Use of computationally efficient MoM in the analysis and design of printed structures

Analysis of dual - polarized aperture - coupled microstrip antennas with H-shaped slots and equivalent circuit modeling of H shaped slots İşeri, Kadir; Alatan, Lale; Department of Electrical and Electronics Engineering (2012) This thesis includes the design, production and measurement of a wideband dualpolarized X-band aperture-coupled microstrip patch antenna. The wideband and dual-polarized operation is achieved through the use of H-shaped coupling slots. Therefore, the equivalent circuit modeling of a microstrip line fed H-shaped slot is also studied in this thesis. A step-by-step procedure is followed during the design process of the dual-polarized aperture-coupled microstrip antenna. First, an aperture-coupled microstrip an...
Analysis and design of active annular ring coupled circular patch antenna Gebeşoğlu, Durmuş; Koç, Seyit Sencer; Department of Electrical and Electronics Engineering (2017) This thesis includes the design, production and measurement of the active, dual band annular ring coupled circular patch antenna. The dual band operation is achieved by using stacked patches. 3 dB hybrid is used to obtain circular polarization. Effects of antenna parameters on the input impedance and frequency ratio between the resonance frequencies are observed. Design has been achieved step by step. Firstly, dual band operation is investigated by using stacked patches. An annular ring antenna and a circul...
Analysis of various microstrip printed geometries using closed-form green’s functions Ülkü, İrem; Dural Ünver, Mevlüde Gülbin; Alatan, Lale; Department of Electrical and Electronics Engineering (2013) In general, current distributions for different microstrip structures such as Single Microstrip Line (SML), Coupled Microstrip Line (CML) and Microstrip Patch Antenna (MPA) are obtained by using Method of Moments (MoM) in conjuction with closed-form spatial domain Green’s functions. Specifically, MPA is designed to obtain a Wideband Microstrip Patch Antenna (WMPA). The current distribution is acquired by the same analysis and bandwidth is obtained from the return loss graph for this WMPA. Standard MPA and W...
Analysis and design of reactively loaded dual band microstrip antenna Bayram, Caner; Koç, Seyit Sencer; Department of Electrical and Electronics Engineering (2015) This thesis includes the design, production and measurement of a reactively loaded microstrip patch antenna. The dual band and circular polarization operation are achieved through the use of narrow slots etched close to the radiating edges on a nearly square patch. During the design process, the effects of antenna parameters on the input impedance and axial ratio characteristics are investigated. A step-by-step procedure is followed during the design process. First, the dual band characteristic is investiga...
Analysis of koch fractal antennas İrgin, Ümit; Birand, Mehmet Tuncay; Department of Electrical and Electronics Engineering (2009) Fractal is a recursively-generated object describing a family of complex shapes that possess an inherent self-similarity in their geometrical structure. When used in antenna engineering, fractal geometries provide multi-band characteristics and lowering resonance frequencies by enhancing the space filling property. Moreover, utilizing fractal arrays, controlling side lobe-levels and radiation patterns can be realized. In this thesis, the performance of Koch curve as antenna is investigated. Since fractals a...

Citation Formats

L. H. Alatan, “Use of computationally efficient MoM in the analysis and design of printed structures,” Ph.D. - Doctoral Program, Middle East Technical University, 1997.