Thesis (MScEng)--Stellenbosch University, 2003. / ENGLISH ABSTRACT: Equal division microwave power dividers are investigated in this study. A wideband
Wilkinson power divider and a wideband directional coupler with a centre frequency of
10 GHz were built. The design of the directional coupler is scaled, such that it can be used
between 18 and 40 GHz. The details of the electromagnetic analyses of these structures
are discussed and physical implementation issues are investigated.
In a complementary study to the design of planar microwave dividers, the FDTD computational
method was implemented and used to analyse the Wilkinson divider and the 18
to 40 GHz directional coupler.
Results are compared to those obtained from commercial numerical method packages and
in the case of the Wilkinson divider, to measured results.
Suggestions are made for improvements in the implementation of the directional coupler
and methods for a more efficient FDTD implementation are discussed. / AFRIKAANSE OPSOMMING: Mikrogolf drywings verdelers wat gelyk verdeel, word in hierdie studie ondersoek. ’n
Wyeband Wilkinson verdeler en wyeband gerigte koppelaar met ’n senter frekwensie van
10 GHz is gebou. Die onwerp van die gerigte koppelaar is ook geskaleer sodat die ontwerp
gebruik kan word tussen 18 en 40 GHz. Die details van die elektromagnetiese analise van
hierdie strukture word bespreek en kwessies rondom die implementering van die strukture
word ondersoek.
In ’n komplementere studie, is die Eindige Verskil Tyd Gebied numeriese metode (Engels:
FDTD) geimplimenteer en gebruik om die Wilkinson en die 18 tot 40 GHz gerigte
koppelaar te analiseer.
Resultate word vergelyk met resultate verkry met numeriesie metodes geimplimenteer
in kommersiele pakkette, en in die geval van die Wilkinson verdeler, ook met gemete
resultate.
Aanbevelings word verder gemaak vir verbeterings in die implementering van die gerigte
koppelaar asook metodes om ’n meer effektiewe FDTD kode te implementeer.
| Identifer | oai:union.ndltd.org:netd.ac.za/oai:union.ndltd.org:sun/oai:scholar.sun.ac.za:10019.1/53353 |
| Date | 12 1900 |
| Creators | Strydom, M. L. |
| Contributors | Meyer, P., Davidson, D. B., Stellenbosch University. Faculty of Engineering. Dept. of Electrical and Electronic Engineering. |
| Publisher | Stellenbosch : Stellenbosch University |
| Source Sets | South African National ETD Portal |
| Language | en_ZA |
| Detected Language | Unknown |
| Type | Thesis |
| Format | 144 p. : ill. |
| Rights | Stellenbosch University |
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