Temat: time-domain - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: An introduction to envelope constrained filter design
Autorzy:: Cantoni, A.
Vo, B.N.
Teo, K.L.
Powiązania:: https://bibliotekanauki.pl/articles/309513.pdf
Data publikacji:: 2001
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: filter
optimisation
constraints
envelopes
time domain
noise
robustness
Opis:: Envelope constrained filter design is concerned with the time domain synthesis of a filter whose response to a specified input signal stays within prescribed upper and lowe bounds and in addition has minimal noise enhancement. In many practical applications, a "soft" approach, such as least mean square, is not the most suitable and it becomes necessary to use "hard" constraints such as the ones considered in the paper. We present an overview of key ideas related to robust continuous time envelope constrained filter design.
Źródło:: Journal of Telecommunications and Information Technology; 2001, 3; 3-14
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: The 100 W class A power amplifier for L-band T/R module
Autorzy:: Wojtasiak, W.
Gryglewski, D.
Sędek, E.
Powiązania:: https://bibliotekanauki.pl/articles/308787.pdf
Data publikacji:: 2002
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: modelling
MESFETs
finite difference time domain method
power transistors
microwave transistors
Opis:: In the paper a balanced high power amplifier with class A silicon bipolar transistors for L-band T/R module is described. The amplifier was designed for maximum power and minimum transmitance distortions. The obtained parameters of the amplifier are as follow: output power at 1 dB compression P(1dB)>49 dBm, linear gain IS21I>10 dB, and transmitance deviations during the RF pulse: phase delta arg(S2)<0.9° and deltaP(out)<0.2 dB.
Źródło:: Journal of Telecommunications and Information Technology; 2002, 1; 11-13
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Extrapolation of Electromagnetic Response from Linear Antennas in Time Domain without Late-Time Instabilities in Numerical Solution of EFI Equation
Autorzy:: Witenberg, Anna
Powiązania:: https://bibliotekanauki.pl/articles/308882.pdf
Data publikacji:: 2020
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: electric field integral equation (EFIE)
linear antenna
solution of time domain EFIE
late time instabilities
Opis:: The paper presents a new hybrid method relied upon to solve integral equations of the electric ﬁeld in time domain and to model linear antennas with pulse excitation. The method consists in a mixed, numerical-analytical description of the process that helps maintain the stability of calculations during the late time phase. As described in the analytical part, the modiﬁed spherical Bessel function of the ﬁrst kind allows for extrapolation with a high degree of accuracy and loworder expressions. The modiﬁed spherical Bessel functions of the ﬁrst kind are of the oscillating character, and their combination with the exponential factor makes them convenient for extrapolation of the answer of the antenna with pulse excitation. New functions are introduced to computational practice.
Źródło:: Journal of Telecommunications and Information Technology; 2020, 2; 45-50
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Analysis and Modeling of Domain Registration Process
Autorzy:: Arabas, P.
Jaskóła, P.
Kamola, M.
Karpowicz, M.
Powiązania:: https://bibliotekanauki.pl/articles/309217.pdf
Data publikacji:: 2012
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: domain market
domain registration
forecasting
time series modeling
Opis:: The paper presents analysis of the domain name reservation process for the polish .pl domain. Two models of various time scale are constructed and finally combined to build long range high resolution model. The results of prediction are verified using real data.
Źródło:: Journal of Telecommunications and Information Technology; 2012, 2; 63-73
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

Artykuł

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