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Makhlouf, Sumer ; Cojocari, Oleg ; Hofmann, Martin ; Nagatsuma, Tadao ; Preu, Sascha ; Weimann, Nils ; Hübers, Heinz-Wilhelm ; Stöhr, Andreas (2023)
Terahertz Sources and Receivers: From the Past to the Future.
In: IEEE Journal of Microwaves, 3 (3)
doi: 10.1109/JMW.2023.3282875
Article, Bibliographie
Preu, Sascha ; Mittendorff, Martin ; Winnerl, Stephan ; Cojocari, Oleg ; Penirschke, Andreas (2015)
THz Autocorrelators for ps Pulse Characterization Based on Schottky Diodes and Rectifying Field-Effect Transistors.
In: IEEE Transactions on Terahertz Science and Technology, 91 (9)
doi: 10.1109/TTHZ.2015.2482943
Article, Bibliographie
Penirschke, Andreas ; Sobornytskyy, M. ; Preu, Sascha ; Mittendorff, Martin ; Winnerl, Stephan ; Hoefle, Matthias ; Cojocari, Oleg ; Jakoby, Rolf (2014)
Compact quasi-optical Schottky detector with fast voltage response.
Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2014 39th International Conference on.
Conference or Workshop Item, Bibliographie
Hoefle, Matthias ; Penirschke, Andreas ; Amrhein, Andreas ; Cojocari, Oleg ; Trier, Marc ; Piironen, Petri ; Jakoby, Rolf (2012)
Detector Design for 89GHz Direct Detection Radiometer with New European Low Noise Zero-Bias Schottky Diodes.
ESA Microwave Technology and Techniques Workshop 2012.
Conference or Workshop Item, Bibliographie
Hoefle, Matthias ; Schneider, Katharina ; Penirschke, Andreas ; Cojocari, Oleg ; Jakoby, Rolf (2011)
Characterization and impedance matching of new high sensitive planar Schottky detector diodes.
German Microwave Conference (GeMIC) 2011.
Conference or Workshop Item, Bibliographie
Hoefle, Matthias ; Penirschke, Andreas ; Cojocari, Oleg ; Jakoby, Rolf (2011)
Advanced RF characterization of new planar high sensitive zero-bias Schottky diodes.
European Microwave Integrated Circuits Conference (EuMIC).
Conference or Workshop Item, Bibliographie
Cojocari, Oleg ; Oprea, I. ; Sydlo, Cezary ; Zimmermann, R. ; Walber, A. ; Henneberger, R. ; Hartnagel, Hans L. (2007)
Design and characterization of Schottky structures for THz-applications.
In: Frequenz, 61
Article, Bibliographie
Cojocari, Oleg (2007)
Schottky technology for THz-electronics.
Technische Universität Darmstadt
Ph.D. Thesis, Bibliographie
Cojocari, Oleg ; Oprea, I. ; Sydlo, Cezary ; Zimmermann, R. ; Walber, A. ; Henneberger, R. ; Hartnagel, Hans L. (2007)
THz Schottky diodes on epitaxial AIGaAs-membrane.
Conference or Workshop Item, Bibliographie
Schür, Jan ; Biber, Stephan ; Cojocari, Oleg ; Sydlo, Cezary ; Schmidt, Lorenz-Peter ; Hartnagel, Hans-Ludwig (2006)
600 GHz waveguide mixer fabricated by combined conventional and silicon micromachining.
In: EuMA Þ Journal of the European Microwave Association, 1
Article, Bibliographie
Schuer, J. ; Biber, S. ; Cojocari, Oleg ; Sydlo, C. ; Schmidt, L.-P. ; Hartnagel, H.-L. (2006)
Comparative noise characterization and conversion loss measurements of Schottky diode mixers at 600~GHz.
Conference or Workshop Item, Bibliographie
Cojocari, Oleg ; Hartnagel, Hans L. (2006)
Generalized model of the metal/n-GaN Schottky interface and improved performance by electrochemical Pt deposition.
In: Journal of Vacuum Science and Technology B, 24
Article, Bibliographie
Biber, S. ; Schuer, J. ; Cojocari, Oleg ; Hartnagel, H.-L. ; Schmidt, L.-P. (2006)
Silicon micomachining and electrical characterization of a 600 GHz Schottky-diode mixer with integrated octagonal horn antenna.
Conference or Workshop Item, Bibliographie
Mutamba, K. ; Yilmazoglu, Oktay ; Cojocari, Oleg ; Sydlo, Cezary ; Pavlidis, Dimitris ; Hartnagel, Hans L. (2006)
Technology of Wide-Bandgap Diode Struvtures for High Frequency Operation.
Conference or Workshop Item, Bibliographie
Schuer, J. ; Biber, S. ; Cojocari, Oleg ; Schmidt, L.-P. ; Hartnagel, H.-L. (2005)
600 GHz GaAs Schottky diode mixer in split-block technology.
Conference or Workshop Item, Bibliographie
Schür, J. ; Biber, S. ; Cojocari, Oleg ; Mottet, B. ; Schmidt, L.-P. ; Hartnagel, H.-L. (2005)
600 GHz heterodyne mixer in waveguide technology using a GaAs Schottky diode.
Conference or Workshop Item, Bibliographie
Sydlo, Cezary ; Kögel, Benjamin ; Cojocari, Oleg ; Feiginov, Michael N. ; Hartnagel, Hans L. ; Meissner, Peter (2005)
Broadband power detector using a circularly-toothed planar logarithmic-periodic antenna.
Conference or Workshop Item, Bibliographie
Cojocari, Oleg ; Biber, S. ; Mottet, Bastian ; Rodriguez-Girones Arboli, Manuel ; Hartnagel, Hans L. ; Schmidt, L.-P. (2005)
DC and IF-noise performance optimisation of GaAs Schottky diodes for THz applications.
In: Semiconductor science and technology, 20
Article, Bibliographie
Cojocari, Oleg ; Sydlo, Cezary ; Hartnagel, Hans L. ; Tiginyanu, I. M. (2005)
Quasi-vertical Schottky-structures for THZ-Applications.
Conference or Workshop Item, Bibliographie
Mottet, B. ; Sydlo, Cezary ; Mutamba, ; Cojocari, Oleg ; Hartnagel, Hans L. (2005)
RF and thermal design of compound semiconductor devices using MEMS approach.
In: Frequenz, 59
Article, Bibliographie
Cojocari, Oleg ; Sydlo, C. ; Hartnagel, H.-L. ; Biber, S. ; Schür, J. ; Schmidt, L.-P. (2005)
Schottky-structures for THz-Applications based on quasi-vertical design-concept.
Conference or Workshop Item, Bibliographie
Cojocari, Oleg ; Sydlo, C. ; Hartnagel, H.-L. (2005)
WID : a new Schottky-Structure design for THz-applications.
Conference or Workshop Item, Bibliographie
Biber, S. ; Cojocari, Oleg ; Rehm, G. ; Mottet, Bastian ; Schmidt, L.-P. ; Hartnagel, Hans L. (2004)
A novel system for systematic microwave noise and DC characterization of terahertz Schottky diodes.
In: IEEE Transactions on Instrumentation and Measurement, 53 (2)
doi: 10.1109/TIM.2003.820487
Article, Bibliographie
Sydlo, Cezary ; Kögel, Benjamin ; Cojocari, Oleg ; Hartnagel, Hans L. ; Meissner, Peter (2004)
Characterisation of a circularly-toothed planar logarithmic-periodic antenna for broadband power detection.
In: Frequenz, 58 (9/10)
doi: 10.1515/FREQ.2004.58.9-10.207
Article, Bibliographie
Cojocari, Oleg ; Biber, S. ; Mottet, Bastian ; Hartnagel, Hans L. ; Schmidt, L.-P. (2004)
GaAs Schottky diode fabrication for THz-frequency mixer applications.
Conference or Workshop Item, Bibliographie
Cojocari, Oleg ; Popa, V. ; Ursaki, V. V. ; Tiginyanu, I. M. ; Hartnagel, Hans L. ; Daumiller, I. (2004)
GaN Schottky multiplier diodes prepared by electroplating : a study of passivation technology.
In: Semiconductor science and technology, 19
Article, Bibliographie
Cojocari, Oleg ; Biber, S. ; Mottet, Bastian ; Sydlo, Cezary ; Hartnagel, Hans L. ; Schmidt, L.-P. (2004)
IF-noise improvement of the GaAs Schottky diodes for THz-frequency mixer applications.
Conference or Workshop Item, Bibliographie
Schür, J. ; Biber, S. ; Gumbmann, F. ; Mottet, Bastian ; Cojocari, Oleg ; Schmidt, L.-P. ; Hartnagel, Hans L. (2004)
Micromachined split-block Schottky-diode mixer for 600GHz.
Conference or Workshop Item, Bibliographie
Cojocari, Oleg ; Popa, V. ; Ursaki, V. V. ; Tiginyanu, I. M. ; Mutamba, Kabula ; Saglam, Mustafa ; Hartnagel, Hans L. (2004)
Micrometer-size GaN Schottky-diodes for MM-wave frequency multipliers.
Conference or Workshop Item, Bibliographie
Mottet, Bastian ; Sydlo, Cezary ; Kögel, Benjamin ; Robillard, Q. de ; Cojocari, Oleg ; Hartnagel, Hans L. (2004)
The impact of process optimisation on planar THz-Schottky device reliability.
Conference or Workshop Item, Bibliographie
Cojocari, Oleg ; Biber, S. ; Rodriguez-Girones Arboli, Manuel ; Mottet, Bastian ; Marchand, L. ; Schmidt, L.-P. ; Hartnagel, Hans L. (2004)
A new structural approach for uniform sub-micrometer anode metallization of planar THz Schottky components.
In: Semiconductor science & technology, 19
Article, Bibliographie
Biber, S. ; Cojocari, Oleg ; Rehm, G. ; Mottet, Bastian ; Schmidt, L.-P. ; Hartnagel, Hans L. (2004)
A novel system for systematic IF noise and DC characterization of THz Schottky diodes.
In: IEEE Transactions on Instrumentation and Measurement, 53 (2)
doi: 10.1109/TIM.2003.820487
Article, Bibliographie
Biber, S. ; Schmidt, L.-P. ; Cojocari, Oleg ; Mottet, Bastian ; Rodriguez-Girones Arboli, Manuel ; Hartnagel, Hans L. (2003)
Systematic quality assessment of Schottky diodes for THz-applications.
Conference or Workshop Item, Bibliographie
Cojocari, Oleg ; Mottet, Bastian ; Rodriguez-Girones Arboli, Manuel ; Biber, S. ; Schmidt, L.-P. ; Hartnagel, Hans L. (2003)
Whisker-device-based optimisation of fabrication process for planar THz Schottky diode.
Conference or Workshop Item, Bibliographie
Ichizli, Victoria M. ; Rodriguez-Girones Arboli, Manuel ; Marchand, L. ; Garden, C. ; Cojocari, Oleg ; Mottet, Bastian ; Hartnagel, Hans L. (2002)
Process control and failure analysis implementation for THz Schottky-based components.
Conference or Workshop Item, Bibliographie
Ichizli, Victoria M. ; Rodriguez-Girones Arboli, Manuel ; Marchand, L. ; Garden, C. ; Cojocari, Oleg ; Mottet, Bastian ; Hartnagel, Hans L. (2002)
Process control methods for THz Schottky-based components.
Conference or Workshop Item, Bibliographie