With the introduction of new cellular phone standards with increased modulation complexity and signal bandwidth, the design of efficient transmitters will be a major challenge. With this in mind a number of switched mode transmitter architectures are described, both polar and Cartesian ones. The most promising candidates use a combination of supply voltage modulation and other techniques, such as

Popular Abstract in Swedish Radiella gliaceller kan inte bara skapa nervceller utan även inverka gynnsamt på deras mognad. En ny avhandling vid Lunds universitet visar att gliaceller bidrar mer aktivt till nervcellernas utveckling än man tidigare trott. Enbart en transportled för omogna nervceller. Det har länge varit de radiella gliacellernas lott. Men det är inte hela sanningen enligt CharlottaThe current thesis is aimed to increase our understanding of the generation and differentiation of telencephalic neurons, with emphasis on the role of glial cells in these processes. Using in vitro methods we have studied the role of glial cells in neurogenesis, inheritance of genetic regional specification, and influence on differentiation of neurons. We demonstrate that expanded cell cultures ex

Arguing against the presumption that subcultural meaning constitutes a single set of meaning, Hannerz addresses how punks draw upon plural definitions of the mainstream and notions of subcultural authenticity. Drawing from an exceptionally rich fieldwork in Sweden and Indonesia, Hannerz demonstrates that how, where, and against what, punk style and identification are structured and lived comes dow

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We study the competition between interference due to multiple single-particle paths and Coulomb interaction in a simple model of an Anderson-type impurity with local-magnetic-field-induced level splitting coupled to ferromagnetic leads. The model along with its potential experimental relevance in the field of spintronics serves as a nontrivial benchmark system where various quantum-transport appro

Abstract is not available

Abstract is not available

Under det senaste decenniet har mångfaldsbegreppet gjort sitt inträde i den svenska samhällsdebatten. Begreppet kan definieras på en rad olika sätt: i denna avhandling står den etniska aspekten i fokus. Mångfaldsidén är nära förknippad med en rad olika samhällstrender av betydelse såsom demografisk förändring, ekonomisk strukturomvandling, organisationsförändring och debatten om diskriminering och

On the production of short films within the contemporary Swedish film production setup. Moreover, the reliance on film festivals for screenings and that shorts are part of a particularly "European art cinema institution" is discussed

This paper presents a receiver architecture for intraband dual-carrier reception as specified for the upcoming releases of 3GPP WCDMA and LTE standards. It is based on a time-discrete harmonic rejection complex-IF mixer to limit the bandwidth requirements on the ADCs to that of a single carrier. The mixer has been designed and fabricated together with a 3rd order continuous-time (CT) delta-sigma A