Now showing items 1-6 of 6
Millimeter-wave MEMS-loaded transmission-line phase shifters
(Universität Ulm, 2016-08-02)
Beam forming and scanning at microwave and millimetre-wave frequencies (1 GHz – 100 GHz) using electronic steerable array (ESA) antennas, requires phase shift and time-delay units. RF path phase shifters provide an attractive ...
Synthesis, characterization, and sensing applications of silicon nanowires and nanotubes
(Universität Ulm, 2017-08-11)
This thesis pursues the objective to advance and enhance existing achievements made in the field of nanowire-based sensing by studying new approaches for sensor design aiming both at a facilitation of device assembly and ...
Investigations towards 2D and 3D cell culture devices based on nanocrystalline diamond layers
(Universität Ulm, 2016-06-08)
This thesis aims to study advanced biological applications of nanocrystalline diamond layers with a special focus on the interfacial situation between biomaterials and biological systems. Specifically, nanoscopic interfacial ...
Impulse-radio ultra-wideband transmitter for communication and localization
(Universität Ulm, 2017-03-10)
Ultra-wideband radio is unique communication technology which combines high data rate communication and precise indoor localization capabilities in one system. These benefits are achieved thanks to wide signal bandwidths ...
PLL based fully-integrated LO generation for wideband RF front-ends
(Universität Ulm, 2018-05-16)
This dissertation describes Phase Locked Loop (PLL) based Local Oscillator (LO) designs for RF front-end modules targeting wideband wireless communications systems from microwave to millimeter-wave ranges. With the increase ...
SiGe BiCMOS circuits and system demonstrators for high range resolution mm-wave radars
(Universität Ulm, 2019-04-11)
The potential and performance of the silicon-based millimeter wave radar building blocks and systems have been demonstrated in many ways, including a wideband chirp generator, several high-performance frequency multiplier ...