Optimal Excitation Matching Strategy for Sub-Arrayed Phased Linear Arrays Generating Arbitrary-Shaped Beams

The design of phased arrays able to generate arbitrary-shaped beams through a sub-arrayed architecture is addressed here. The synthesis problem is cast in the excitation matching framework, so as to yield clustered phased arrays providing optimal trade-offs between the complexity of the array archit...

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Vydáno v:	IEEE transactions on antennas and propagation Ročník 68; číslo 6; s. 4638 - 4647
Hlavní autoři:	Rocca, Paolo, Poli, Lorenzo, Polo, Alessandro, Massa, Andrea
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	New York IEEE 01.06.2020 The Institute of Electrical and Electronics Engineers, Inc. (IEEE) Institute of Electrical and Electronics Engineers
Témata:	<italic xmlns:ali="http://www.niso.org/schemas/ali/1.0/" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">k -means algorithm Algorithms Arbitrary shaped beams Architecture Arrays Clustering algorithms Complexity Complexity theory Excitation excitation matching Linear antenna arrays linear array Linear arrays Lobes Mathematics Notches Optimization Pattern matching Pencil beams Phase matching phased array Phased arrays Sidelobes sub-arraying Synthesis
ISSN:	0018-926X, 1558-2221
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Abstract	The design of phased arrays able to generate arbitrary-shaped beams through a sub-arrayed architecture is addressed here. The synthesis problem is cast in the excitation matching framework, so as to yield clustered phased arrays providing optimal trade-offs between the complexity of the array architecture (i.e., the minimum number of control points at the sub-array level) and the matching of a reference pattern. A synthesis tool based on the <inline-formula> <tex-math notation="LaTeX">k </tex-math></inline-formula>-means algorithm is proposed for jointly optimizing the sub-array configuration and the complex sub-array coefficients. Selected numerical results, including pencil beams with sidelobe notches and asymmetric lobes as well as shaped main lobes, are reported and discussed to highlight the peculiarities of the proposed approach also in comparison with some extensions to complex excitations of state-of-the-art sub-array design methods.
AbstractList	The design of phased arrays able to generate arbitrary-shaped beams through a sub-arrayed architecture is addressed here. The synthesis problem is cast in the excitation matching framework, so as to yield clustered phased arrays providing optimal trade-offs between the complexity of the array architecture (i.e., the minimum number of control points at the sub-array level) and the matching of a reference pattern. A synthesis tool based on the [Formula Omitted]-means algorithm is proposed for jointly optimizing the sub-array configuration and the complex sub-array coefficients. Selected numerical results, including pencil beams with sidelobe notches and asymmetric lobes as well as shaped main lobes, are reported and discussed to highlight the peculiarities of the proposed approach also in comparison with some extensions to complex excitations of state-of-the-art sub-array design methods. The design of phased arrays able to generate arbitrary-shaped beams through a sub-arrayed architecture is addressed here. The synthesis problem is cast in the excitation matching framework, so as to yield clustered phased arrays providing optimal trade-offs between the complexity of the array architecture (i.e., the minimum number of control points at the sub-array level) and the matching of a reference pattern. A synthesis tool based on the <inline-formula> <tex-math notation="LaTeX">k </tex-math></inline-formula>-means algorithm is proposed for jointly optimizing the sub-array configuration and the complex sub-array coefficients. Selected numerical results, including pencil beams with sidelobe notches and asymmetric lobes as well as shaped main lobes, are reported and discussed to highlight the peculiarities of the proposed approach also in comparison with some extensions to complex excitations of state-of-the-art sub-array design methods.
Author	Poli, Lorenzo Rocca, Paolo Massa, Andrea Polo, Alessandro
Author_xml	– sequence: 1 givenname: Paolo orcidid: 0000-0003-4522-6903 surname: Rocca fullname: Rocca, Paolo email: paolo.rocca@unitn.it organization: ELEDIA@UniTN (DISI-University of Trento), Trento, Italy – sequence: 2 givenname: Lorenzo orcidid: 0000-0002-8816-1970 surname: Poli fullname: Poli, Lorenzo email: lorenzo.poli@unitn.it organization: ELEDIA@UniTN (DISI-University of Trento), Trento, Italy – sequence: 3 givenname: Alessandro orcidid: 0000-0002-8190-2377 surname: Polo fullname: Polo, Alessandro email: alessandro.polo.1@unitn.it organization: ELEDIA@UniTN (DISI-University of Trento), Trento, Italy – sequence: 4 givenname: Andrea orcidid: 0000-0002-8429-8937 surname: Massa fullname: Massa, Andrea email: andrea.massa@unitn.it organization: ELEDIA@UniTN (DISI-University of Trento), Trento, Italy
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Cites_doi	10.1109/TAP.1985.1143682 10.1109/JPROC.2015.2512389 10.1049/ip-h-2.1988.0061 10.1109/TAP.2007.893406 10.1109/TAP.2004.838788 10.1109/TAP.2009.2024489 10.1109/TAP.2018.2864628 10.1109/TAP.1984.1143262 10.1109/TAP.2008.924713 10.1109/TAP.2007.913037 10.1049/ip-h-2.1988.0084 10.1007/978-3-319-69404-7 10.1049/iet-map.2016.0517 10.1109/TAP.2009.2013423 10.1109/TAP.2018.2879778 10.2307/2281952 10.1109/TAP.2010.2096383 10.1109/TAP.2017.2738065 10.1109/TSP.2003.810308 10.1109/TAP.2008.2009776 10.1109/TMTT.2014.2354134 10.1109/MAP.2015.2397154 10.1109/8.901272 10.1109/JPROC.2015.2494879 10.1109/TAP.2017.2735549 10.1109/TAP.2018.2816782 10.1109/TAP.2007.893374 10.1163/156939396X00919 10.2528/PIER10060912 10.1109/8.964098
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Title	Optimal Excitation Matching Strategy for Sub-Arrayed Phased Linear Arrays Generating Arbitrary-Shaped Beams
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