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In this paper two modified structures of multi- layered broadband 3 dB/'90deg coupled line couplers are proposed. The first structure is a broadside coupled stripline coupler with corrugated ground plane. The second investigated structure is a modified micro strip-slotline coupler. In comparison to basic configurations of couplers the improvement of operation bandwidth for proposed structures is achieved...
This letter presents the scattering and tunneling properties of multilayered periodic arrangement composed of frequency selective surfaces (FSS). Each surface is composed of a linear array of cylindrical metallodielectric posts. This arrangement constitutes a two-dimensional (2-D) electromagnetic band gap (EBG) structure. The electromagnetic curtain effect, realized by a rotation of the scatterers...
This paper presents the analysis of electromagnetic wave scattering by multilayered periodic structure composed of cylindrical posts which constitutes a two-dimensional (2-D) electromagnetic band gap (EBG) structure. The presented procedure combines several efficient numerical techniques, such as the iterative scattering procedure (ISP), the orthogonal expansion method, the T-matrix approach and the...
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