Results 251 to 260 of about 492,333 (290)
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Electrical Engineering, 1939
The principles of designing electromagnetic horn ``antennas'' to obtain beams of specified angular spread, smoothness of contour and power gain are disclosed. Quantitative curves are given from which the design of sectoral and pyramidal horns may be readily made.
L. J. Chu, W. L. Barrow
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The principles of designing electromagnetic horn ``antennas'' to obtain beams of specified angular spread, smoothness of contour and power gain are disclosed. Quantitative curves are given from which the design of sectoral and pyramidal horns may be readily made.
L. J. Chu, W. L. Barrow
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Design of periodic electromagnets
IRE Transactions on Electron Devices, 1962The use of periodic permanent-magnet focusing structures in TWT research is complicated by the difficulty of changing the level of flux density on the axis. It is necessary to completely disassemble the focusing structure and remagnetize each individual magnet. To overcome this difficulty, periodic electromagnets have come into use.
S.W. Maley, W.J. Byrne
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Electromagnetic absorber design challenges
IEEE Electromagnetic Compatibility Magazine, 2019Design of low cost, light-weight, and flexible electromagnetic (EM) shielding structures, required for EM interference (EMI) mitigation is a complex problem. The complexity increases in manifolds since the EMIs, occurring over a wide range of frequencies, are of unknown polarization and may appear from an unknown direction. This article aims to address
Manish Mathew Tirkey, Nisha Gupta
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Design for electromagnetic ballistocardiograph
The Irish Journal of Medical Science, 1951The principles and construction of a “direct” electromagnetic ballis-tocardiograph are given. A scale drawing of the instrument described is provided. The applications of the instrument and the features of both normal and abnormal tracings are given.
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2003
In this paper we consider the design of transition regions (EM transient lenses) which serve to transmit waves, ideally with no reflection or distortion, from one transmission line to another. The design is accomplished by specifying the shape and medium of the lens region.
Alexander P. Stone, Carl E. Baum
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In this paper we consider the design of transition regions (EM transient lenses) which serve to transmit waves, ideally with no reflection or distortion, from one transmission line to another. The design is accomplished by specifying the shape and medium of the lens region.
Alexander P. Stone, Carl E. Baum
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Advances In Electromagnetic Design Of Fusion Devices
[1993] Digests of International Magnetics Conference, 1993The specification of the large magnets needed in future fusion reactors based on the tokamak concept is presented as an inverse electromagnetic problem. The influence of the eddy currents flowing in the metallic structure is illustrated. Currently used computational tools and related mathematical formulations are reviewed. The behavior predicted by the
ALBANESE, Raffaele +3 more
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Electromagnetic Metamaterials—Promises, Design, and Applications
Quantum Matter, 2014Since the year 2000 metamaterials attracted much interest. Fancy metamaterial applications such as the “perfect” Pendry lens and invisibility cloaks provided a boost of electromagnetic research. We outline difficulties associated with metamaterial design and consider metamaterial structures which are promising for industrial applications which will be ...
Hafner Christian +3 more
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Slot Design Of Optimized Electromagnetic Pumps
[1993] Digests of International Magnetics Conference, 1993A nonuniform slot distribution is used to optimize electromagnetic pumps. This geometry is tested with a finite element code. The performances are compared with the regular slot distribution of industrial prototypes. >
L. Leboucher, D. Villani
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Electromagnetic Design of Microactuators
2011The electromagnetic design of microactuators differs significantly from that of conventional motors in at least two respects: The use of microfabrication allows the design of completely new topologies of the active part that could not – or not economically – be manufactured from currently used iron and copper wire.
G. Janssen +4 more
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Design For Electromagnetic Compatibility
1996This chapter discusses design for electromagnetic compatibility (EMC) in the design of electrical and electronic equipment. We first describe how the subject of EMC divides into ‘emissions’ and ‘immunity’, discuss the implications of the European EMC Directive, and stress the importance of considering EMC at all stages of the design of equipment.
J. F. Dawson +4 more
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