Diyelektrik tabakalar kaplı mükemmel elektriksel iletken silindir üzerindeki menfezlerin, kapalı-form green fonksiyonlarıyla araştırması ve geliştirmesi

Closed-form Green?s function representations for magnetic sources, which isin general used to represent aperture type antennas on conducting surfaces, aredeveloped for a cylindrically stratified media. The resultant expressions are validfor almost all possible placements of source and observation points including thecases where ro = ro' and phi=phi'. Hence, they can be used in a method of Momentssolution procedure.In the course of obtaining these expressions, the conventional spectral domainGreen?s function representations for magnetic sources are reorganized in order tohandle relatively large cylinders and the axial line problem. Available accelerationtechniques that exist in the literature are implemented to perform the summationover the cylindrical eigenmodes efficiently and to handle some numerical problemsalong the kz integration path. Then, the resulting expressions are transformedto the spatial domain using the discrete complex image method with the help ofthe generalized pencil of function method, where a two-level approach is used.It should be noted that a similar methodology has recently been developed forelectrical sources and very accurate results have been presented. In this work, itsmagnetic source counterpart has been developed.Numerical results are presented in two different forms:(a) ro ? ro' , the magnetic source is on the conducting cylinder, which forms theinnermost layer of the dielectric coated cylinder. This is a typical scenariofor the radiation problem of aperture type antennas.(b) ro = ro', both the magnetic source and the observations points are on theconducting cylinder which forms the innermost layer. There is a single dielectric layer on the top of them. This is a typical scenario for the mutualcoupling between aperture type antennas.