Results 41 to 50 of about 2,697,867 (333)
A New Class of Nondiffracting Pulses Based on Focusing Leaky Waves [PDF]
, 2017 International audienceIn this work, we propose an azimuthally-invariant periodic leaky-wave radiator for the generation of Bessel beams and X-waves by means of backward cylindrical leaky waves at millimeter wavelengths.
Walter Fuscaldo +11 more
core +1 more source
Design of a Fabry-Perot cavity antenna excited on higher-order cylindrical leaky waves [PDF]
, 2020 A Fabry-Perot cavity antenna constituted by a grounded dielectric slab covered by a partially reflecting surface in the form of a thin periodic metal screen is designed to radiate cylindrical leaky waves of orders 0, ±1, and ±2 at microwave frequencies ...
Comite D. +5 more
core +1 more source
Study of Lamb Waves for Non-Destructive Testing Behind Screens
EPJ Web of Conferences, 2018 The inspection and control of sodium-cooled fast reactors (SFR) is a major issue for the nuclear industry. Ultrasonic solutions are under study because of the opacity of liquid sodium.
Kauffmann P. +5 more
doaj +1 more source
Numerical method for solving the problem of TE-waves in the Goubau line
Известия высших учебных заведений. Поволжский регион: Физико-математические науки, 2021 Background. The problems of electromagnetic wave propagation in open metaldielectric structures are important in the study of waveguides. The purpose of the article is to numerically study a problem of the leaky and surface TE-electromagnetic wave ...
E.Yu. Smol'kin, V.Yu. Martynova
doaj +1 more source
The leaky lens: a broad-band fixed-beam leaky-wave antenna [PDF]
IEEE Transactions on Antennas and Propagation, 2005 A novel type of leaky-wave antenna is presented. Differently from previously reported leaky-wave antennas, it is characterized by a constant beam direction over a very wide range of frequencies. The radiation originates at a slot etched at the interface between air and a dense dielectric, which is shaped to form a cylinder of elliptical cross sections ...
Neto, A. +3 more
openaire +2 more sources
Scientific Reports, 2023 The knowledge of acoustic wave propagation in a borehole embedded in gas hydrate-bearing sediments is of great significance for the exploitation of gas hydrate.
Lin Liu +4 more
doaj +1 more source
Leaky waves in planar dielectric waveguide
Discrete and Continuous Models and Applied Computational Science, 2019 A new analytical and numerical solution of the electrodynamic waveguide problem for leaky modes of a planar dielectric symmetric waveguide is proposed.
Dmitriy V. Divakov +4 more
doaj +1 more source
Известия высших учебных заведений. Поволжский регион: Физико-математические науки, 2021 Background. The purpose of this work is to study numerically TE-polarized waves in a layer filled with various dielectric materials. Material and methods.
E.Yu. Smol'kin, M.O. Snegur
doaj +1 more source
Electronics, 2019 The paper presents a feasibility study on the design of a new metamaterial leaky-wave antenna (MTM-LWA) used in the construction of a 1 × 2 array which is implemented using substrate-integrated waveguide (SIW) technology for millimetre-wave beamforming ...
M. Alibakhshikenari +5 more
semanticscholar +1 more source
Advances in the research of seismic-wave leaky modes
地球与行星物理论评When seismic waves propagate in layered structures, dispersion phenomena occur. Based on the characteristics of dispersion curves, underground velocity structures can be estimated.
Caiwang Shi, Zhengbo Li, Xiaofei Chen
doaj +1 more source