Results 41 to 50 of about 1,605,535 (250)

Chebyshev filter and Butterworth filters: Comparison and applications in different cases

Applied and Computational Engineering
This study focuses on the filter selection problem in signal processing and wireless communication applications. Specifically, addressed two different filter selection problems: the Chebyshev filter and the Butterworth filter.
Zhiqi Li
semanticscholar   +1 more source

Introducing PHAEDRA: a new spectral code for simulations of relativistic magnetospheres [PDF]

, 2012
We describe a new scheme for evolving the equations of force-free electrodynamics, the vanishing-inertia limit of magnetohydrodynamics. This pseudospectral code uses global orthogonal basis function expansions to take accurate spatial derivatives ...
Abarbanel, Andrei M. Beloborodov, Asano, Beloborodov, Beloborodov, Blandford, Blandford, Blandford, Bonazzola, Boyd, Boyd, Boyd, Boyd, Brandenburg, Bürgel, Cai, Carpenter, Chan, Chan, Cho, Contopoulos, Contopoulos, Dimmelmeier, Don, Don, Don, Fornberg, Frigo, Gammie, Gelb, Godon, Godon, Goldreich, Goodwin, Gottlieb, Gottlieb, Gottlieb, Gourgoulhon, Grandclément, Hou, If, Kalapotharakos, Kalapotharakos, Kidder, Komissarov, Komissarov, Komissarov, Komissarov, Komissarov, Kosloff, Kyle Parfrey, Lam Hui, Li, Liu, Lyutikov, Lyutikov, Ma, Ma, MacDonald, Majda, McKinney, McKinney, Mead, Merilees, Michel, Mészáros, Orszag, Orszag, Palenzuela, Pelz, Punsly, Rudin, Sarra, Sarra, Shu, Spitkovsky, Sun, Tadmor, Tadmor, Tadmor, Tadmor, Tanner, Thompson, Thompson, Timokhin, Tóth, Uchida, Vandeven, Yang, Yu, Zenitani, Zenitani   +91 more
core   +1 more source

Chained-Function Filter Synthesis Based on the Modified Jacobi Polynomials [PDF]

Radioengineering, 2018
A new class of filter functions with pass-band ripple which derives its origin from a method of determining the chained function lowpass filters described by Guglielmi and Connor is introduced.
G. Perenic, N. Stamenkovic, N. Stojanovic, N. Denic   +3 more
doaj  

Strong Proton‐Phonon Coupling Drives Fast Ion Transport in Perovskites

Advanced Science, EarlyView.
Experimental and computational phonon analysis of ABO3‐type proton conductor BaSnO3 shows that substitution on the B‐site with yttrium forms an imaginary phonon mode which is instrumental for the function as proton conductor. This overcompensates the adverse proton trapping effect of the yttrium.
Alexey Rulev, Nobumoto Nagasawa, Hongxin Wang, Vladimir Pomjakushin, Martin Kunz, Yoshitaka Yoda, Stephen P. Cramer, Qianli Chen, Artur Braun   +8 more
wiley   +1 more source

Coefficients Calculation in Pascal Approximation for Passive Filter Design

Computation, 2018
The recently modified Pascal function is further exploited in this paper in the design of passive analog filters. The Pascal approximation has non-equiripple magnitude, in contrast of the most well-known approximations, such as the Chebyshev ...
George B. Kasapoglu, Evangelia A. Karagianni, Michael E. Fafalios, Ioannis A. Koukos   +3 more
doaj   +1 more source

Digital filter for device of determining coordinates of radio signal source in satellite telecommunications systems

Космические аппараты и технологии, 2020
Work is devoted research of signal power dependence that will be used in the measurements and noise components of the signal from the digital filter type, filter parameters for various signal-to-noise ratios.
V. V. Sukhotin, A. S. Tikhtenko, A. V. Zhgun, V. A. Sidorin   +3 more
doaj   +1 more source

Detection of Edges in Spectral Data II. Nonlinear Enhancement [PDF]

, 2000
We discuss a general framework for recovering edges in piecewise smooth functions with finitely many jump discontinuities, where $[f](x):=f(x+)-f(x-) \neq 0$. Our approach is based on two main aspects--localization using appropriate concentration kernels
Gelb, Anne, Tadmor, Eitan
core   +2 more sources

Strain analysis of black‐to‐yellow phase transitions in CsPbI3

InfoMat, EarlyView.
All‐inorganic metal‐halide perovskite CsPbI3 shows strong potential for photovoltaic applications. Here strain analysis is used to probe the mechanisms behind the instability of its photoactive black phase. The results indicate that a relatively large positive (e1–e2) strain is the primary driver of the black‐to‐yellow phase transition.
Bangwei Jin, Dexin Yang, Ruihao Gong, Yoshiki Sugai, Dongchen Lan, Julian A. Steele, Xuefeng Zhang   +6 more
wiley   +1 more source

On the β$$ \beta $$‐effect in the baroclinic instability of a continuously stratified atmosphere

Quarterly Journal of the Royal Meteorological Society, EarlyView.
We solve the quasi‐geostrophic equation numerically to analyze baroclinic instability in a continuously stratified atmosphere. On the β$$ \beta $$‐plane, deviations from classical models alter instability growth rates and modal structures, leading to the emergence of unstable lobes and a stable region at very large wavelengths.
Juan Vázquez Portillo, Antonio Segalini
wiley   +1 more source

Coaxial Low-Pass Filter Design and Manufacture

IEEE Access, 2023
In this study, a low-pass filter with coaxial transmission lines is designed and produced. The objective for designing a coaxial low-pass filter was to utilize both low-loss transmission and high breakdown voltage capability for high power microwave ...
E. Yilmaz, M. Ucuncu
doaj   +1 more source