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Showing 1 to 20 of 210 for “"radiating"”.
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Acoustically driven piezoelectric radiating elements
This Dissertation was approved for publication on 2020-05-01 at 17:01.
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Radiating instability of nonzonal ocean currents
… due to the temporal growth of non-trapped (radiating) disturbances in such a boundary current is thought to be one of the main sources for the described variability. The problem of stability of an energetic current, such as the Gulf Stream, is formulated. The study then focuses on the …
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Lagrangian computations of radiating fire plumes
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2000.
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Radiating instability of nonzonal ocean currents
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1997.
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Trajectory estimation of an optically radiating source
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1995.
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Trajectory estimation of an optically radiating source
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1990.
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Convective instability in a layer of radiating fluid
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Geology and Geophysics, 1964.
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Time-to-intercept estimation for an optically radiating source
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1996.
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Focal waveform of a prolate-spheroidal impulse radiating antenna (IRA)
Impulse Radiating Antennas (IRAs) are designed to radiate very fast pulses in a narrow beam with low dispersion and high field amplitude. For this reason they have been used in a variety of applications. IRAs have been developed for the transient far-field region using paraboloidal reflectors. …
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Numerical and experimental analysis of circularly polarized radiating line antennas
… progress in the development of low-profile radiating lines for producing circularly polarized radiation. A numerical study of the Annular Sector Radiating Line (ANSERLIN) antenna was undertaken using the surface patch formulation of the electric-field integral equation, and the results were …
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Design of a Broadband Array Using the Foursquare Radiating Element
Broadband scanning arrays require small element spacing over a broad frequency band to achieve the desired scan capabilities. Previous research has concentrated on the development of small broadband elements to meet the demands of broadband arrays. However, mutual coupling between elements in a …
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Use of Admittance-Wall Models in Analysis of Radiating Line Antennas
… the development of analytical models for two radiating line antenna structures: the traveling-wave microstrip antenna and the Annular Sector Radiating Line (ANSERLIN) antenna. The models provide data and insights into the operation of the antennas without requiring large amounts of …
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Analysis of Arbitrarily Shaped Wire Antennas Radiating Over a Lossy Half-Space
Made available in DSpace on 2014-12-12T20:55:01Z (GMT). No. of bitstreams: 1 8004249.pdf: 3789104 bytes, checksum: a8c10912bf3a3648386c30bd8c950756 (MD5) Previous issue date: 1979
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Multi-Agent Path Planning for Locating a Radiating Source in an Unknown Environment
<p>A situation is addressed in which multiple autonomous agents are used to search an unknown environment for a target, the position and orientation of which is known with respect to each agent. A controlling framework is proposed to inform and coordinate the agents’ movements in order to reduce …
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Multidisciplinary design of thermally radiating structures using a level set based topology optimization approach
The need for efficient thermally radiating structures for aerospace applications is apparent in many system designs including satellites, launch vehicles and hypersonic aircraft. While multidisciplinary structural optimization methods have been employed to design these systems, few have …
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Attenuation of Low Frequency Structurally Radiated Noise With an Array of Weak Radiating Cells
The concept of a weak sound radiating cell is proposed to reduce the low frequency radiated noise from structures. The cell consists of two coupled surfaces such that, when placed on a vibrating structure, the responses of the two surfaces are nearly out-of-phase and of equal strength over a wide …
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Broadband Terahertz Signal Generation and Radiation Based on Direct Digital-to-Impulse Radiating Arrays in Silicon
… architecture is introduced that is capable of radiating a THz pulse by creating and exciting a broadband radiating resonator consisting of an on-chip antenna and a broadband matching network. This novel method converts a digital trigger edge to a radiated THz pulse with a high timing accuracy. …
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An Analytical Study of the Weak Radiating Cell as a Passive Low Frequency Noise Control Device
… structures. The device is referred to as a weak radiating cell. This device consists of two mechanically coupled surfaces such that, when placed on a vibrating structure, the response of the two surfaces are nearly out-of-phase and of equal strength over a wide frequency range. The response of …
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Extension of a high-order Petrov-Galerkin implementation applied to non-radiating and radar cross section geometries
Capabilities of a high-order Petrov-Galerkin solver are expanded to include N-port systems. Tait-Bryan angles are employed to launch electro-magnetic waves in arbitrary directions allowing off axis ports to be driven. The transverse-electric (TE) formulation is added allowing waveguide geometries …
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Design and simulation of a compact radiating system for high power microwaves in the 4 to 6 GHz range
… of Missouri has designed and simulated a compact radiating system for a compact virtual cathode oscillator. The radiating system has been developed to efficiently radiate high power microwaves in the 4 to 6 GHz range from an input mode of TE11. The system produces a radiation pattern with a …
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