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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…
Technology for the Heterointegration of InP DHBT Chiplets on a SiGe BiCMOS Chip for mm-wave MMICs
/en/research/publications/technology-for-the-heterointegration-of-inp-dhbt-chiplets-on-a-sige-bicmos-chip-for-mm-wave-mmics
We present a low-temperature flip-chip-based mounting technology, enabling integration of indium phosphide (InP)-based chiplets on BiCMOS. The process temperatures of well below 200°C allow to…
Temperature dependence of the complex permittivity in microwave range of some industrial polymers
/en/research/publications/temperature-dependence-of-the-complex-permittivity-in-microwave-range-of-some-industrial-polymers
The microwave properties of a number of polymers common in industry are investigated. A cylindrical resonator in the TM012 mode is used. The cavity perturbation method and detailed COMSOL simulations…
Precise prediction of optical behaviour of mechanically stressed edge emitting GaAs devices
/en/research/publications/precise-prediction-of-optical-behaviour-of-mechanically-stressed-edge-emitting-gaas-devices
The presence of a thermally annealed metallization layer on top of a GaAs slab waveguide proofed to be of strong impact on the optical device behavior. Induced by the stress on the chip the…
A 3-D Printed Helix for Traveling-Wave Tubes
/en/research/publications/a-3-d-printed-helix-for-traveling-wave-tubes
In this work, a 3-D printed copper helix for a traveling-wave tube (TWT) is reported. The fabricated helix was designed to be used in a TWT operating at millimeter-wave frequencies (60-80 GHz).…