Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/65533
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dc.contributor.authorZou, Qiongen
dc.date.accessioned2015-10-22T03:12:52Zen
dc.date.available2015-10-22T03:12:52Zen
dc.date.copyright2015en
dc.date.issued2015en
dc.identifier.citationZou, Q. (2015). Design of voltage-controlled oscillators and frequency dividers for 60 GHZ wireless communication applications. Doctoral thesis, Nanyang Technological University, Singapore.en
dc.identifier.urihttps://hdl.handle.net/10356/65533en
dc.description.abstractA frequency synthesizer which is used to provide the local oscillation (LO) frequency of a transceiver is a fundamental block in a wireless communication system. For 60 GHz applications, the voltage-controlled oscillator (VCO) and the first-stage frequency divider (FD) are the most challenging blocks of a synthesizer due to their high operation frequency and their significant influence on the overall performance of the synthesizer. As frequency increases, the trade-offs between phase noise, power consumption, and tuning range of VCO becomes more difficult. In this thesis, firstly, the Q enhancement of multiple-coupled LC-tank has been investigated, mainly for the purpose of designing VCOs with low phase noise under low power consumption for 60 GHz transceivers with a multi-conversion super-heterodyne architecture. Secondly, a Ku-band VCO using dual LC-tanks and transformer-based feedback technique is designed. Thirdly, to cater for the requirement of wide tuning range for 60 GHz applications, a new dual-mode VCO topology with switchable coupled VCO-cores has been proposed to design low phase noise and wide frequency tuning range 60 GHz VCOs. For the first-stage FD, the injection-locked frequency divider (ILFD) with high division ratio is an attractive solution for mm-wave frequency synthesizers, but normally ILFDs suffer from narrow locking ranges, making them difficult to design for 60 GHz applications. In the thesis, a V-band divide-by-4 ILFD has been proposed. With the special topology involving dual oscillation loops, a wide locking range has been achieved at 60 GHz.en
dc.format.extent154 p.en
dc.language.isoenen
dc.subjectDRNTU::Engineering::Electrical and electronic engineering::Electronic circuitsen
dc.titleDesign of voltage-controlled oscillators and frequency dividers for 60 GHZ wireless communication applicationsen
dc.typeThesisen
dc.contributor.supervisorYeo Kiat Sengen
dc.contributor.schoolSchool of Electrical and Electronic Engineeringen
dc.description.degreeDOCTOR OF PHILOSOPHY (EEE)en
dc.identifier.doi10.32657/10356/65533en
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