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Portable shifted excitation Raman difference spectroscopy for on-site soil analysis
/forschung/publikationen/portable-shifted-excitation-raman-difference-spectroscopy-for-on-site-soil-analysis
On-site soil analysis in the framework of precision agriculture is gaining significant importance to achieve improved crop productivity, increased soil health and reduced fertilizer application. In…
Modeling of Hot-Via Technology for System-in-Package at Millimeter-wave Frequencies
/forschung/publikationen/modeling-of-hot-via-technology-for-system-in-package-at-millimeter-wave-frequencies
Hot via technology plays an important role for system integration at millimeter-wave frequencies. Accurate prediction of the parasitics is necessary to ensure proper impedance matching for system…
Electrical properties and microstructure of V/Al/Ni/Au contacts on n-Al0.65Ga0.35N:Si with different Au thicknesses and annealing temperature
/forschung/publikationen/electrical-properties-and-microstructure-of-valniau-contacts-on-n-al065ga035nsi-with-different-au-thicknesses-and-annealing-temperature
We investigated the formation of ohmic contacts as a result of intermetallic phase formation between V, Al, Ni, and Au in V/Al/Ni/Au metal stacks on n-Al0.65Ga0.35N:Si. In particular, the influence…
Simulation of the Spectral Behavior in High-Power Distributed Feedback Lasers above Threshold
/forschung/publikationen/simulation-of-the-spectral-behavior-in-high-power-distributed-feedback-lasers-above-threshold
We report on the simulations of mode hopping behavior in semiconductor distributed feedback lasers with asymmetric facet reflectivities above threshold and its dependence on the phase between the…
Numerical Analysis of High-Brightness Tapered Ridge-Waveguide Lasers
/forschung/publikationen/numerical-analysis-of-high-brightness-tapered-ridge-waveguide-lasers
In this work, we present a simulation-based analysis of a CW driven tapered ridge-waveguide laser having a high lateral brightness of 5W·mm-1mrad-1 at 2.5W optical output power.
Wideband Vector Corrected Measurements on a Modified Vector Network Analyzer (VNA) System
/forschung/publikationen/wideband-vector-corrected-measurements-on-a-modified-vector-network-analyzer-vna-system
Vector corrected wideband measurements on a modified vector network analyzer system are presented using wideband modulated signals as stimulus. The modified system allows intermediate frequency (IF)…
GaN-Based Multichip Half-Bridge Power Module Integrated on High-Voltage AlN Ceramic Substrate
/forschung/publikationen/gan-based-multichip-half-bridge-power-module-integrated-on-high-voltage-aln-ceramic-substrate
Power electronic systems employing wide-bandgap GaN transistors promise high efficiency operation and power density but require minimized parasitic circuit elements and an effective cooling concept.…
Dual-Band Power Amplifier Design at 28/38 GHz for 5G New Radio Applications
/forschung/publikationen/dual-band-power-amplifier-design-at-2838-ghz-for-5g-new-radio-applications
This paper presents the design of a dual-band power amplifier (PA) featuring similar performance at 28 GHz and 38 GHz. In the new radio (NR) of the fifth generation (5G) communication…
Power and brightness scaling of GaAs-based diode lasers and modules for direct and pump applications
/forschung/publikationen/power-and-brightness-scaling-of-gaas-based-diode-lasers-and-modules-for-direct-and-pump-applications
We present an overview of recent developments of brilliant high-power diode lasers and diode laser systems as direct or pump sources, containing high duty cycle and CW systems, ranging from…
A 315 GHz Source with Integrated Antenna in InP-DHBT Technology
/forschung/publikationen/a-315-ghz-source-with-integrated-antenna-in-inp-dhbt-technology
A 315-GHz source with integrated antenna is presented. It consists of a harmonic oscillator and a patch antenna. The harmonic oscillator is realized based on the push-push topology using a…