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Accelerated computation of the free space Green's function of semi-infinite phased arrays of dipoles

In this Communication, we provide an efficient algorithm for the evaluation of the semi-infinite array Green's function (SAGF) for a semi-infinite planar periodic phased array of dipoles in free space. For observation points not too far from the array plane, the algorithm uses a hybrid spectral...

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Published in:	IEEE transactions on antennas and propagation 2006-03, Vol.54 (3), p.1037-1040
Main Authors:	Craeye, C., Capolino, F.
Format:	Article
Language:	English
Subjects:	Acceleration Accelerators Algorithms Antenna radiation patterns Antennas Applied sciences Arrays Asymptotic properties Bandwidth Broadband antennas Dipole antennas Dipoles Exact sciences and technology Frequency Green's function Green's function methods Green's functions Impedance Loaded antennas numerical methods periodic structures Phased arrays Planes Radiocommunications Telecommunications Telecommunications and information theory
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container_title	IEEE transactions on antennas and propagation
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description	In this Communication, we provide an efficient algorithm for the evaluation of the semi-infinite array Green's function (SAGF) for a semi-infinite planar periodic phased array of dipoles in free space. For observation points not too far from the array plane, the algorithm uses a hybrid spectral-spatial representation of the Green's function accelerated with the Levin T method, that we show to be faster than the Shanks method. For observation points sufficiently far away from the array plane, we show that the SAGF is efficiently evaluated by using asymptotic field expressions. Asymptotics is also used to explain the loss of accuracy of the Levin T accelerator in certain regions, and a correction procedure is proposed to overcome this problem
doi_str_mv	10.1109/TAP.2006.869945
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source	IEEE Electronic Library (IEL) Journals
subjects	Acceleration Accelerators Algorithms Antenna radiation patterns Antennas Applied sciences Arrays Asymptotic properties Bandwidth Broadband antennas Dipole antennas Dipoles Exact sciences and technology Frequency Green's function Green's function methods Green's functions Impedance Loaded antennas numerical methods periodic structures Phased arrays Planes Radiocommunications Telecommunications Telecommunications and information theory
title	Accelerated computation of the free space Green's function of semi-infinite phased arrays of dipoles
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