Results 211 to 220 of about 9,878 (262)
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SPIE Proceedings, 2004
A number of concepts using the principle of the refraction of light have been developed to steer light beams. Refractive beam steering concepts involve the use of optical wedges in order to deviate a light beam. This principle is ideally suited for steering laser light since dispersion is minimal due to the monochromatic nature of the laser.
Roland E. Juhala, George Dube
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A number of concepts using the principle of the refraction of light have been developed to steer light beams. Refractive beam steering concepts involve the use of optical wedges in order to deviate a light beam. This principle is ideally suited for steering laser light since dispersion is minimal due to the monochromatic nature of the laser.
Roland E. Juhala, George Dube
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Beam Steering with Linear Arrays
IEEE Transactions on Biomedical Engineering, 1983The principles and techniques of real-time imaging with phased array ultrasound scanners are reviewed. Topics include 1) the geometric optics of beam steering and focusing with a linear array in the transmit and receive modes; 2) limitations on image data acquisition due to ultrasound propagation velocity; 3) optical diffraction theory for linear ...
O T, von Ramm, S W, Smith
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2019 8th Asia-Pacific Conference on Antennas and Propagation (APCAP), 2019
To reduce a risk of damage from an exposure and the guarantee of a stable receive level, in case of the system of a wireless LAN, a printed type inverted F antenna for beam-steering is designed and its characteristic is measured. A parasitic element having the optimized length and interval is attached in both sides of the printed type inverted F ...
Jong-Myung Woo +4 more
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To reduce a risk of damage from an exposure and the guarantee of a stable receive level, in case of the system of a wireless LAN, a printed type inverted F antenna for beam-steering is designed and its characteristic is measured. A parasitic element having the optimized length and interval is attached in both sides of the printed type inverted F ...
Jong-Myung Woo +4 more
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2017 International Conference on Innovations in Information, Embedded and Communication Systems (ICIIECS), 2017
In this paper, we have presented the process of beam steering and its advantages. Nowadays compact sized low profile antennas with planer structures and low fabrication cost have become essential. Therefore the antennas need to have enhanced gain and steerable radiation patterns. Therefore, beam steerable antennas have become very popular in modern day
Ankit Singh +4 more
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In this paper, we have presented the process of beam steering and its advantages. Nowadays compact sized low profile antennas with planer structures and low fabrication cost have become essential. Therefore the antennas need to have enhanced gain and steerable radiation patterns. Therefore, beam steerable antennas have become very popular in modern day
Ankit Singh +4 more
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2019 IEEE International Symposium on Phased Array System & Technology (PAST), 2019
Traditional methods of beam steering of antennas have used phase as the primary variable. The intent of this research work is to revisit the idea of using amplitude rather than phase or mechanical motion to steer the beam and explore it as a possibility for some of today's needs.
Siva Sai Krishna Puranam +2 more
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Traditional methods of beam steering of antennas have used phase as the primary variable. The intent of this research work is to revisit the idea of using amplitude rather than phase or mechanical motion to steer the beam and explore it as a possibility for some of today's needs.
Siva Sai Krishna Puranam +2 more
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Revolutionary Optical Beam Steering
Optica Advanced Photonics Congress 2022, 2022We have developed mechanical and non-mechanical beam steering technologies that will change the way optical systems are built. We can provide a very compact way rapidly steer multiple beams through almost any size aperture.
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Science, 2013
Physics Antenna arrays have long been used for communication and sensing purposes. In the microwave and radio wavelength regime of the electromagnetic spectrum, arrays of antennas in which the phase and amplitude input to each element is varied can provide tailored beam profiles with controlled directionality.
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Physics Antenna arrays have long been used for communication and sensing purposes. In the microwave and radio wavelength regime of the electromagnetic spectrum, arrays of antennas in which the phase and amplitude input to each element is varied can provide tailored beam profiles with controlled directionality.
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Dynamic Beam Steering With Reconfigurable Metagratings
IEEE Transactions on Antennas and Propagation, 2020Metagratings have recently shown promising features for wavefront manipulation, overcoming the efficiency limitations of gradient metasurfaces and their demanding fabrication requirements. Extreme functionalities, such as perfect anomalous reflection and refraction, focusing, and holography, have been proposed and tested. However, most of the developed
Andrea Casolaro +3 more
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Micro-receiver guided transcranial beam steering
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2002A new method for focusing ultrasound energy in brain tissue through the skull is investigated. The procedure is designed for use with a therapeutic transducer array and a small catheter-inserted hydrophone receiver placed in the brain to guide the array's focus.
Greg T, Clement, Kullervo, Hynynen
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Beam-Steering in 2D via Non-Linear Mapping of 1D Beam-Steering
2020 IEEE Photonics Conference (IPC), 2020A laser phased array capable of 1D beam-steering can be adapted to scanning a path in 2D using free-space optics or integrated phase plates.
Pawel Strzebonski +2 more
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