Results 1 to 10 of about 4,801,166 (223)
Acoustic Splitter Waves Based on Ramified System Made of Waveguides [PDF]
E3S Web of Conferences, 2023 In this paper, we studied the propagation of acoustic waves in an acoustic ramified system. Our proposed system contains an input waveguide of length d0 and three output lines (three channels), each output line contains a semi-infinite waveguide.
El-atmani Ilham +5 more
doaj +1 more source
Comparative Study of Photonic Defective Comb-Like Structure by the Green Function and the Transfer Matrix Method [PDF]
E3S Web of Conferences, 2023 In this paper, we investigate the propagation of electromagnetic waves in periodic comblike waveguides structure made of dangling side branches (resonators) and finite waveguides.
Touiss Tarik +5 more
doaj +1 more source
Electromagnetic Filtering with High Performance by one Dimensional Defective Comb-Like Waveguides Structure Using the Transfer Matrix [PDF]
E3S Web of Conferences, 2023 In this paper, we study the propagation of electromagnetic waves in 1D photonic comb-like waveguides (CWGs) structure. This CWGs structure is constituted by a periodicity of segments of length d1 and grafted in each site by one resonator of length d2 ...
Touiss Tarik +3 more
doaj +1 more source
Scalar Induced Gravitational Waves Review [PDF]
Universe, 2021 We provide a review on the state-of-the-art of gravitational waves induced by primordial fluctuations, so-called induced gravitational waves. We present the intuitive physics behind induced gravitational waves and we revisit and unify the general ...
G. Domènech
semanticscholar +1 more source
Nature Communications, 2023 Manipulations of multiple carrier frequencies are especially important in a variety of fields like radar detection and wireless communications. In conventional radio-frequency architecture, the multi-frequency control is implemented by microwave circuits,
Si Ran Wang +5 more
doaj +1 more source
GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral [PDF]
, 2017 On August 17, 2017 at 12:41:04 UTC the Advanced LIGO and Advanced Virgo gravitational-wave detectors made their first observation of a binary neutron star inspiral.
The Ligo Scientific Collaboration +1 more
semanticscholar +1 more source
Design of Low-Cost Full W-Band 8th Harmonic Mixers for Frequency Extension of Spectrum Analyzer
IET Circuits, Devices and Systems, 2023 High-order harmonic mixer is popular for frequency extension of spectrum analyzer (SA) from microwave to millimeter-wave or even terahertz band. The manufactures of SA usually offer expensive harmonic mixers where frequency extension is needed.
Jian Guo +5 more
doaj +1 more source
Optics Letters, 2016 We show the existence of a family of waves that share a common interesting property affecting the way they propagate and focus. These waves are a superposition of twin waves, which are conjugate to each other under inversion of the propagation direction.
Papazoglou, Dimitris G. +2 more
openaire +3 more sources
Design of a 2-Bit Reconfigurable UWB Planar Antenna Array for Beam Scanning Application
IEEE Open Journal of Antennas and Propagation, 2023 Reconfigurable antennas have been widely employed for beam scanning in recent years. However, such antennas are usually limited by narrow bandwidth. To overcome this challenge, we present a linearly polarized 2-bit ultra-wideband (UWB) antenna array in C-
Zuqi Fang +6 more
doaj +1 more source
Observation of Gravitational Waves from a Binary Black Hole Merger [PDF]
, 2016 On September 14, 2015 at 09:50:45 UTC the two detectors of the Laser Interferometer Gravitational-Wave Observatory simultaneously observed a transient gravitational-wave signal.
The Ligo Scientific Collaboration +2 more
semanticscholar +1 more source