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Wireless Personal Communications
Published in: Wireless Personal Communications 2/2017

22-11-2016

An Efficient Method for Investigating and Optimizing Near Field Characteristics of Planar Antenna Arrays

Author: Shun-Ping Chen

Published in: Wireless Personal Communications | Issue 2/2017

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Abstract

Near field focusing of 2-dimensional planar antenna arrays is analyzed by using a very efficient analytical method, instead of time consuming numerical methods. This is especially important for the design and optimization process for dynamic beam forming and other near field applications. Antenna arrays show increased side lobes at larger beam steering angles in the near field. Conventional techniques such as inhomogeneous but symmetrical amplitude illuminations to assure a certain side lobe suppression level do not reduce the side lobes completely or sufficiently for the near field case, especially in the back fire direction. In this paper, asymmetrical amplitude weighting coefficients in combination with Chebyschev are used to further improve the side lobe suppression over a larger angular range.
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Literature
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Carter, W. H. (1999). On refocusing a radio telescope to image sources in the near field of the antenna array. IEEE Transactions on Antennas and Propagation, 37, 314–319.CrossRef
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Grubert, J. (2006) A measurement technique for characterization of vehicles in wireless communications. PhD Thesis (in German) of Technical University Hamburg-Harburg, Cuvillier Verlag Goettingen
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Ebadi, S., Gatti, R. V., Marcaccioli, L., & Sorrentinoi, R. (2009) Near field focusing in large reflector array antennas using 1-bit digital phase shifters. Proceedings of the 39th European microwave conference, pp. 1029–1032
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Chen, S.P. (2014) Improved Near Field Focusing of Antenna Arrays with Novel Weighting Coefficients. IEEE WiVeC 2014, 6th international symposium on wireless vehicular communications
Metadata
Title
An Efficient Method for Investigating and Optimizing Near Field Characteristics of Planar Antenna Arrays
Author
Shun-Ping Chen
Publication date
22-11-2016
Publisher
Springer US
Published in
Wireless Personal Communications / Issue 2/2017
Print ISSN: 0929-6212
Electronic ISSN: 1572-834X
DOI
https://doi.org/10.1007/s11277-016-3888-2

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