Numerically efficient analysis and design of conformal printed structures in cylindrically layered media

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Tezin Türü: Doktora

Tezin Yürütüldüğü Kurum: Orta Doğu Teknik Üniversitesi, Mühendislik Fakültesi, Elektrik ve Elektronik Mühendisliği Bölümü, Türkiye

Tezin Onay Tarihi: 2007

Öğrenci: REMZİ CÜNEYT ACAR

Danışman: MEVLÜDE GÜLBİN DURAL ÜNVER

Özet:

The complete set of Green’s functions for cylindrically layered media is presented. The formulations reported in the previously published work by Tokgöz (M.S.Thesis, 1997) are recalculated, the missing components are added and a solution to the problem when (rho equals rhop) is proposed. A hybrid method to calculate mutual coupling of electric or magnetic current elements on a cylindrically layered structure using MoM is proposed. For the calculation of MoM matrix entries, when (rho equals rhop) and fi is not close to fip, the closed-form Green’s functions are employed. When fi is close to fip, since the spectral-domain Green’s functions do not converge, MoM matrix elements are calculated in the spectral domain. The technique is applied to both printed dipoles and slots placed on a layered cylindrical structure. The computational efficiency of the anaysis of mutual coupling of printed elements on a cylindrically layered structure is increased with the use of proposed hybrid method due to use of closed-form Green’s functions.