University of Oulu

D. Delfini, N. Tervo, M. E. Leinonen and A. Pärssinen, "Impact of the Asymmetric Signal Routing on the Wideband Spatial Behavior of Large Modular Phased Arrays," 2023 17th European Conference on Antennas and Propagation (EuCAP), Florence, Italy, 2023, pp. 1-5, doi: 10.23919/EuCAP57121.2023.10133514.

Impact of the asymmetric signal routing on the wideband spatial behavior of large modular phased arrays

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Author: Delfini, Duccio1; Tervo, Nuutti1; Leinonen, Marko E.1;
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, 0.5 MB)
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Language: English
Published: Institute of Electrical and Electronics Engineers, 2023
Publish Date: 2023-06-02


Phased arrays have typically equal lengths for all antenna paths. This paper compares three phased array architectures for 5/6G applications. The first two arrays present unequal-length feeding networks, while the third array is the corporate-fed one. The first array is fed from the center, while the second is fed from the side. The impacts of the unsymmetrical feeding network on the bandwidths are analyzed and compared to the corporate-fed array. We show that side-fed arrays present higher bandwidths for higher steering angles, while center-fed arrays work better in the broadside region. Moreover, side-fed arrays can also be better than corporate-fed ones near the end-fire region, making them a good alternative to reduce the footprint of the feeding networks. Finally, we illustrate that if the feeding point can be varied as a function of the desired steering angle, the broadband performance of the array can be optimized for different steering angles.

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ISBN Print: 978-1-6654-7541-9
DOI: 10.23919/EuCAP57121.2023.10133514
Host publication: 17th European Conference on Antennas and Propagation (EuCAP 2023)
Conference: European Conference on Antennas and Propagation
Type of Publication: A4 Article in conference proceedings
Field of Science: 213 Electronic, automation and communications engineering, electronics
Funding: This work was supported in part by the Academy of Finland6Genesis Flagship (grant no 346208) and Business Finlandproject RFSampo (3071/31/2021).
Academy of Finland Grant Number: 346208
Detailed Information: 346208 (Academy of Finland Funding decision)
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