Results 251 to 260 of about 18,665 (298)
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Applied Optics, 1973
A theoretical investigation of a sloped-rim open resonator is described, which neglects the diffraction effects due to the finiteness of the rim size. A comparison is made with the results obtained by numerically solving the integral equation associated with the open resonator. The agreement is good, so the theory developed here can be used for a first
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A theoretical investigation of a sloped-rim open resonator is described, which neglects the diffraction effects due to the finiteness of the rim size. A comparison is made with the results obtained by numerically solving the integral equation associated with the open resonator. The agreement is good, so the theory developed here can be used for a first
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International Journal of Infrared and Millimeter Waves, 1982
A multiple reflection approach is employed to examine the properties of the lowQ open resonators commonly used in high power gyrotrons. The resonant frequency, diffractionQ, and RF field profile are derived in closed forms in the lowQ limit. Formation of the eigenmode in the resonator is shown as the result of constructive wave interference.
Q. F. Li, K. R. Chu
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A multiple reflection approach is employed to examine the properties of the lowQ open resonators commonly used in high power gyrotrons. The resonant frequency, diffractionQ, and RF field profile are derived in closed forms in the lowQ limit. Formation of the eigenmode in the resonator is shown as the result of constructive wave interference.
Q. F. Li, K. R. Chu
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Open resonators with inhomogeneities
23rd European Microwave Conference, 1993, 1993An analysis of electromagnetic properties of an Open Resonator (OR) with perfectly conducting cylindrical inhomogeneities is presented. The inhomogeneities of three types were studied. In the first case the conducting thin circular cylinder with a longitudinal slot is considered. This cavity-backed aperture possess the resonance features.
Vladimir Veremey +3 more
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A study on resonance characteristics of a microstrip open‐loop resonator
Microwave and Optical Technology Letters, 2001AbstractA microstrip open‐loop resonator (MOLR) is proposed for maximum miniaturization in microwave applications, and to obtain a wider upper stopband including the first spurious resonance frequency for planar bandpass filters. The effect of variation in the width of one of the longer strips of an OLR formed in two ways (namely, fixed‐gap (FG) and ...
Gorur, A +3 more
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On the Complex Resonant Frequency of Open Dielectric Resonators
IEEE Transactions on Microwave Theory and Techniques, 1983An analytical method is presented for calculating accurately the complex resonant frequency of dielectric pillbox resonators. In this method, an approximated field of the resonator is expanded into a truncated series of solutions of the Hehnholtz equation in the spherical coordinates, and the boundary condtion on the resonator surface is treated in the
M. Tsuji, H. Shigesawa, K. Takiyama
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Electromagnetic theory of an open resonator
Journal of the Optical Society of America A, 2001Particular higher-order sources give rise to electromagnetic Gaussian beams, which are linearly polarized and have their maximum in the propagation direction. For this dipolar beam the cross-sectional shape changes in the propagation direction. Nodal surfaces exist on which the tangential component of the electric field vanishes in the standing wave ...
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Resonance Conditions of Open Resonators at Microwave Frequencies
IEEE Transactions on Microwave Theory and Techniques, 1974This paper presents an extension of Vajnshtejn's approach for computing the resonance frequencies and loss factors of Fabry-Perot (FP) resonators at microwave frequencies. Numerical results are presented for FP resonators operated at microwave through millimeter frequency range.
T. Itoh, R. Mittra
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Resonance characteristics of CPS open-loop resonator
2000 Asia-Pacific Microwave Conference. Proceedings (Cat. No.00TH8522), 2002A novel coplanar stripline (CPS) open-loop resonator (OLR) is proposed for maximum miniaturization in uniplanar microwave applications. In addition, the effect of variation in the one's width of longer strips of OLR (namely, CPS fixed gap (FG) OLR) that is realized by cutting a gap into the one of the longer strips, oriented along the direction of ...
C. Karpuz, G. Baykan, A. Gorur
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IEEE Transactions on Microwave Theory and Techniques, 1974
Field configurations and resonant frequencies are analytically derived for some low-loss modes of a Fabry-Perot (FP) open resonator having curved rims along the edges. Since the low-loss modes are limited by a caustic surface, the problem can be simply treated by neglecting the diffraction due to the finite dimensions of the mirrors.
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Field configurations and resonant frequencies are analytically derived for some low-loss modes of a Fabry-Perot (FP) open resonator having curved rims along the edges. Since the low-loss modes are limited by a caustic surface, the problem can be simply treated by neglecting the diffraction due to the finite dimensions of the mirrors.
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Open resonators powered by a rectangular waveguide
IEE Proceedings H Microwaves, Antennas and Propagation, 1992In the paper, by taking into account both diffraction and ohmic losses, a complete analysis of the excitation of an open resonator is developed. The coupling between the rectangular feeding waveguide and the cavity is fully considered, by taking into account all the relevant modes in the waveguide and the open cavity, in order to derive the coupling ...
BUCCI, OVIDIO MARIO, G. DI MASSA
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