Method of moments analysis of slotted waveguide antenna arrays

Download
index.pdf
2014
Altuntaş, Abdülkerim
Show full item record
190
views
78
downloads
Slotted waveguide antenna arrays are used extensively in many applications because of their high power handling capability, planarity, low loss and reduced profile. After the synthesis of such an array, the design should be verified by analyzing the array with an efficient simulation tool which is accurate, fast and flexible. Although FEM (Finite Element Method) based commercial softwares are very accurate and flexible, they are not sufficiently fast especially when it comes to optimization and fine tuning. The aim of this study is to develop a MoM based simulation software to analyze slotted waveguide antenna arrays. The developed code is aimed to be a building block for a versatile software capable of analyzing different structures, so the code is designed to be open for future manipulations and improvements. A single slot on a waveguide is analyzed by using the developed code and the self admittance of the slot is calculated for different slot offset and length values. The results are compared with the experimental results found in the literature and a fair agreement is observed.
Antennas (Electronics)., Antenna arrays., Wave guides., Slot antennas., Moments method (Statistics).
http://etd.lib.metu.edu.tr/upload/12617097/index.pdf
https://hdl.handle.net/11511/23496
Graduate School of Natural and Applied Sciences, Thesis

Suggestions

Design of a slotted waveguide array antenna and its feed system
Top, Can Barış; Hızal, Altunkan; Department of Electrical and Electronics Engineering (2006)
Slotted waveguide array (SWGA) antennas find application in systems which require planarity, low profile, high power handling capabilities such as radars. In this thesis, a planar, low sidelobe, phased array antenna, capable of electronically beam scanning in E-plane is designed, manufactured and measured. In the design, slot characterization is done with HFSS and by measurements, and mutual coupling between slots are calculated analytically. A MATLAB code is developed for the synthesis of the SWGA antenna....
Reconfigurable Reflectarrays: Design, Analysis and Fabrication
Aydın Çivi, Hatice Özlem (2015-05-17)
Reflectarray antennas combine the advantages of both reflector and phased array antennas. Therefore, they offer low-loss, low-cost solutions for the high gain, beam steering and beam shaping applications. First the current progress and future perspectives regarding the design and analysis of reflectarrays are discussed. Then, recent technological developments and techniques that are used to realize reconfigurability in reflectarrays are presented.
Design of series-fed printed slot antenna arrays excited by microstrip lines
İncebacak, Mustafa; Alatan, Lale; Department of Electrical and Electronics Engineering (2010)
Series-fed printed slot antenna arrays excited by microstrip lines are low profile, easy to manufacture, low cost structures that found use in applications that doesn’t require high power levels with having advantage of easy integration with microwave front-end circuitry. In this thesis, design and analysis of microstrip line fed slot antenna arrays are investigated. First an equivalent circuit model that ignores mutual coupling effects between slots is studied. A 6-element array is designed by using this e...
Development of beam scheduling algorithm for frequency diverse array /
Çetiner, Ramazan; Demir, Şimşek; Department of Electrical and Electronics Engineering (2015)
Electronic scanning is the most desirable feature of radar systems. With electronic scanning, it is possible to steer the main beam of an array antenna instantaneously into a desired direction where no mechanical mechanism is involved in the scanning process. Electronic scanning methods including phase scanning, time delay scanning, and frequency scanning have been used in various radar applications; however new and cheaper scanning methods are still being investigated. It is the purpose of this thesis to i...
An Investigation of beam scanning of arrays on cylindrical, conical and spherical surfaces
Takak, Yücel; Aydın Çivi, Hatice Özlem; Department of Electrical and Electronics Engineering (2015)
Recently, wide angle scanning antennas are often required especially in many radar applications. It is known that planar arrays have limited scan range without beam deformation. In this study design and production steps for wide angle scanning antenna arrays conformed on cylindrical, conical and spherical surfaces that operate at X-Band are investigated. Antenna elements used in these conformal arrays are designed using full wave electromagnetic solver tool HFSS. A MATLAB code for obtaining array patterns i...
Citation Formats
A. Altuntaş, “Method of moments analysis of slotted waveguide antenna arrays,” M.S. - Master of Science, Middle East Technical University, 2014.
METU IIS - Integrated Information Service open@metu.edu.tr