Metamorphic HEMT MMICs and Modules for Use in a High-Bandwidth 210 GHz Radar. - Axel Tessmann; Ingmar Kallfass; Arnulf Leuther; Hermann Massler; Michael Kuri; Markus Riessle; Martin Zink; Rainer Sommer; Alfred Wahlen; Helmut Essen; Volker Hurm; Michael Schlechtweg; et al. (IEEE J. Solid State Circuits, 2008)

Reliability and degradation mechanism of AlGaN/GaN HEMTs for next generation mobile communication systems. - Maximilian Dammann; W. Pletschen; Patrick Waltereit; Wolfgang Bronner; Rüdiger Quay; Stefan Müller; Michael Mikulla; Oliver Ambacher; P. J. van der Wel; S. Murad; T. Rödle; R. Behtash; et al. (Microelectron. Reliab., 2009)

Efficient AlGaN/GaN Linear and Digital-Switch-Mode Power Amplifiers for Operation at 2 GHz. - Stephan Maroldt; Dirk Wiegner; Stanislav Vitanov; Vassil Palankovski; Rüdiger Quay; Oliver Ambacher (IEICE Trans. Electron., 2010)

W-band radiometer system with switching front-end for multi-load calibration. - Ernst Weissbrodt; Ingmar Kallfass; Axel Hülsmann; Axel Tessmann; Arnulf Leuther; Hermann Massler; Oliver Ambacher (IGARSS, 2011)

Metamorphic HEMT MMICs and Modules Operating Between 300 and 500 GHz. - Axel Tessmann; Arnulf Leuther; Volker Hurm; Ingmar Kallfass; Hermann Massler; Michael Kuri; Markus Riessle; Martin Zink; Rainer Lösch; Matthias Seelmann-Eggebert; Michael Schlechtweg; Oliver Ambacher (IEEE J. Solid State Circuits, 2011)

Critical factors influencing the voltage robustness of AlGaN/GaN HEMTs. - M. Cäsar; Maximilian Dammann; Vladimir Polyakov; Patrick Waltereit; Rüdiger Quay; Michael Mikulla; Oliver Ambacher (Microelectron. Reliab., 2011)

Millimeter-Wave Monolithic Integrated Circuits and Modules for Safety and Security Applications. - Michael Schlechtweg; Axel Tessmann; Axel Hülsmann; Ingmar Kallfass; Arnulf Leuther; Rolf Aidam; Christian Zech; Ulrich J. Lewark; Hermann Massler; Markus Riessle; Martin Zink; Josef Rosenzweig; et al. (Future Security, 2012)

Active load modules for W-band radiometer calibration. - Ernst Weissbrodt; Axel Tessmann; Michael Schlechtweg; Ingmar Kallfass; Oliver Ambacher (IGARSS, 2012)

Study on data transmission of complex modulated signals using an MMIC-based 220 GHz wireless link. - Jochen Antes; Tobias Mahler; Thomas Zwick; Axel Tessmann; Oliver Ambacher; Ingmar Kallfass (ISSSE, 2012)

100 Gbit/s wireless link with mm-wave photonics. - Swen Koenig; Florian Boes; Daniel Lopez-Diaz; Jochen Antes; Ralf Henneberger; René Schmogrow; David Hillerkuss; Robert Palmer; Thomas Zwick; Christian Koos; Wolfgang Freude; Oliver Ambacher; et al. (OFC/NFOEC, 2013)

Wireless communications on THz carriers takes shape. - Wolfgang Freude; Swen Koenig; Daniel Lopez-Diaz; Jochen Antes; Florian Boes; Ralf Henneberger; Arnulf Leuther; Axel Tessmann; René Schmogrow; David Hillerkuss; Robert Palmer; Thomas Zwick; et al. (ICTON, 2014)

Influence of surface states on the voltage robustness of AlGaN/GaN HFET power devices. - Matthias Wespel; Martina Baeumler; Vladimir Polyakov; Maximilian Dammann; Richard Reiner; Patrick Waltereit; Rüdiger Quay; Michael Mikulla; Oliver Ambacher (Microelectron. Reliab., 2014)

High-voltage stress time-dependent dispersion effects in AlGaN/GaN HEMTs. - Matthias Wespel; Maximilian Dammann; Vladimir Polyakov; Richard Reiner; Patrick Waltereit; B. Weiss; Rüdiger Quay; Michael Mikulla; Oliver Ambacher (IRPS, 2015)

Performance of tri-gate AlGaN/GaN HEMTs. - Mohamed Alsharef; Ralf Granzner; Frank Schwierz; Erdin Ture; Rüdiger Quay; Oliver Ambacher (ESSDERC, 2016)

Study of a silicon parallel plate capacitor as a dew point sensor. - Jochen Stehle; Oliver Ambacher; Ashwin Samarao; Gary Yama; Uma Krishnamoorthy (IEEE SENSORS, 2016)

Spectroscopic Measurement of Material Properties Using an Improved Millimeter-Wave Ellipsometer Based on Metallic Substrates. - Mathias Klenner; Christian Zech; Axel Hülsmann; Jutta Kuhn; Michael Schlechtweg; Oliver Ambacher (IEEE Trans. Instrum. Meas., 2016)

Flexural plate wave sensors with buried IDT for sensing in liquids. - Markus Reusch; Katarzyna Hole; Agne Zukauskaite; Vadim Lebedev; Nicolas Kurz; Oliver Ambacher (IEEE SENSORS, 2017)

A Dielectric-Filled Cavity-Backed Lens-Coupled Dipole Antenna at 100 GHz. - Alexander Dyck; Michael Kuri; Markus Rosch; Axel Tessmann; Oliver Ambacher (RWS, 2019)

Failure Analysis of 100 nm AlGaN/GaN HEMTs Stressed under On- and Off-State Stress. - Tobias Kemmer; Michael Dammann; Martina Baeumler; Vladimir Polyakov; Peter Brückner; Helmer Konstanzer; Rüdiger Quay; Oliver Ambacher (IRPS, 2020)

Building Blocks for GaN Power Integration. - Michael Basler; Richard Reiner; Stefan Moench; Fouad Benkhelifa; Philipp Döring; Patrick Waltereit; Rüdiger Quay; Oliver Ambacher (IEEE Access, 2021)