Thesis (MScEng (Electrical and Electronic Engineering))--University of Stellenbosch, 2010. / ENGLISH ABSTRACT: An investigation into the cause of undesired sidelobes in the 3D radiation
pattern of slotted waveguide arrays is conducted. It is hypothesized that
the cross-polarization of the antenna is at fault, along with the possibility
that an error is made when designing a linear array. In investigating and
finding a solution to the problem, the “Z-slot ” is introduced in conjunction
with polarizer plates. The base components are used by a custom optimization
algorithm to design reference and solution antennas. Results of the
antennas are then compared to ascertain the cause and possible solutions
for the unwanted sidelobes. The generic nature of the process may be used
to characterize other arbitrary aperture configurations and to design larger
antennas. / AFRIKAANSE OPSOMMING: ‘n Ondersoek om die oorsaak van ongewensde sylobbe in die 3D uitstraalpatroon
van golfleier-antennas vas te stel. Die hipotese is dat die probleem
ontstaan uit die kruis-polarisasie van die antenna, tesame met ‘n verkeerdelikke
aanname dat die opstelling liniêr is. Die “Z-Gleuf” tesame met polariseringsplate
word voorgestel as hulpmiddel om die moontlikke oorsake
te ondersoek. ‘n Gespesialiseerde optime erings-algoritme benut hierdie basiskomponente
om beide verwysings- en oplossing-antennas te ontwerp.
Resultate van die ontwerpde antennas word dan vergelyk om die oorsaak
van die ongewensde sylobbe te vas te stel. Die generiese aard van die proses
kan toegepas word op enige gleuf-konfigurasie en om groter antennas mee
te ontwerp.
| Identifer | oai:union.ndltd.org:netd.ac.za/oai:union.ndltd.org:sun/oai:scholar.sun.ac.za:10019.1/4161 |
| Date | 03 1900 |
| Creators | Maritz, Andries Johannes Nicolaas |
| Contributors | Palmer, K. D., University of Stellenbosch. Faculty of Engineering. Dept. of Electrical and Electronic Engineering. |
| Publisher | Stellenbosch : University of Stellenbosch |
| Source Sets | South African National ETD Portal |
| Language | English |
| Detected Language | English |
| Type | Thesis |
| Format | 106 p. : ill. |
| Rights | University of Stellenbosch |
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