Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Ion, Oprea"'
Publikováno v:
2020 50th European Microwave Conference (EuMC).
A 500 GHz source based on discrete Schottky diodes technology is reported in this work. The high frequency part developed by ACST consists of a high power and high efficiency doublet at 135-160 GHz and a tripler at 475-540 GHz. Both multipliers featu
Autor:
Ion, Oprea1 oprea@caz.mecen.pub.ro
Publikováno v:
International Conference on Thermal Equipment, Renewable Energy & Rural Development. 2015, p103-106. 4p.
Publikováno v:
2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz).
This contribution summarizes recent achievements of European MM- and SubMM-Wave receiver technology using Schottky diodes and THz-MICs fabricated by so-called Film-Diode (FD) process. The FD-process has particularly been developed for applications at
Publikováno v:
2018 15th European Radar Conference (EuRAD)
A 300 GHz source based on discrete Schottky diodes technology is reported in this work. The high frequency part developed by ACST consists of two high power and high efficiency doublers, one at 135-160 GHz and a second one at 270-320 GHz. Both double
Publikováno v:
2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz).
A novel approach has been developed at ACST for realization of high-power frequency multipliers in MM/SubMM-Wave range. This approach is based on discrete Schottky structures with monolithically-integrated diamond heatspreader. This technology allows
Autor:
Franko Küppers, Ion Oprea, Hans L. Hartnagel, Shihab Al-Daffaie, V. P. Sirkeli, Oktay Yilmazoglu, Duu Sheng Ong
Publikováno v:
SPIE Proceedings.
II-VI compounds are promising materials for the fabrication of room-temperature terahertz devices due to their beneficial properties like as type-I conduction band alignment, high breakdown field strength (~331 kV/cm for ZnSe vs. ~80 kV/cm for GaAs),
Autor:
Katharina Haehnsen, Ion Oprea, Matthias Hoefle, Andreas Penirschke, Rolf Jakoby, Oleg Cojocari
Publikováno v:
Journal of Infrared, Millimeter, and Terahertz Waves. 35:891-908
Compact and highly responsive millimeter wave planar Schottky detectors are proposed for uni-planar and low-cost fabrication. For optimum power transfer, the zero-bias Schottky diodes are impedance matched by the antenna design itself, with an establ
Publikováno v:
2016 46th European Microwave Conference (EuMC).
A series of THz-MIC-s were successfully fabricated by a so-called Film-Diode process. Sub-millimeter-wave multipliers based on these MIC-s were tested with excellent results. Peak measured output power of these multipliers was 14mW@332GHz, 12mW@440GH
Autor:
Sergiu Spataru, Anders Rand Andersen, Peter Behrensdorff Poulsen, Ronni Basu, Jørgen Schou, Sune Thorsteinsson, Matei-Ion Oprea, Dezso Sera
Publikováno v:
Thorsteinsson, S, Poulsen, P B, Schou, J, Andersen, A R, Basu, R, Sera, D, Spataru, S & Oprea, M-I 2016, Novel field test design for acquisition of DC and AC parameters during service . in Proceedings of IEEE 43rd Photovoltaic Specialist Conference 2016 . IEEE, pp. 1608-1610, 2016 IEEE 43rd Photovoltaic Specialists Conference, Portland, Oregon, United States, 05/06/2016 . https://doi.org/10.1109/PVSC.2016.7749892
Thorsteinsson, S, Poulsen, P B, Schou, J, Andersen, A R, Basu, R, Sera, D, Spataru, S & Oprea, M-I 2016, ' Novel field test design for acquisition of DC and AC parameters during service ', 2016 IEEE 43rd Photovoltaic Specialists Conference, Portland, United States, 05/06/2016-10/06/2016 .
Thorsteinsson, S, Poulsen, P, Schou, J, Andersen, A R, Basu, R, Sera, D, Spataru, S & Oprea, M 2016, Novel field test design for acquisition of DC and AC parameters during service . in Proceedings of 43rd IEEE Photovoltaic Specialists Conference (PVSC), 2016 . IEEE Press, pp. 1608-1610, 43rd IEEE Photovoltaic Specialist Conference, Portland, United States, 05/06/2016 . https://doi.org/10.1109/PVSC.2016.7749892
Technical University of Denmark Orbit
Thorsteinsson, S, Poulsen, P B, Schou, J, Andersen, A R, Basu, R, Sera, D, Spataru, S & Oprea, M-I 2016, ' Novel field test design for acquisition of DC and AC parameters during service ', 2016 IEEE 43rd Photovoltaic Specialists Conference, Portland, United States, 05/06/2016-10/06/2016 .
Thorsteinsson, S, Poulsen, P, Schou, J, Andersen, A R, Basu, R, Sera, D, Spataru, S & Oprea, M 2016, Novel field test design for acquisition of DC and AC parameters during service . in Proceedings of 43rd IEEE Photovoltaic Specialists Conference (PVSC), 2016 . IEEE Press, pp. 1608-1610, 43rd IEEE Photovoltaic Specialist Conference, Portland, United States, 05/06/2016 . https://doi.org/10.1109/PVSC.2016.7749892
Technical University of Denmark Orbit
Being able to monitor early signs of PV module degradation, is needed to ensure stable power production throughout the service life of a PV installation. Recently, impedance spectroscopy is proven to be a useful tool for detection of the presence and
Publikováno v:
2013 38th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz).
This paper presents a method for estimation of junction temperature of a Schottky diode used in a recently developed frequency doubler to 332 GHz. Our particular interest was the validation of the thermal model of the diode by comparison of the simul