Results 21 to 30 of about 2,253,922 (294)

Plane electromagnetic wave propagation of pulsed periodic field in conductive half-space [PDF]

open access: yes, 2021
Nowadays, application of pulsed periodic fields in various technological devices is of interest, in particular for the influencing on a conductive media.
Viktor, Timofeev   +2 more
core   +1 more source

Radio-Wave Propagation and Electromagnetic Surface Waves [PDF]

open access: yesProceedings of the National Academy of Sciences, 1947
A Discrepancy and Its Resolution. - The problem of the propagation of radio-waves along the surface of the (plane) earth was first treated in a celebrated paper by A. Sommerfeld (1909).(1) Let the (r, φ)-plane of a cylindric system of coordinates coincide with the plane of the earth surface and let the z-axis point vertically upward.
openaire   +3 more sources

Dual-Mode Microstrip Patch Bandpass Filters With Generalized Frequency Responses

open access: yesIEEE Access, 2019
A basic two-pole bandpass filter based on the dual-mode square patch resonator is presented and analyzed to realize generalized frequency responses in terms of two finite transmission zeros (FTZs).
Qing Liu   +4 more
doaj   +1 more source

Transient electromagnetic wave propagation in laterally discontinuous, dispersive media [PDF]

open access: yes, 2001
This paper concerns propagation of transient electromagnetic waves in laterally discontinuous dispersive media. The approach, used here, employs a component decomposition of all fields.
Igor Egorov   +7 more
core   +1 more source

Transient electromagnetic wave propagation in transverse periodic media

open access: yes, 1996
In this paper, a time-domain technique is used to analyze the wave propagation of electromagnetic pulses in media that are periodic in one spatial direction, perpendicular to the direction of propagation.
Lund University.   +2 more
core   +2 more sources

Complex analysis of pre-seismic geoacoustic and electromagnetic emission signals [PDF]

open access: yesE3S Web of Conferences, 2019
The article describes the results of complex analysis of pre-seismic signals of electromagnetic and geoacoustic radiation. We analyzed the frequency content of single sferics and geoacoustic impulses recorded before the Zhupanov earthquake that occurred ...
Lukovenkova Olga   +3 more
doaj   +1 more source

Hereditary Mathematical Model of the Dynamics of Radon Accumulation in the Accumulation Chamber

open access: yesMathematics, 2023
Mathematical modeling is used to study the hereditary mechanism of the accumulation of radioactive radon gas in a chamber with gas-discharge counters at several observation points in Kamchatka.
Dmitrii Tverdyi   +2 more
doaj   +1 more source

Tidal Structures in the Mesosphere and Lower Thermosphere and Their Solar Cycle Variations

open access: yesAtmosphere, 2022
We studied the correlations between the migrating and non-migrating tides and solar cycle in the mesosphere and lower thermosphere (MLT) regions between 60° S and 60° N, which are in LAT-LON Earth coordinates, by analyzing the simulation datasets from ...
Ruidi Sun   +3 more
doaj   +1 more source

Longitudinal differences in the statistical characteristics of ionospheric spread-F occurrences at midlatitude in Eastern Asia

open access: yesEarth, Planets and Space, 2019
Spread-F is known as the electron density inhomogeneous structures in F layer of ionosphere and can usually be classified as frequency spread-F (FSF) and range spread-F (RSF).
Ning Wang   +6 more
doaj   +1 more source

Research on small-scale structures of ice particle density and electron density in the mesopause region [PDF]

open access: yesAnnales Geophysicae, 2019
The formation of ice particle density irregularities with a meter scale in the mesopause region is explored in this paper by developing a growth and motion model of ice particles based on the motion equation of a variable mass object.
R. Tian   +12 more
doaj   +1 more source

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