Synthesizer modulation for wideband FM generation

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dc.contributor.advisorDe Swardt, J. B.
dc.contributor.authorSnyman, A. (Anton)
dc.contributor.otherStellenbosch University. Faculty of Engineering. Dept. of Electrical and Electronic Engineering.en_ZA
dc.date.accessioned2012-08-27T11:33:04Z
dc.date.available2012-08-27T11:33:04Z
dc.date.issued2002-12
dc.descriptionThesis (MScEng)--University of Stellenbosch, 2002.en_ZA
dc.description.abstractENGLISH ABSTRACT: The high performance of present digital phase-locked loops makes it the preferred choice for the generation of stable, low noise, tunable local oscillators in wireless communications applications. Most transmitters use superheterodyn techniques for up-conversion of the modulated signal to the required transmission frequency. Another technique is to inject the modulation signal into a phase-locked loop and consequently generate a frequency modulated signal directly at the transmission frequency. The aim of this study is to obtain a synthesizer configuration for the effective generation of wideband FM, considering both passive and active loop filters. The selection is based on synthesizer output signal quality, settling time and loop response to the modulation signal.en_ZA
dc.description.abstractAFRIKAANSE OPSOMMING: Die hoe werksverrigting van fase-sluit lusse maak dit die verkiesde keuse vir die generasie van stabiele, lae ruis, verstelbare ossillators vir draadlose kommunikasie toepassings. Meeste senders gebruik "superheterodyn" tegnieke vir die op-menging van die gemoduleerde sein na die verlangde uitsaai frekwensie. 'n Ander tegniek is om die modulasie sein in 'n fase-sluit Ius te voer en so doende 'n gemoduleerde sein direk by die transmissie frekwensie te genereer. Die doel van hierdie studie is om 'n sintetiseerder konfigurasie te verkry vir die effektiewe opwekking van 'n wyeband FM sein, deur beide passiewe en aktiewe Ius filters in konsiderasie te neem. Die seleksie geskiet gebaseer op sintetiseerder uittree sein kwaliteit, sluit tyd en Ius gedrag as gevolg van die modulasie sein.af_ZA
dc.format.extent143 leaves : ill.
dc.identifier.urihttp://hdl.handle.net/10019.1/49736
dc.language.isoen_ZAen_ZA
dc.publisherStellenbosch : Stellenbosch Universityen_ZA
dc.rights.holderStellenbosch Universityen_ZA
dc.subjectFM broadcastingen_ZA
dc.subjectRadio -- Transmitters and transmissionen_ZA
dc.subjectWireless communication systemsen_ZA
dc.subjectDissertations -- Electrical and electronic engineeringen_ZA
dc.subjectTheses -- Electrical and electronic engineeringen_ZA
dc.titleSynthesizer modulation for wideband FM generationen_ZA
dc.typeThesisen_ZA
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