Results 141 to 150 of about 32,796 (196)
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Proceedings of the IEEE, 2012
This paper gives a basic review and a summary of recent developments for leaky-wave antennas (LWAs). An LWA uses a guiding structure that supports wave propagation along the length of the structure, with the wave radiating or “leaking” continuously along the structure. Such antennas may be uniform, quasi-uniform, or periodic.
David R. Jackson +2 more
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This paper gives a basic review and a summary of recent developments for leaky-wave antennas (LWAs). An LWA uses a guiding structure that supports wave propagation along the length of the structure, with the wave radiating or “leaking” continuously along the structure. Such antennas may be uniform, quasi-uniform, or periodic.
David R. Jackson +2 more
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Review of Recent Advances in the Leaky-Wave Analysis of 2-D Leaky-Wave Antennas
2020 14th European Conference on Antennas and Propagation (EuCAP), 2020Recent developments are reviewed in the area of leaky-wave analysis of two-dimensional (2-D) leaky-wave antennas. Recent results are reviewed in three areas: (1) new beamwidth formulas for 2-D leaky-wave antennas, (2) leakywave analysis of wideband Fabry-Perot cavity antennas, and (3) leaky-wave analysis of 2-D periodic leaky-wave antennas (those that ...
Jackson D. R. +7 more
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Propagation characteristics of leaky waves on a 2D periodic leaky-wave antenna
2017 IEEE MTT-S International Microwave Symposium (IMS), 2017A two-dimensional (2D) periodic leaky-wave antenna consisting of a periodic distribution of rectangular patches on a grounded dielectric substrate, excited by a narrow slot in the ground plane, is studied here. The TM0 surface wave that is normally supported by a grounded dielectric substrate is perturbed by the presence of the periodic patches to ...
Sohini Sengupta +2 more
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2016
Millimeter waveguides, such as coplanar lines, microstrip lines and dielectric guides, are open structures where energy leakage is bound to occur. This leakage can occur, for example, when there are discontinuities in the guiding structure, or perhaps when the guide is excited in an inappropriate mode.
GALLI, Alessandro +2 more
+5 more sources
Millimeter waveguides, such as coplanar lines, microstrip lines and dielectric guides, are open structures where energy leakage is bound to occur. This leakage can occur, for example, when there are discontinuities in the guiding structure, or perhaps when the guide is excited in an inappropriate mode.
GALLI, Alessandro +2 more
+5 more sources
International Journal of Electronics, 1978
A new type of leaky wave called a alow leaky wave is reported. The slow leaky waves have a phase velocity less than the velocity of light but radiate in a direction away from end-fire.
RAMESH GARG, K. C. GUPTA
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A new type of leaky wave called a alow leaky wave is reported. The slow leaky waves have a phase velocity less than the velocity of light but radiate in a direction away from end-fire.
RAMESH GARG, K. C. GUPTA
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2009 IEEE Antennas and Propagation Society International Symposium, 2009
In this paper, a trough leaky-wave antenna is considered that was inspired by the half-width microstrip leaky-wave. The TLW antenna is naturally suitable for flush-mount installation in a metallic body such as an automobile. The radiation characteristics will be investigated in more detail such as the design of the matching cavities and their effect on
Carlos A. Jaramillo-Henao +2 more
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In this paper, a trough leaky-wave antenna is considered that was inspired by the half-width microstrip leaky-wave. The TLW antenna is naturally suitable for flush-mount installation in a metallic body such as an automobile. The radiation characteristics will be investigated in more detail such as the design of the matching cavities and their effect on
Carlos A. Jaramillo-Henao +2 more
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Journal of Applied Physics, 1993
In an elastically isotropic semiinfinite medium having a free surface with a weak harmonic corrugation, the interaction between the Rayleigh wave guided along the free surface and the shear vertical and pressure bulk elastic waves propagating in the substrate is investigated for the propagation directions lying in a plane perpendicular to the average ...
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In an elastically isotropic semiinfinite medium having a free surface with a weak harmonic corrugation, the interaction between the Rayleigh wave guided along the free surface and the shear vertical and pressure bulk elastic waves propagating in the substrate is investigated for the propagation directions lying in a plane perpendicular to the average ...
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Stepped leaky-wave antennas for microwave and millimeter wave applications
Annales Des Télécommunications, 1997This work presents the complete general features of a recently proposed class of leaky-wave antennas, derived from stepped rectangular-section waveguides with radiating slits. Based on very favorable topological features, straightforward but extremely effective design procedures are shown to be possible for achieving sophisticated radiation properties.
DI NALLO C. +4 more
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Localization of leaky guided waves
Physica A: Statistical Mechanics and its Applications, 1989A general transfer matrix approach for the propagation of guided waves in presence of inhomogeneities or “scatterers” is presented. It particularly addresses the problem of the coupling with radiation modes leading to a leakage of the guided wave to the surrounding bulk medium at each scattering.
Didier Sornette, Louis Macon, Jean Coste
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