Results 301 to 310 of about 1,998,737 (342)

Antenna shape synthesis using characteristic modes

IEEE Transactions on Antennas and Propagation, 1982
An initial effort is described to develop an antenna synthesis procedure by which the shape of a surface of rotation and its current density are deduced from a given far-field radiation pattern which satisfies the conditions of a characteristic mode.
R. Garbacz, D. Pozar
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An enhanced mode shape identification algorithm

30th Structures, Structural Dynamics and Materials Conference, 1989
A mode shape identification algorithm is developed which is characterized by a low sensitivity to measurement noise and a high accuracy of mode identification. The algorithm proposed here is also capable of identifying the mode shapes of structures with significant damping.
MICHAEL ROEMER, D. MOOK
openaire   +1 more source

Intracavity temporal shaping and mode-locking

Advanced Solid State Lasers, 2000
An all-optical laser system is shown : intracavity spectral filtering connected with quadratic polarization switching provides high efficiency temporal pulse shaping.
V. Couderc, V. Kermène, A. Desfarges-Berthelemot, L. Grossard, M. Tondusson, B. Colombeau   +5 more
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Vector modes of D-shaped fibres

IEE Proceedings J Optoelectronics, 1992
Vector normal modes are determined for a waveguide with a circular core and unbounded cladding in close proximity to a dielectric halfspace. This model is applicable to D-shaped or polished fibres and to a tapered fibre in contact with or in close proximity to a plane.
D. Marcuse, F. Ladouceur, J.D. Love
openaire   +1 more source

Optical Measurements of Flutter Mode Shapes

Journal of Aircraft, 2000
The usefulness of an optical motion capture system in aeroelastic wind-tunnel testing is investigated.
openaire   +1 more source

Assembling mode shapes by least squares

Mechanical Systems and Signal Processing, 2011
Abstract Assembling (or ‘gluing’) mode shapes identified from multiple setups is a problem frequently encountered in full-scale modal tests that cover a large number of locations with a limited number of sensors. Mode shapes identified in individual setups can have different sense and scaling.
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Noise Sensitivity of Mode Shape and Mode Shape Difference to Damage Detection

2022
Muyideen Abdulkareem, Abideen Ganiyu
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Y-Shape Dielectric Dual-Mode Resonator

IEEE Transactions on Microwave Theory and Techniques, 2008
In this paper, a new concept for a dual-mode dielectric resonator is presented, which is based on TM-mode operation in dielectric rods. By arranging the dielectric rods in Y-shape configuration, new fundamental eigenmode resonances are found to be present.
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Mode Shape Identification Using Mobile Sensors

2011
The accurate identification of mode shapes is a key issue for vibration analysis and model updating. The standard identification procedure is to place sensors at fixed locations in the structure, and identify modal coordinates at those points. Economic and practical constraints for in situ identification prevent the use of high number of sensors ...
Johannio Marulanda, Juan M. Caicedo
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MODE SHAPES

1969
ANTHONY E. ARMENÀKAS, DENOS C. GAZIS, GEORGE HERRMANN   +2 more
openaire   +1 more source