Results 11 to 20 of about 178,553 (293)

Spatial Characteristics of Distortion Radiated from Antenna Arrays with Transceiver Nonlinearities

open access: yesIEEE Transactions on Wireless Communications, 2018
The distortion from massive MIMO (multiple-input--multiple-output) base stations with nonlinear amplifiers is studied and its radiation pattern is derived. The distortion is analyzed both in-band and out-of-band.
Eriksson, Thomas   +3 more
core   +3 more sources

Measurement of nonlinear and Doppler distortion in Distributed Mode Loudspeakers [PDF]

open access: yesInternational Journal of Electronics and Telecommunications
Distributed Mode Loudspeakers (DMLs), as other electroacoustic transducers with electrodynamic excitation, are susceptible to the occurrence of nonlinear distortion. The literature on nonlinear distortion in DMLs is scarce.
Karol Czesak, Piotr Kleczkowski
doaj   +1 more source

Hardware Design of a High Dynamic Range Radio Frequency (RF) Harmonic Measurement System

open access: yesInstruments, 2018
Radio frequency (RF) circuit elements that are traditionally considered to be linear frequently exhibit nonlinear properties that affect the intended operation of many other RF systems. Devices such as RF connectors, antennas, attenuators, resistors, and
Ram M. Narayanan   +4 more
doaj   +1 more source

Minima in cubic distortion-product otoacoustic emission input/output functions due to distributed primary sources [PDF]

open access: yesJASA Express Letters
Input/output (I/O) functions of distortion-product otoacoustic emissions (DPOAEs) may contain sudden amplitude minima (notches) although they are measured in animals with a negligible reflection source.
Václav Vencovský, Aleš Vetešník
doaj   +1 more source

Determination of Inactive Powers in a Single-Phase AC Network

open access: yesEnergies, 2021
Based on the development of the theory of reactive power and distortion power, starting with the works of Fryze and Budeanu, it has been found that the contradictions in the definition of the components of inactive powers are caused by errors in the ...
Nickolay I. Shchurov   +6 more
doaj   +1 more source

Neural-Based Nonlinear Device Models for Intermodulation Analysis [PDF]

open access: yes, 2003
A new procedure to learn a nonlinear model together with its derivative parameters using a composite neural network is presented.So far neural networks have never been used to extract large-signal device model accounting for distortion parameters ...
Colantonio, P.   +4 more
core   +1 more source

Nonlinearities of GaAlAs lasers - Harmonic distortion [PDF]

open access: yesIEEE Journal of Quantum Electronics, 1980
Narrow stripe lasers ( 2-6 \mu m) and transverse junction lasers exhibit excellent linearity. The dependence of relative second-and third-harmonic distortion is investigated as a function of modulation frequency and modulation current. Relative second- and third-harmonic distortion of -50 and -70 dB is observed for an optical signal of 4 mW p-p ( f_{m}
Stubkjær, Kristian, Danielsen, Magnus
openaire   +2 more sources

Modeling OpAmp-induced harmonic distortion for switched-capacitor ΣΔ modulator design [PDF]

open access: yes, 1994
This communication reports a new modeling of opamp-induced harmonic distortion in SC ΣΔ modulators, which is aimed to optimum design of this kind of circuit for high-performance applications.
Huertas Díaz, José Luis   +3 more
core   +1 more source

Nonlinear distortion compensation algorithm aided by channel estimation of memoryless power amplifier for OTFS receiver

open access: yesTongxin xuebao, 2022
A compensation algorithm for OTFS receiver was proposed to solve the problem of transmission signal distortion caused by the nonlinear characteristics of power amplifier (PA) in the orthogonal time frequency space (OTFS) system.The channel state ...
Zhanjun JIANG   +3 more
doaj   +2 more sources

A crosscorrelation predistorter using memory polynomials [PDF]

open access: yes, 2004
Amplification of signals with fluctuating envelopes inevitably leads to distortion because of nonlinear behavior of the power amplifier (PA). Digital predistortion can counteract these nonlinear effects.
Kokkeler, Andre B.J.
core   +8 more sources

Home - About - Disclaimer - Privacy