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Simulation of the Spectral Behavior in High-Power Distributed Feedback Lasers above Threshold
/en/research/publications/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
/en/research/publications/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
/en/research/publications/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
/en/research/publications/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
/en/research/publications/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
/en/research/publications/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
/en/research/publications/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…
A Highly Efficient W-Band Rectifier MMIC in InP HBT Technology
/en/research/publications/a-highly-efficient-w-band-rectifier-mmic-in-inp-hbt-technology
This paper presents a highly-efficient on-chip W-band single-diode rectifier for energy recovery in 6G transmitters and wireless power transfer applications. For the first time a W-band rectifier has…
Localization of Trapping Effects in GaN HEMTs with Pulsed S-parameters and Compact Models
/en/research/publications/localization-of-trapping-effects-in-gan-hemts-with-pulsed-s-parameters-and-compact-models
Reliable operation at high frequencies has established GaN-based electronics in the high-power and high-frequency market. Investigating the impact of trapping effects on the frequency evolution of…
An Efficient and Fast Reverse Buck Converter for High-Power Envelope-Tracking Systems
/en/research/publications/an-efficient-and-fast-reverse-buck-converter-for-high-power-envelope-tracking-systems
This paper presents an efficient and fast reverse buck converter targeting high-power envelope-tracking applications with up to 20 MHz instantaneous bandwidth. The power stage is based on RF…