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dc.contributor.authorKlionovski, Kirill
dc.date.accessioned2020-08-20T07:54:55Z
dc.date.available2020-08-20T07:54:55Z
dc.date.issued2020
dc.identifier.citationKlionovski, K. (2020). Scattering of Toroidal Waves by Semitransparent Reflectors of Revolution in Application to Omnidirectional Antennas. IEEE Transactions on Antennas and Propagation, 1–1. doi:10.1109/tap.2020.3016474
dc.identifier.issn1558-2221
dc.identifier.doi10.1109/TAP.2020.3016474
dc.identifier.urihttp://hdl.handle.net/10754/664700
dc.description.abstractProblems of radiation pattern synthesis, sidelobe suppression, or back radiation suppression appear when using antennas with reflectors or ground planes. The use of a semitransparent surface allows the required shape of a radiation pattern to be synthesized efficiently through the variation of reflection and transmission coefficients. Effective radiation pattern synthesis is possible when using analytical formulae designed for the radiation patterns of antennas with semitransparent reflectors. In this paper, we present a model for the scattering of a toroidal wave of a general form by means of a semitransparent reflector of revolution. The model allowed us to simulate the radiation patterns of various kinds of axisymmetric antennas with semitransparent reflectors and ground planes. Two asymptotic expansions of the radiation pattern of the model were found in the physical optics approximation. The expansions allow the radiation pattern for the entire space to be determined. As an example of its application, we used the model to calculate the radiation patterns of a plane with Archimedean two-wire spiral antenna and a loop antenna above concave and convex reflectors, as well as an Archimedean slot spiral antenna with a ground plane. We synthesized the optimal profiles of perfectly conducting and semitransparent reflectors and ground planes to improve the front-to-back ratio of the antennas.
dc.description.sponsorshipThe author expresses his deep gratitude to the author of the EDEM software package, Dr. Alexander Davydov, for the free ultimate version of the software.
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)
dc.relation.urlhttps://ieeexplore.ieee.org/document/9171565/
dc.relation.urlhttps://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=9171565
dc.rightsArchived with thanks to IEEE Transactions on Antennas and Propagation
dc.subjectToroidal wave
dc.subjectsemitransparent reflector
dc.subjectphysical optics approximation
dc.subjectArchimedean spiral antenna
dc.subjectloop antenna
dc.titleScattering of Toroidal Waves by Semitransparent Reflectors of Revolution in Application to Omnidirectional Antennas
dc.typeArticle
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
dc.identifier.journalIEEE Transactions on Antennas and Propagation
dc.eprint.versionPost-print
kaust.personKlionovski, Kirill
refterms.dateFOA2020-08-20T11:59:29Z


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