Finite element modeling of scattering from objects in rectangular waveguides

---

Tezin Türü: Yüksek Lisans

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

Tezin Onay Tarihi: 2017

Öğrenci: HÜSEYİN GÜLBAŞ

Danışman: MUSTAFA KUZUOĞLU

Özet:

Numerical analysis of scattering parameters of split ring resonators which are one of the microwave circuit elements is performed by the Finite Element Method in this thesis. The fundamentals of the model and analysis method will be discussed firstly. Afterwards, the basics of Finite Element Method including weak variational form of the wave equation, 3D formulations and application to scattering parameters will be presented. The concepts of Perfectly Matched Layer and resonators will be examined in detail. The accuracy of the method will be tested and the effects of different design parameters on the scattering parameters of split ring resonators will be investigated. These design parameters will be slit width, side width, and operation frequency. Moreover, reflection and transmission from the dielectric surfaces will be discussed. Additionally, each result will be compared with the ones achieved by using CST (Computer Simulation Technology) simulation software.