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  • High power 150 GHz Schottky based varactor doubler 
    MONTERO-DE-PAZ, J.; SOBORNYTSKYY, M.; HOEFLE, M.; COJOCARI, O. (IEEE, 2016)
    Presented is the design, simulation and characterization of a high power 150 GHz Schottky based varactor doubler. The designed doubler works in the 67.5 GHz-82 GHz input frequency band with an input power of 25 dBm (315 ...
  • High Power Discrete Schottky Diodes Based 275-305 GHz Transceiver for FMCW-Rada 
    MORO-MELGAR, D.; COJOCARI, O.; OPREA, I.; HOEFLE, H.; RICKES, M. (IEEE, 2018)
    A heterodyne 275-305 GHz transceiver intended for frequency modulated continuous wave radar applications is presented here. A commercial E-band active multiplication chain is used to provide the required power and frequency ...
  • High Power High Efficiency 270-320 GHz Source Based on Discrete Schottky Diodes 
    MORO-MELGAR, D.; COJOCARI, O.; OPREA, I. (IEEE, 2018)
    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 ...
  • High quality Nb and Nb/CuNi nanolayers for superconducting spintronics 
    ZDRAVKOV, V.; MORARI, R.; ANTROPOV, E.; PREPELITSA, A.; SOCROVISCIUC, A.; SURDU, A.; COJOCARU, V.; SIDORENKO, A. (Technical University of Moldova, 2009)
    Advanced technological process for preparation of high quality superconducting Nb and ferromagnetic CuNi -alloy nanolayers of large area (~200 mm2) is developed based on DC-magnetron sputtering. Homogeneity and proper ...
  • High Quantum Efficiency Photocathode Using Surface Plasmon Resonance 
    MIMURA, Hidenori; YOICHIRO, Neo; TORU, Aoki; TAKAHIRO, Matsumoto (Tehnica UTM, 2015)
    Super-radiant Smith-Purcell radiation using a pre-bunched electron beam is a very attractive terahertz light source because it does not require an extremely high initial current density. In order to modulate an electron ...
  • High Resolution Position Inductive Transducers for Harsh Environmental Conditions 
    JULA, Nicolae; URSU, Tudor; DIACONESCU, Cristina Nicoleta; OBREJA, Radu (Technical University of Moldova, 2011)
    In this paper the authors present certain theoretical, conceptual and technological aspects on main types of high resolution inductive transducers for harsh environmental conditions. Inductive resolvers, as well as inductive ...
  • High resolution semiconductor switch 
    STAMOV, I.; SÎRBU, N.; DOROGAN, A. (Romanian Inventors Forum, 2019)
    The active layer of the high resolution semiconductor switch is based on single crystal compound Ag3AsS3 placed between metal electrodes.
  • High sensitive tellurium based NO2 gas sensor 
    TSIULYANU, D.; MARIAN, S.; MIRON, V.; LIESS, H.-D. (Elsevier, 2001)
    For the first time it is shown, that tellurium based thin films exhibit high sensitivity to nitrogen dioxide at room temperature. The resistance of the tellurium films decreases reversibly in the presence of NO2. The ...
  • High sensitivity and low dark current PIN photodiode with homojunction in n-InGaAaS/InP isotype heterostructure 
    BUDIANU, E.; PURICA, M.; RUSU, E.; NAN, S. (IEEE, 1997)
    The preparation and properties of Zn-diffusion homojunction InP/In/sub 0.53/Ga/sub 0.47/As photodiodes capable to operate in the 0.8-1.7 /spl mu/m wavelength range are described. These PIN photodiodes exhibit a sensitivity ...
  • High Thermoelectric Properties in Quasi-One-Dimensional Organic Crystals 
    SANDULEAC, Ionel; CASIAN, Anatolie (Springer Nature Switzerland, 2021)
    We present a short review about TE properties of organic materials and especially of quasi-one-dimensional (Q1D) organic crystals of p-type tetrathiotetracene-iodide, TTT2I3, and of n-type tetrathiotetracene-tetracyanoqu ...
  • High-Efficiency Electronic Transformer for Powering of Individual Consumers from the Medium Voltage Grid 
    BERZAN, Vladimir; ERMURACHI, Iurie (Institute of Electrical and Electronics Engineers, 2017)
    The proposed and argued concept for realization includes the possibility of realizing an average of the medium voltage transformer, for example, with 10 / 0.22 kV parameters. Equipment with these parameters is known as ...
  • A high-efficient cooling tower for removing the heat generated by process plants 
    ZASAVITSKY, E. A.; KARAGENOV, D. I.; SEPTITCHI, A. IU.; SIDORENKO, A. S. (Technical University "Gheorghe Asachi" of Iași, 2020)
    Elaborarea se referă la echipamentele și unitățile industriale, dar mai precis - la eliminarea căldurii generate de instalațiile tehnologice existente în prezent. Este elaborat un turn de răcire cu circuit ...
  • The high-field galvanomagnetic effects in bicrystals of 3D topological insulator Bi 1-x - Sbx (0. 07 ≤ x ≤ 0.15) 
    MUNTYANU, F. M.; GILEWSKI, A.; ROGACKI, K.; CHISTOL, V. (Academia de Ştiinţe a Moldovei, 2014)
    We report the results of the investigations at He-liquid temperatures of the galvanomagnetic effects of twisting bicrystals of 3D topological insulator (TI) Bi1−xSbx (0.07 < x <0.15) to elucidate the peculiarities of ...
  • High-field peculiarities of galvanomagnetic quantum oscillations in Bi bicrystals with nano-width superconducting crystallite interfaces 
    MUNTYANU, F. M.; GILEWSKI, A.; NENKOV, K.; ZALESKI, A. J.; PALEWSKI, T.; CHISTOL, V. (Elsevier, 2013)
    We present the result of high-field (up to 40T) galvanomagnetic study of bismuth bicrystals with nano-width crystallite interfaces (100nm). At B>2T directed along the interface plane in the quantum oscillations spectrum ...
  • High-fields longitudinal hall effect in bi bicrystals with nano-width superconducting crystallite interfaces 
    MUNTYANU, F. M.; GILEWSKI, A.; NENKOV, K.; ZALESKI, A. J.; PALEWSKI, T.; CHISTOL, V. (Institutul de Fizică Aplicată, 2012)
    The results indicate that in bicrystals there are spin-oriented carriers which are located in spectrum of Landau levels at particular orientation of the magnetic field.
  • High-frequency nonlinear characteristics of resonant-tunnelling diodes 
    FEIGINOV, Michael; SYDLO, Cezary; COJOCARI, Oleg; MEISSNER, Peter (American Institute of Physics, 2011)
    The nonlinear response of resonant-tunnelling diodes (RTDs) is analysed theoretically at high frequencies (HFs), which are far above the diode’s tunnel-relaxation-time limit. We show that the HF I-V curve in this regime ...
  • High-Performance Gas Sensors Using Heterostructures based on Binary and Ternary Metal Oxides 
    ABABII, Nicolai; BODDULURI, Mani Teja; KRÜGER, Helge; HANSEN, Sandra; POSTICA, Vasile; LUPAN, Oleg; ADELUNG, Rainer (IEEE, 2021)
    The gas sensing properties of heterojunctions based on binary and ternary metal oxides (CuAl 2 O 4 /Al 2 O 3 /CuO/Cu 2 O, ZnAl 2 O 4 /ZnO and Zn 2 SnO 4 ) were investigated in detail and demonstrated excellent sensitivity ...
  • High-performance near-ultraviolet avalanche photodetectors based on ZnSe 
    SIRKELI, Vadim P.; NEDEOGLO, Natalia D.; NEDEOGLO, Dmitrii D.; YILMAZOGLU, Oktay; HAJO, Ahid S.; PREU, Sascha; KÜPPERS, Franko; HARTNAGEL, Hans L. (Tehnica UTM, 2018)
    This We report on high-responsivity, fast nearultraviolet avalanche photodetectors based on bulk ZnSe employing a metal-semiconductor-metal structure. A very high responsivity of 2.42 A/W and 4.44 A/W at 20 V bias voltage ...
  • High-Power MM-Wave Frequency Multipliers 
    COJOCARI, O.; MORO-MELGAR, D.; OPREA, I. (IEEE, 2019)
    A novel approach has been developed on monolithic integration of Schottky diodes with CVD diamond substrate for improved thermal dissipation. This allowed development of mmwave frequency multipliers with unmatched ...
  • High-Power MM-Wave Sources based on Schottky Diodes 
    COJOCARI, Oleg; MORO-MELGAR, Diego; OPREA, Ion; HOEFLE, Matthias; RICKES, Martin (IEEE, 2018)
    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. ...

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