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AuthorGruson, Frankdc.contributor.author
Date of accession2016-03-15T11:04:21Zdc.date.accessioned
Available in OPARU since2016-03-15T11:04:21Zdc.date.available
Year of creation2010dc.date.created
AbstractThis thesis targets receive front-ends with high linearity for applications such as UMTS, CDMA, GPS, TETRA, and WLAN. It reviews available circuit architectures and linearization techniques and chooses the methods best suited for each problem. All circuits have been designed using production line Silicon-Germanium bipolar and BiCMOS processes. Theoretical considerations, extensive simulations and measurements showed that SiGe HBT technology - despite its exponential current-versus-voltage characteristics - offers higher linearity than pHEMT at low current consumption. For a given supply current, the most linear SiGe HBT LNA uses a single-stage cascode design with narrow band reactive load and inductive series feedback. In order to achieve a high 3rd order intercept point (IP3) in the two-tone test, the difference frequency (often called ’beat frequency’) needs to be shorted properly. Different low-frequency termination techniques like broadband source termination, LC trap networks, inductive bias networks and active bias networks based on operational amplifiers have been evaluated and the optimum solution was chosen, depending on the application. For very narrowband applications, cancellation of intermodulation products by using capacitive parallel feedback can be exploited, leading to high IP3. All realised LNAs have been benchmarked with published results and are close to the theoretical optimum in linearity. Both passive mixers and active Gilbert cell mixers have been optimised with respect to linearity. For systems where the interferers appear out-of-band of the SAW filter between LNA and mixer, an optimised Gilbert cell mixer is generally the best compromise in system noise figure, linearity and power consumption. For systems with strong in-band jammer (e.g. professional mobile radio terminals), a NMOS ring mixer with high peak-to-peak LO drive shows high input-referred linearity and allows for high LNA gain resulting in a very low system noise figure.dc.description.abstract
Languageendc.language.iso
PublisherUniversität Ulmdc.publisher
LicenseStandard (Fassung vom 01.10.2008)dc.rights
Link to license texthttps://oparu.uni-ulm.de/xmlui/license_v2dc.rights.uri
KeywordHBTdc.subject
KeywordLNAdc.subject
KeywordMixerdc.subject
KeywordModel extractiondc.subject
KeywordOn-wafer calibrationdc.subject
KeywordOn-wafer measurementdc.subject
KeywordSiGedc.subject
Dewey Decimal GroupDDC 620 / Engineering & allied operationsdc.subject.ddc
LCSHReceiversdc.subject.lcsh
TitleHigh-linearity receivers for mobile communication applications using SiGe technologydc.title
Resource typeDissertationdc.type
DOIhttp://dx.doi.org/10.18725/OPARU-3897dc.identifier.doi
PPN630900981dc.identifier.ppn
URNhttp://nbn-resolving.de/urn:nbn:de:bsz:289-vts-73137dc.identifier.urn
GNDCDMAdc.subject.gnd
GNDGPSdc.subject.gnd
GNDHeterobipolartransistordc.subject.gnd
GNDInduktordc.subject.gnd
GNDIntermodulationdc.subject.gnd
GNDLinearitätdc.subject.gnd
GNDTETRA <Telekommunikation>dc.subject.gnd
GNDUMTSdc.subject.gnd
FacultyFakultät für Ingenieurwissenschaften und Informatikuulm.affiliationGeneral
Date of activation2010-06-30T11:08:50Zuulm.freischaltungVTS
Peer reviewneinuulm.peerReview
Shelfmark print versionZ: J-H 13.689; W: W-H 12.189uulm.shelfmark
DCMI TypeTextuulm.typeDCMI
VTS-ID7313uulm.vtsID
CategoryPublikationenuulm.category
University Bibliographyjauulm.unibibliographie


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