Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Katarzyna Opalska"'
Autor:
Katarzyna Opalska
Publikováno v:
Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2016.
The paper presents the investigations targeted at broadening the bandwidth of the high speed photodector signal path. Photodetector output signal is formed in the signal path composed of the photodiode with appropriate cooling circuitry, short segmen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::823ba1c453d5899f06baa047f760370a
https://doi.org/10.1117/12.2249194
https://doi.org/10.1117/12.2249194
Publikováno v:
2016 21st International Conference on Microwave, Radar and Wireless Communications (MIKON).
We present a simple small-signal parameterized equivalent circuit for HgCdTe photodetectors operating at high temperatures in the middle and long wavelength of the infrared spectrum. This circuit is capable of accurate modeling the impedance of these
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::491bb6e1d96a449b9989b7b71535fb89
https://doi.org/10.1109/mikon.2016.7492080
https://doi.org/10.1109/mikon.2016.7492080
Autor:
Katarzyna Opalska
Publikováno v:
Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2015.
The paper presents the lumped model of high speed amplifier useful for frequency and time domain (also large signal) simulation. Model is constructed on the basis of two-domain device measurements, namely small signal frequency parameters and time re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::063c7b9cd885f5f53115575ab9a74e24
https://doi.org/10.1117/12.2205603
https://doi.org/10.1117/12.2205603
Autor:
Katarzyna Opalska
Publikováno v:
ECCTD
This paper presents a three step procedure for creating a small signal parameterized circuit model of a two-port RF module characterized in frequency domain. First, Vector Fitting is used to find rational approximation of Y matrix entries. Second, RL
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cf9d39b15935f35c0c3236aac53a9142
https://doi.org/10.1109/ecctd.2015.7300088
https://doi.org/10.1109/ecctd.2015.7300088
Autor:
Katarzyna Opalska
Publikováno v:
SPIE Proceedings.
The paper presents the lumped model of RF amplifier for the generic SPICE circuit simulator. Model is constructed on the basis of measured s-parameter data set of the amplifier. Data – transformed to admittance (y) domain - is approximated by ratio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::83ffbdd3bb20857467b869869a4abf78
https://doi.org/10.1117/12.2075021
https://doi.org/10.1117/12.2075021
Autor:
Leszek J. Opalski, Katarzyna Opalska
Publikováno v:
Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2013.
The paper attempts to summarize author’s investigation of parallel computation capability of MATLAB environment in solving large ordinary differential equations (ODEs). Two MATLAB versions were tested and two parallelization techniques: one used mu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e72faee4b3904d49b5633cc8fab5f3c5
https://doi.org/10.1117/12.2035355
https://doi.org/10.1117/12.2035355
Autor:
Katarzyna Opalska
Publikováno v:
Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2013.
The paper presents the results of the simulation of the brusselator performed in the MATLAB environment. The brusselator is a kind of a chemical oscillating system (with periodically changing concentrations of reactants and the possibility of self-or
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9fa6e83b30c4aa1d60c7684221af57a6
https://doi.org/10.1117/12.2035279
https://doi.org/10.1117/12.2035279
Autor:
Katarzyna Opalska
Publikováno v:
SPIE Proceedings.
The paper presents a model of transmission line in a generic circuit simulator (ngspice) enhanced by skin effect representation. The proposed model is available in a form of a subcircuit, parameterized by so-called corner frequency - parameter depend
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ab1302371b4f87104254f4ba1d51607e
https://doi.org/10.1117/12.982009
https://doi.org/10.1117/12.982009
Autor:
Katarzyna Opalska
Publikováno v:
Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2011.
The paper presents black-box type, behavioral model of pulse reflection from the open end of a transmission line. Model allows for setting measurements limits of TDR-based systems dedicated for DSL line diagnosis. Two main factors responsible for sha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8ebe497203d4df53fe6f2fe3286e3e90
https://doi.org/10.1117/12.905010
https://doi.org/10.1117/12.905010
Autor:
Katarzyna Opalska, Aleksander Burd
Publikováno v:
SPIE Proceedings.
The paper illustrates an essential influence of skin effect on results of time-domain reflectometry technique applied to diagnosis of DSL transmission line. Skin effect (frequency-dependent ohmic losses dependent on geometry and material of the wire)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0ac25c402ad0790e802777265d84c185
https://doi.org/10.1117/12.817963
https://doi.org/10.1117/12.817963