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Moment method analysis of circular cylindrical array of waveguide elements covered with a multilayer radome
KTH, School of Electrical Engineering (EES), Centres, Alfvén Laboratory Centre for Space and Fusion Plasma Physics.
2006 (English)In: IEE Proceedings - Microwaves Antennas and Propagation, ISSN 1350-2417, E-ISSN 1359-706X, Vol. 153, no 1, 29-37 p.Article in journal (Refereed) Published
Abstract [en]

An analysis of ail array of rectangular waveguide openings in a circular cylindrical groundplane covered with a radome is presented. The analysis method is based oil the modal solution, i.e. on the superposition of one-dimensional spectral solutions, and on the method of moments. The modal approach requires the summation of a large number of terms in the Fourier series For structures with large radii. Furthermore. highly oscillating integrals occur when the wavegulde openings are axially separated. Both problems are treated with special care: asymptotic formulas are used for calculating the Green's functions, and the integration contour for calculating the Inverse Fourier transformation is carefully selected. Measurements oil ail 18 x 3 waveguide array oil a circular cylindrical structure covered with a radome have been used for verification of the theoretical results. The effect of an airgap between the waveguide openings and the radome is discussed. The agreement between calculated and measured values of mutual coupling, input admittance and radiation patterns is very good.

Place, publisher, year, edition, pages
2006. Vol. 153, no 1, 29-37 p.
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Engineering and Technology
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URN: urn:nbn:se:kth:diva-37633DOI: 10.1049/ip-map:20045067ISI: 000235507500006Scopus ID: 2-s2.0-32544447721OAI: oai:DiVA.org:kth-37633DiVA: diva2:434529
Available from: 2011-08-15 Created: 2011-08-15 Last updated: 2017-12-08Bibliographically approved

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