Nature of microstructure in pulsar radio emission [PDF]
, 2000 We present a model for microstructure in pulsar radio emission. We propose that micropulses result from the alteration of the radio wave generation region by nearly transverse drift waves propagating across the pulsar magnetic field and encircling the ...
Khechinashvili, David +3 more
core +2 more sources
The End of the Rainbow: What Can We Say About the Extragalactic Sub-Megahertz Radio Sky? [PDF]
, 2010 The Galactic disc is opaque to radio waves from extragalactic sources with frequencies nu less than ~3 MHz. However, radio waves with kHz, Hz, and even lower frequencies may propagate through the intergalactic medium (IGM).
Abbott +142 more
core +1 more source
Modified Luneburg Lens Based on Metamaterials
International Journal of Antennas and Propagation, 2015 We present the design, fabrication, and experimental characterization of a modified two-dimensional Luneburg lens based on bulk metamaterials. The lens is composed by a number of concentric layers.
Haibing Chen +8 more
doaj +1 more source
The role of natural E-region plasma turbulence in the enhanced absorption of HF radio waves in the auroral ionosphere:Implications for RF heating of the auroral electrojet [PDF]
Annales Geophysicae, 1994 Physical processes which affect the absorption of radio waves passing through the auroral E-region when Farley-Buneman irregularities are present are examined.
T. R. Robinson
doaj +1 more source
Time-frequency analysis-based deep interference classification for frequency hopping system
EURASIP Journal on Advances in Signal Processing, 2022 It is known that interference classification plays an important role in protecting the authorized communication system and avoiding its performance degradation in the hostile environment.
Changzhi Xu +6 more
doaj +1 more source
Two dimensional time evolution of beam-plasma instability in the presence of binary collisions [PDF]
, 2016 Energetic electrons produced during solar flares are known to be responsible for generating solar type III radio bursts. The radio emission is a byproduct of Langmuir wave generation via beam-plasma interaction and nonlinear wave-wave and wave-particle ...
Kontar, Eduard +3 more
core +2 more sources
A tunable metamaterial absorber using varactor diodes
New Journal of Physics, 2013 We present the design, analysis and measurements of a polarization-insensitive tunable metamaterial absorber with varactor diodes embedded between metamaterial units.
Jie Zhao +5 more
doaj +1 more source
Propagation of Electromagnetic Wave into an Illuminated Polysilicon PV Cell
International Journal of Antennas and Propagation, 2020 The increasing cohabitation between telecommunication antennas generating electromagnetic waves and solar panels poses the problem of interaction between these radio waves and solar cells. In order to study the effect of radio waves on the performance of
Vinci de Dieu Bokoyo Barandja +5 more
doaj +1 more source
Experimental simulation of satellite observations of 100 kHz radio waves from relativistic electron beams above thunderclouds [PDF]
Atmospheric Chemistry and Physics, 2011 Relativistic electron beams above thunderclouds emit 100 kHz radio waves which illuminate the Earth's atmosphere and near-Earth space. This contribution aims to clarify the physical processes which are relevant for the spatial spreading of the radio ...
M. Füllekrug, C. Hanuise, M. Parrot
doaj +1 more source
Air Shower Measurements with the LOPES Radio Antenna Array [PDF]
, 2008 LOPES is set up at the location of the KASCADE-Grande extensive air shower experiment in Karlsruhe, Germany and aims to measure and investigate radio pulses from Extensive Air Showers.
A. Chiavassa +89 more
core +2 more sources