Synthesis of Dual-Beam Patterns by Exploiting Time-Modulation in Unequally Spaced Linear Arrays

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dc.contributor.authorPatra, Somnath
dc.contributor.authorMandal, Sujit Kumar
dc.contributor.authorMahanti, Gautam Kumar
dc.contributor.authorPathak, Narendra Nath
dc.coverage.issue4cs
dc.coverage.volume30cs
dc.date.accessioned2021-12-13T09:46:54Z
dc.date.available2021-12-13T09:46:54Z
dc.date.issued2021-12cs
dc.description.abstractIn this paper, a novel approach for synthesizing multiple radiation patterns with reduced hardware complexity in the feed network by exploiting the additional degree of freedom ‘time’ in time modulated unequally spaced linear array (TMUSLA) is presented. In the proposed approach, with a suitable common set of element position of TMUSLA, the desired dual-beam pattern with low sidelobe level (SLL) is obtained by simply controlling the ON-OFF time sequence of the RF switches connected to the array elements. To show the effectiveness of the proposed array synthesis method, two dual beam patterns - first one as pencil (sum) beam (PB) and flat-topped beam (FTB) pattern, and the second one as sum and difference pattern with different constraints have been synthesized. For the successful generation of the desired power patterns, differential evolution (DE) algorithm is employed to obtain the optimum possible solution in terms of common element position, time-modulation, switching sequences and applicable excitation phase for the desired shape beam patterns. The superiority of the proposed approach with the favourable improved performance have been demonstrated by comparing the realized patterns with the state-of-the-art relevant reported works.en
dc.formattextcs
dc.format.extent646-653cs
dc.format.mimetypeapplication/pdfen
dc.identifier.citationRadioengineering. 2021 vol. 30, č. 4, s. 646-653. ISSN 1210-2512cs
dc.identifier.doi10.13164/re.2021.0646en
dc.identifier.issn1210-2512
dc.identifier.urihttp://hdl.handle.net/11012/203188
dc.language.isoencs
dc.publisherSpolečnost pro radioelektronické inženýrstvícs
dc.relation.ispartofRadioengineeringcs
dc.relation.urihttps://www.radioeng.cz/fulltexts/2021/21_04_0646_0653.pdfcs
dc.rightsCreative Commons Attribution 4.0 International licenseen
dc.rights.accessopenAccessen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectPattern synthesisen
dc.subjecton-time durationen
dc.subjectside lobe levelen
dc.subjectsideband levelen
dc.subjectdifferential evolutionen
dc.titleSynthesis of Dual-Beam Patterns by Exploiting Time-Modulation in Unequally Spaced Linear Arraysen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
eprints.affiliatedInstitution.facultyFakulta eletrotechniky a komunikačních technologiícs
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