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Vocal types in crossbill populations (Loxia spp.) of Southwest Europe
(Universität Ulm, 2009)
Eine formale Semantik für die Verknüpfung von Verhaltensbeschreibungen in der UML 2
Software development should proceed continuously from requirements through specification to implementation, using an integrated formalism, method and tool set. A state-of-the-art proposal aiming at such an integrated ...
Management datengetriebener Prozessstrukturen
Unternehmen erreichen ihre Geschäftsziele zunehmend durch das systematische Management ihrer Geschäftsprozesse. Um komplexe Geschäftsziele zu realisieren, lassen sich diese Prozesse meist verknüpfen und so Prozessstrukturen ...
MBE growth and characterization of multilayer structures for vertically emitting laser devices
This work concerns molecular beam epitaxy (MBE) growth and characterization of multilayer structures for vertically emitting laser devices. In particular, this thesis is focused on the fabrication of novel VCSEL (vertical-cavity ...
Tailoring the magnetic anisotropy of thin films utilizing large persistent stress and pulsed laser irradiation
The magnetic anisotropy plays a major role towards the stability of information stored in the magnetic recording media and the properties of devices using the giant magnetoresistive effect. The objective of this thesis ...
Technology for diamond based electronics
The superior electrical and thermal properties of diamond predestine this material to become an important semiconductor. In this thesis, diamond field effect transistors and diodes were fabricated and evaluated. The progress ...
The impact of layout and technology on the DC and RF performance of AlGaN/GaN HFETs
An analysis of the impact of device layout and technology on the DC and RF performance of AlGaN/GaN HFETs is presented. For this analysis AlGaN/GaN HFETs fabricated on SiC substrate were extensively characterized by DC, ...
An unequal power divider using composite right/left-handed transmission line couplers
A novel microwave power divider based on composite right/left-handed transmission line (CRLH TL) is presented. The power divider is composed of a segment of CRLH TL and several microstrip lines coupled with it. This design ...
Broadband via-free microstrip balun using metamaterial transmission lines
A novel metamaterial broadband microstrip balun design is proposed. The broadband balun consists of a pair of identical metamaterial transmission lines. In the odd mode, a virtual ground is formed between the symmetric ...
A wide band transition from waveguide to differential microstrip lines
A novel transition from rectangular waveguide to differential microstrip lines is illustrated in this paper. It transfers the dominant TE10 mode signal in a rectangular waveguide to a differential mode signal in the coupled ...