O
Oliver Ambacher
Researcher at Fraunhofer Society
Publications - 862
Citations - 29006
Oliver Ambacher is an academic researcher from Fraunhofer Society. The author has contributed to research in topics: Amplifier & Monolithic microwave integrated circuit. The author has an hindex of 64, co-authored 848 publications receiving 26256 citations. Previous affiliations of Oliver Ambacher include Osram & Siemens.
Papers
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Journal ArticleDOI
High-performance 60 GHz MMICs for wireless digital communication in 100 nm mHEMT technology
D. Lopez-Diaz,Ingmar Kallfass,Axel Tessmann,Rainer Weber,Hermann Massler,Arnulf Leuther,Michael Schlechtweg,Oliver Ambacher +7 more
TL;DR: This paper presents essential building blocks and a novel single-chip low complexity transceiver Monolithic Microwave Integrated Circuit (MMIC) with integrated antenna switches for 60 GHz communication, fabricated in a 100 nm metamorphic high electron mobility transistor (mHEMT) technology.
N-Methylmorpholine-N-oxide ring cleavage registration by ESR under heating conditions of the Lyocell process
TL;DR: In this article, the alkylnitroxyl type radicals -CH(2)-NO-CH(3) in pure N-methylmorpholine-Noxide monohydrate (NMMO) were observed in pure NMMO as well as in cellulose/NMMO solutions by ESR at temperatures of the industrial Lyocell process.
Proceedings ArticleDOI
Balanced Microstrip AlGaN/GaN HEMT Power Amplifier MMIC for X-Band Applications
Jutta Kuhn,F. van Raay,Rudiger Quay,Rudolf Kiefer,Wolfgang Bronner,Matthias Seelmann-Eggebert,Michael Schlechtweg,Michael Mikulla,Oliver Ambacher,Manfred Thumm +9 more
TL;DR: In this paper, a 0deg/90deg balanced microstrip AlGaN/GaN HEMT power amplifier MMIC demonstrator is presented for X-band frequencies in microstrip line technology on thinned s.i.
Proceedings ArticleDOI
Isotropic dry-etching of SiC for AlGaN/GaN MEMS fabrication
F. Niebelschütz,Joerg Pezoldt,Th. Stauden,Volker Cimalla,Katja Tonisch,Klemens Brückner,Matthias Hein,Oliver Ambacher,Andreas Schober +8 more
TL;DR: In this article, an isotropic fluorine based process was proposed to etch 4H-SiC substrates compatible with standard metallic etch masks and reasonable etching rates.
Proceedings ArticleDOI
A 96 GHz radar system for respiration and heart rate measurements
Serdal Ayhan,Sebastian Diebold,Steffen Scherr,Axel Tessmann,Oliver Ambacher,Ingmar Kallfass,Thomas Zwick +6 more
TL;DR: A 96 GHz continuous wave (CW) radar system based on waveguide-packaged MMIC radar components is set-up for accurate determination of human chest displacements and results are in good agreement with the actual behavior of the human target.