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Browsing Articole ştiinţifice by Subject "Schottky diodes"

Browsing Articole ştiinţifice by Subject "Schottky diodes"

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  • 1/f-noise prediction in millimeter wave detectors based on quasi vertical Schottky diodes 
    HOEFLE, Matthias; PENIRSCHKE, Andreas; COJOCARI, Oleg; AMRHEIN, Andreas; DECOOPMAN, Thibaut; PIIRONEN, Petri; JAKOBY, Rolf (IEEE, 2013)
    A modeling concept for accurate prediction of 1/f-noise in millimeter wave Schottky detectors is presented. The concept is based on DC bias current measurements with precise knowledge of the diode structure. Key aspect is ...
  • 600 GHz GaAs Schottky diode mixer in split-block technology 
    SCHUR, J.; BIBER, S.; COJOCARI, O.; SCHMIDT, L.-P.; HARTNAGEL, H.-L. (IEEE, 2013)
    In this paper we present measurement results of a micro-machined split-block waveguide mixer for 600 GHz. The mixer implements a planar GaAs Schottky diode on a quartz substrate. Two different diode designs used for this ...
  • 89 GHz Schottky detector modules for MetOp-SG 
    HOEFLE, Matthias; COJOCARI, Oleg; RICKES, Martin; SOBORNYTSKYY, Mykola; MONTERO-DE-PAZ, Javier; DECOOPMAN, Thibaut; KANTANEN, Mikko; PÉRICHAUD, Marie-Genevieve; PIIRONEN, Petri (IEEE, 2016)
    Presented is an 89 GHz waveguide coupled direct detector based on ACST low-barrier Schottky diodes. Signal-to-noise ratio (SNR) values above 35 dB within 6 dB input power dynamic are achieved with high voltage responsivity ...
  • 89 GHz zero-bias Schottky detector for direct detection radiometry in European satellite programme MetOp-SG 
    HOEFLE, M.; PENIRSCHKE, A.; COJOCARI, O.; DECOOPMAN, T.; TRIER, M.; PIIRONEN, P.; PÉRICHAUD, M. G.; JAKOBY, R. (The Institution of Engineering and Technology, 2014)
    An 89 GHz waveguide coupled direct detector based on a low-barrier Schottky diode is presented. The main focus is to reduce white and 1/f noise to achieve high signal-to-noise ratio values above 35 dB. The design also ...
  • Addressing the temperature stability in an 89 GHz Schottky detector design for radiometry 
    HOEFLE, Matthias; PENIRSCHKE, Andreas; AMRHEIN, Andreas; COJOCARI, Oleg; TRIER, Marc; JAKOBY, Rolf (IEEE, 2012)
    A detector design for the 89 GHz channel of direct detection radiometers is proposed with high sensitive zerobias Schottky diodes. Particularly addressed is the diode's RF voltage responsivity drift with temperature at ...
  • Application of Zero-Bias Quasi-Optical Schottky-Diode Detectors for Monitoring Short-Pulse and Weak Terahertz Radiation 
    SEMENOV, A.; COJOCARI, O.; HÜBERS, H.; SONG, F.; KLUSHIN, A.; MÜLLER, A. (IEEE, 2010)
    Schottky diodes are well-known nonlinear elements allowing for effective detection and mixing of electromagnetic radiation in the range through microwave to terahertz. Although less sensitive than their superconducting ...
  • Broadband power detector using a circularly-toothed planar logarithmic-periodic antenna 
    SYDLO, C.; KÖGEL, B.; COJOCARI, O.; FEIGINOV, M.; HARTNAGEL, H. L.; MEISSNER, P. (IEEE, 2005)
    A broadband antenna has been coupled to a planar Schottky diode for the realisation of a sensitive power detector for mm-wave frequencies. The measured response curve is in agreement with calculations and shows values of ...
  • Broadband zero-bias Schottky detector for E-field measurements up to 100 GHz and beyond 
    HOEFLE, M.; PENIRSCHKE, A.; COJOCARI, O.; JAKOBY, R. (IEEE, 2013)
    A broadband detector for electrical field measurements is presented in this paper, deploying an attenuated dipole resonance. High sensitive zero-bias Schottky diodes with anode diameters of 1.5μm allow electrical field ...
  • Characterisation of low-barrier Schottky diodes for millimeter wave mixer applications 
    KHANAL, Subash; KIURU, Tero; HOEFLE, Matthias; MONTERO, Javier; COJOCARI, Oleg; MALLAT, Juha; PIIRONEN, Petri; RÄISÄNEN, Antti V. (IEEE, 2016)
    This paper presents the characterization measurements and simulations performed with ACST InGaAs low-barrier Schottky diodes for millimeter wave mixing applications. While these low-barrier Schottky diodes have been ...
  • Compact and Sensitive Millimetre Wave Detectors Based on Low Barrier Schottky Diodes on Impedance Matched Planar Antennas 
    HOEFLE, Matthias; HAEHNSEN, Katharina; OPREA, Ion; COJOCARI, Oleg; PENIRSCHKE, Andreas; JAKOBY, Rolf (Springer Nature Switzerland, 2014)
    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 ...
  • Compact Modules for Wireless Communication Systems in the E-Band (71–76 GHz) 
    MONTERO-DE-PAZ, Javier; OPREA, Ion; RYMANOV, Vitaly; BABIEL, Sebastian; GARCÍA-MUÑOZ LUIS, Enrique; LISAUSKAS, Alvydas; HOEFLE, Matthias; JIMENEZ, Álvaro; COJOCARI, Oleg; SEGOVIA-VARGAS, Daniel; PALANDÖKEN, Merih; TEKIN, Tolga; STÖHR, Andreas; CARPINTERO, Guillermo (Springer Nature Switzerland, 2013)
    The millimeter-wave spectrum above 70 GHz provides a cost-effective solution to increase the wireless communications data rates by increasing the carrier wave frequencies. We report on the development of two key components ...
  • Compact Schottky barrier diode receiver for E-Band (60–90 GHz) wireless communications 
    MONTERO-DE-PAZ, Javier; HOEFLE, Matthias; OPREA, Ion; COJOCARI, Oleg; GARCÍA-MUÑOZ, Luis Enrique; SEGOVIA-VARGAS, Daniel; JAKOBY, Rolf; CARPINTERO, Guillermo (IEEE, 2012)
    A compact E-Band receiver based on a zero bias Schottky barrier diode, folded dipole antenna and hyperhemispherical silicon lens for wireless communications is presented. Zero bias Schottky diodes were designed and ...
  • Current sign inverter guided by polarization 
    STAMOV, I. G.; SYRBU, N. N.; DOROGAN, A. V.; NEMERENCO, L. L. (Elservier, 2008)
    In this work, there are studied the photodetectors’ properties (photocurrent sign inverter) of a linear polarized radiation realized on the basis of anisotropic semiconductors. The photocurrent sign guiding is made by the ...
  • DC- and IF-noise performance optimization of GaAs Schottky diodes for THz applications 
    COJOCARI, O.; BIBER, S.; MOTTET, B.; RODRIGUEZ-GIRONES, M.; HARTNAGEL, H. L.; SCHMIDT, L.-P. (IOP Publishing, 2004)
  • European Schottky-Diode Based Receiver Technology 
    COJOCARI, O.; HOEFLE, M.; MORO-MELGAR, D.; OPREA, I.; RICKES, M. (IEEE, 2019)
    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 ...
  • Experimental validation of thermal model of MM-Wave frequency multipliers 
    OPREA, I.; COJOCARI, O.; SOBORNYTSKYY, M.; HARTNAGEL, H. L. (IEEE, 2013)
    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 ...
  • 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-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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