Results 1 to 10 of about 32,796 (196)

Leaky Wave Generation Through a Phased-Patch Array [PDF]

open access: yesSensors
For this article, we approximated the field of a leaky-wave antenna (LWA) with the field produced by a uniform linear array (ULA). This article aims to provide an initial framework for applications where the generation of an inhomogeneous wave is wished,
Alessandro Calcaterra   +3 more
doaj   +2 more sources

Experimental and Theoretical Analysis of Rayleigh and Leaky-Sezawa Waves Propagating in ZnO/Fused Silica Substrates [PDF]

open access: yesMicromachines
Piezoelectric c-axis oriented zinc oxide (ZnO) thin films, from 1.8 up to 6.6 µm thick, have been grown by the radio frequency magnetron sputtering technique onto fused silica substrates.
Cinzia Caliendo   +4 more
doaj   +2 more sources

Surface leaky waves and their measurement [PDF]

open access: yes1998 28th European Microwave Conference, 1998
A new approach to experimental identification of surface leaky waves on printed-circuit lines is presented in this paper. Active radiometry is used for field probing even in the near field zone. The measurement is adjusted into the X band.
Macháč, Jan   +4 more
core   +3 more sources

Contactless estimation of soil moisture using leaky Rayleigh waves and a fully convolutional network

open access: yesVadose Zone Journal, 2023
Soil moisture is a key factor that influences various aspects of ecosystem functioning. Measuring soil moisture without installing any objects in the soil is desirable because it allows for accurate characterizations of soil moisture while minimizing ...
Seoungmin Lee, Dong Kook Woo, Hajin Choi
doaj   +1 more source

Optimized Leaky-Wave Antenna for Hyperthermia in Biological Tissue Theoretical Model

open access: yesSensors, 2023
In this paper, we exploit the enhanced penetration reachable through inhomogeneous waves to induce hyperthermia in biological tissues. We will present a leaky-wave antenna inspired by the Menzel antenna which has been shortened through opportune design ...
Alessandro Calcaterra   +4 more
doaj   +1 more source

Leaky modes of a left-handed slab [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2008
Using complex plane analysis we show that left-handed slab may support either leaky slab waves, which are backward because of negative refraction, or leaky surface waves, which are backward or forward depending on the propagation direction of the surface
Moreau A., Felbacq D.
doaj   +1 more source

A Novel and Non-Invasive Approach to Evaluating Soil Moisture without Soil Disturbances: Contactless Ultrasonic System

open access: yesSensors, 2022
Soil moisture has been considered a key variable in governing the terrestrial ecosystem. However, it is challenging to preserve indigenous soil characteristics using conventional soil moisture monitoring methods that require maximum soil contacts.
Dong Kook Woo   +3 more
doaj   +1 more source

A Review of Reconfigurable Leaky-Wave Antennas [PDF]

open access: yesIEEE Access, 2021
A comprehensive survey of the reconfigurable leaky-wave antennas (LWAs) is made in this paper. Beam-steering and unique radiating features of LWA are highlighted particularly. Therefore, the radiation mechanism of different types of LWA, including uniform, quasi-uniform, periodic, and metamaterial LWAs are discussed in detail.
Nima Javanbakht   +3 more
openaire   +2 more sources

Detection of coatings within liquid-filled tubes and containers by mode conversion of leaky Lamb waves [PDF]

open access: yesJournal of Sensors and Sensor Systems, 2013
In this paper, a new acoustic sensor principle for coating detection within liquid-filled tubes and containers based on mode conversion of leaky Lamb waves is introduced.
M. Schmitt   +6 more
doaj   +1 more source

Modelling Leaky Waves in Planar Dielectric Waveguides [PDF]

open access: yesEPJ Web of Conferences, 2020
Experimentally observed leaky modes of a dielectric waveguide are characterised by a weak tunnelling of the light through the waveguide and its long-time propagation along the waveguide.
Ayryan Edik   +4 more
doaj   +1 more source

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