Results 261 to 270 of about 18,665 (298)
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Journal of Fluid Mechanics, 1983
The effect of depth variations near the mouth of harbour-like geometries is investigated. It is found that some modes of oscillation that, for uniform depth, would decay rapidly can be trapped very effectively when moderate increases in depth occur at the seaward end of the harbour.
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The effect of depth variations near the mouth of harbour-like geometries is investigated. It is found that some modes of oscillation that, for uniform depth, would decay rapidly can be trapped very effectively when moderate increases in depth occur at the seaward end of the harbour.
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Sonic crystal with open resonant cavities
Physical Review E, 2007An improved scattering matrix method is developed to study a two-dimensional air-rigid sonic crystal with open resonant cavity, and the band structure and transmission properties are investigated. Numerical results show that both the band structure and the transmission coefficient are sensitive to the shape of the resonant cavity.
Zhilin, Hou +4 more
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A beat wave experiment in an open resonator
Physica Scripta, 1990In the beat wave experiment, scaled at microwave, an open resonator, matched to microwave sources, is used to achieve a high field intensity with reasonable input electromagnetic power. Scaling to microwave could be an important step in building up an experiment capable to point out easily and at minor cost the physical problems of the plasma beat wave
G. Di Massa +3 more
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The resonance frequencies of an open slotted-waveguide resonator
1988High-Q open slotted-waveguide resonators, widely used in microwave techniques, have a dense spectrum of natural oscillations [1, 2]. Open slotted-waveguide resonators based on cutoff waveguides are free from this drawback [3]. In these resonators, sections of waveguides with a wide band of single-mode operation, in particular, H-waveguides, are used as
Repa, Fedir M. +2 more
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Soviet Journal of Quantum Electronics, 1975
A theoretical analysis is made of high-Q oscillations in several open plane-mirror resonators. Characteristic equations for the eigenfrequencies are deduced from impedance boundary conditions for open resonators. A qualitative analytic theory is developed for annular open resonators.
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A theoretical analysis is made of high-Q oscillations in several open plane-mirror resonators. Characteristic equations for the eigenfrequencies are deduced from impedance boundary conditions for open resonators. A qualitative analytic theory is developed for annular open resonators.
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Resonance characteristics of capacitively loaded CPW open‐loop resonators
Microwave and Optical Technology Letters, 2003AbstractCapacitively loaded coplanar waveguide (CPW) open‐loop resonators (OLRs) are proposed for maximum miniaturization in uniplanar microwave applications. It is shown that these resonators can be used to achieve a slow‐wave effect without occupying extra surface area.
Gorur, A, Akgun, O
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Low-Loss Open Resonators and Diffraction Formulas
Applied Optics, 1972Si descrive una procedura basata su un "nucleo iterato n-volte" per valutare numericamente modi e perdite di risonatori aperti con perdite dell'odine di un millesimo o inferiori. Si è applicata la procedura a un risonatore flat-roof con numero di Fresnel N=12.25 e trovato un grande vantaggio nel tempo di elaborazione per esempio con un nucleo iterato ...
A. Consortini, F. Pasqualetti
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Scattering on a resonator with a small opening
Journal of Soviet Mathematics, 1984Translation from Zap. Nauchn. Semin. Leningr. Otd. Mat. Inst. Steklova 126, 159-169 (Russian) (1983; Zbl 0512.47009).
Pavlov, B. S., Faddeev, M. D.
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Open resonators with apertures in reflectors
Soviet Journal of Quantum Electronics, 1978A theoretical analysis is made of resonators with two mirrors having apertures of different dimensions and shape. The problem is reduced to integral equations of quasioptics. The solution of these equations, including two-dimensional systems (when the shape of the aperture differs from the reflector shape), is obtained applying the perturbation theory.
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