Results 271 to 280 of about 29,016 (334)
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Optics Letters, 2005
We numerically investigate the electromagnetic field radiated by a line source within a perfect lens [Phys. Rev. Lett. 85, 3966 (2000)] consisting of two orthogonal planes delimiting positive and negative index media. Use of a coordinate transformation [J. Phys. Condens Matter 15, 6345 (2003)] together with a well-adapted transfer-matrix method permits
Sébastien, Guenneau +2 more
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We numerically investigate the electromagnetic field radiated by a line source within a perfect lens [Phys. Rev. Lett. 85, 3966 (2000)] consisting of two orthogonal planes delimiting positive and negative index media. Use of a coordinate transformation [J. Phys. Condens Matter 15, 6345 (2003)] together with a well-adapted transfer-matrix method permits
Sébastien, Guenneau +2 more
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Depolarizing trihedral corner reflectors
Proceedings of IEEE Antennas and Propagation Society International Symposium, 2002An alternative method for altering the polarization response of a trihedral corner reflector which overcomes many of the limitations of previous work is shown. Conducting fins or corrugations of appropriate dimensions are added to one of the interor surfaces of the reflector such that the axis of the polarizer is oriented parallel to one of the ...
D.G. Michelson, E.V. Jull
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Optimum corner reflectors design
Proceedings of the 1996 IEEE National Radar Conference, 2002A general class of corner reflectors with high aperture efficiency referred to as self-illuminating corner reflectors, is introduced whose coherent interaction with their surrounding terrain is minimized and their total surface area is two-thirds of that of a trihedral corner reflector having the same maximum RCS.
K. Sarabandi, null Tsen-Chieh Chiu
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Dielectric EBG Corner Reflector Antenna
Journal of Electromagnetic Waves and Applications, 2010In this paper, we present a novel dielectric EBG corner reflector antenna. The reflector is realized using dielectric rods arranged in a square lattice. The influence of reflector width, length and source distance from the corner apex is investigated using a simple two-dimensional antenna model; results are then used to design a threedimensional ...
C. Biancotto, P. Record
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The Mathematics Teacher, 2011
Students investigate the geometrical properties used to design reflective safety garments and road signs.
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Students investigate the geometrical properties used to design reflective safety garments and road signs.
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Millimeter Wave Corner Reflector Antenna Array
The European Conference on Wireless Technology, 2005., 2005In this paper we introduce new millimeter wave printed arrays with eight axially placed dipoles fed by a symphase network with the corner reflector. Three different typical beamwidths are investigated by a variation of the corner angle. Antennas are simulated and realized in the frequency range about 26 GHz which is popular for microwave communication ...
A. Nesic +4 more
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A corrugated corner reflector system
IEEE Transactions on Antennas and Propagation, 1982A new type of corner reflector (CR) system with corrugated reflector elements has been realized, and experimental results are presented. This system gives better performance than conventional corner reflectors with plane elements. Experimental data regarding hall-power beamwidth (HPBW), on-axis power, and voltage standing-wave ratio (VSWR) are ...
K. Vasudevan, K. Nair
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A novel corner reflector antenna
Microwave and Optical Technology Letters, 2001AbstractA new type of corner reflector (CR) antenna with a rectangular dielectric feed is presented. The radiation characteristics of the wideband CR were studied and compared with a standard corner reflector antenna. It is observed that this novel CR antenna has a wide bandwidth and better performance. © 2001 John Wiley & Sons, Inc.
V. P. Joseph, K. T. Mathew
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The Mathematics Teacher, 1983
In July of 1969. the Apollo astronauts placed an array of corner reflectors on the moon. The array was used to reflect an earth-originating pulsed laser beam back to earth. The total travel time of a pulse (about 2.5 seconds) yielded a more accurate determination (to within 6 inches) of the distance from the earth to the moon (approximate mean value ...
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In July of 1969. the Apollo astronauts placed an array of corner reflectors on the moon. The array was used to reflect an earth-originating pulsed laser beam back to earth. The total travel time of a pulse (about 2.5 seconds) yielded a more accurate determination (to within 6 inches) of the distance from the earth to the moon (approximate mean value ...
openaire +1 more source