Dynamic power supply design for varying envelope signals using envelope tracking method

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buir.advisorAtalar, Abdullah
dc.contributor.authorÖzel, Muhlis Kenan
dc.date.accessioned2016-01-08T18:19:44Z
dc.date.available2016-01-08T18:19:44Z
dc.date.issued2012
dc.descriptionAnkara : The Department of Electrical and Electronics Engineering and the Graduate School of Engineering and Science of Bilkent University, 2012.en_US
dc.descriptionThesis (Master's) -- Bilkent University, 2012.en_US
dc.descriptionIncludes bibliographical references.en_US
dc.description.abstractIn modern communication systems, demand for higher data-rate is consistently growing. Higher data-rate within a limited bandwidth tends to require more amplitude modulation (AM) to increase number of symbols per second. Amplitude modulated carriers should be amplified using linear power amplifiers (PAs). Although, linear PAs have good performance in terms of linearity, they are efficient only when they transmit at maximum power. However, modern communication signals have high peak-to-average-power ratio (PAPR), therefore probability of a PA transmitting at maximum power is low. As a conclusion, efficiencies are degraded to alarmingly low values and the problem translates to heat and shorter battery life issues. In this thesis, we investigate how dynamic power supplies (DPS) perform for non-constant envelope RF signals. We have designed a DPS and used it to test efficiency enhancement of two PAs compared to the same PAs operating with constant supply. Our aim was to obtain efficiency increase compared to constant supply case without introducing extra non-linearity. We have obtained satisfying results for both amplifiers.en_US
dc.description.provenanceMade available in DSpace on 2016-01-08T18:19:44Z (GMT). No. of bitstreams: 1 0006251.pdf: 1294627 bytes, checksum: 2bc5b568ac2158277a8c17ede87693a0 (MD5)en
dc.description.statementofresponsibilityÖzel, Muhlis Kenanen_US
dc.format.extentx, 56 leaves, graphicsen_US
dc.identifier.urihttp://hdl.handle.net/11693/15517
dc.language.isoEnglishen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectAmplitude Modulation (AM)en_US
dc.subjectPower Amplifier (PA)en_US
dc.subjectPeak-toAverage-Power Ratio (PAPR)en_US
dc.subjectLinearityen_US
dc.subjectEfficiencyen_US
dc.subjectDynamic Power Supply (DPS)en_US
dc.subject.lccTK7871.58.P6 O94 2012en_US
dc.subject.lcshPower amplifiers--Design and construction.en_US
dc.subject.lcshSignal processing--Digital techiques.en_US
dc.titleDynamic power supply design for varying envelope signals using envelope tracking methoden_US
dc.typeThesisen_US
thesis.degree.disciplineElectrical and Electronic Engineering
thesis.degree.grantorBilkent University
thesis.degree.levelMaster's
thesis.degree.nameMS (Master of Science)

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