and intelligent fabric of technology enablers connecting human, physical, and digital worlds
Academy of Finland Grant Number: 318927
Detailed Information: 318927 (Academy of Finland Funding decision)
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