10 GB/s bit-synchronizer circuit with automatic timing alignment by clock phase shifting using quantum-well AlGaAs/GaAs/AlGaAs. - Peter Wennekers; Ulrich Novotny; Axel Hülsmann; Gudrun Kaufel; Klaus Köhler; Brian Raynor; Joachim Schneider (IEEE J. Solid State Circuits, 1992)

Integrated laser-diode voltage driver for 20-Gb/s optical systems using 0.3- mu m gate length quantum-well HEMT's. - Zhi-Gong Wang; Manfred Berroth; Ulrich Nowotny; Manfred Ludwig; Peter Hofmann; Axel Hülsmann; Klaus Köhler; Brian Raynor; Joachim Schneider (IEEE J. Solid State Circuits, 1993)

Coplanar millimeter-wave ICs for W-band applications using 0.15 μm pseudomorphic MODFETs. - Michael Schlechtweg; William H. Haydl; Axel Bangert; Jürgen Braunstein; Paul J. Tasker; Ludger Verweyen; Hermann Massler; Wolfgang Bronner; Axel Hülsmann; Klaus Köhler (IEEE J. Solid State Circuits, 1996)

20-40 Gb/s 0.2-μm GaAs HEMT chip set for optical data receiver. - Manfred Lang; Zhi-Gong Wang; Zhihao Lao; Michael Schlechtweg; Andreas Thiede; Michaela Rieger-Motzer; Martin Sedler; Wolfgang Bronner; Gudrun Kaufel; Klaus Köhler; Axel Hülsmann; Brian Raynor (IEEE J. Solid State Circuits, 1997)

35-GHz static and 48-GHz dynamic frequency divider ICs using 0.2-μm AlGaAs/GaAs-HEMTs. - Zhihao Lao; Wolfgang Bronner; Andreas Thiede; Michael Schlechtweg; Axel Hülsmann; Michaela Rieger-Motzer; Gudrun Kaufel; Brian Raynor; Martin Sedler (IEEE J. Solid State Circuits, 1997)

40-Gb/s high-power modulator driver IC for lightwave communication systems. - Zhihao Lao; Andreas Thiede; Ulrich Nowotny; Hariolf Lienhart; Volker Hurm; Michael Schlechtweg; Jochen Hornung; Wolfgang Bronner; Klaus Köhler; Axel Hülsmann; Brian Raynor; Theo Jakobus (IEEE J. Solid State Circuits, 1998)

Mixed signal integrated circuits based on GaAs HEMTs. - Andreas Thiede; Zhi-Gong Wang; Michael Schlechtweg; Manfred Lang; Petra Leber; Zhihao Lao; Ulrich Nowotny; Volker Hurm; Michaela Rieger-Motzer; Manfred Ludwig; Martin Sedler; Klaus Köhler; et al. (IEEE Trans. Very Large Scale Integr. Syst., 1998)

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)

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)

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)