In this thesis, an analysis technique for the slot coupled patch antennas using MoM in
conjunction with the closed form Green&rsquo / s functions is presented. Slot coupled patch
antennas are fed by a microstrip open stub which is coupled to the patch through an
electrically small slot. Current distributions over the microstrip line, slot line and the
patch are represented by rooftop basis functions. First, a relatively simple structure,
microstrip coupled slot line is investigated using the proposed technique. Then the
method is extended to the slot coupled patch antenna geometry. By using the method,
current distributions on the feedline and the patch are calculated for a generic slot
coupled patch antenna. Then by using the distributions, return scattering parameters
of the antenna is approximated with complex exponentials using Prony&rsquo / s method. A
parametric study is carried out to observe the effect of each antenna component on
the antenna performance. Current distributions and return loss calculations are
repeated for modified antennas to observe and demonstrate the performance
differences. All simulations are verified using HFSS® / software and the results
available in the literature.
| Identifer | oai:union.ndltd.org:METU/oai:etd.lib.metu.edu.tr:http://etd.lib.metu.edu.tr/upload/12610996/index.pdf |
| Date | 01 August 2009 |
| Creators | Goksu, Mesut |
| Contributors | Dural, Gulbin |
| Publisher | METU |
| Source Sets | Middle East Technical Univ. |
| Language | English |
| Detected Language | English |
| Type | M.S. Thesis |
| Format | text/pdf |
| Rights | To liberate the content for public access |
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