An endoluminal cylindrical sectored‐ring ultrasound phased‐array applicator for minimally‐invasive therapeutic ultrasound
Sign Up to like & getrecommendations! Published in 2022 at "Medical Physics"
DOI: 10.1002/mp.16113
Abstract: Abstract Background The size of catheter‐based ultrasound devices for delivering ultrasound energy to deep‐seated tumors is constrained by the access pathway which limits their therapeutic capabilities. Purpose To devise and investigate a deployable applicator suitable… read more here.
Keywords: applicator; phased array; cylindrical sectored; therapeutic ultrasound ... See more keywords
Radial streak artifact reduction using phased array beamforming
Sign Up to like & getrecommendations! Published in 2019 at "Magnetic Resonance in Medicine"
DOI: 10.1002/mrm.27689
Abstract: A new method for streak artifact reduction in radial MRI based on phased array filtering. read more here.
Keywords: phased array; artifact reduction; streak artifact;
A 60 GHz phased array with measurement and de-embedding techniques
Sign Up to like & getrecommendations! Published in 2018 at "Analog Integrated Circuits and Signal Processing"
DOI: 10.1007/s10470-018-1295-1
Abstract: We present a 60 GHz phased array system that combines several key technologies to realize 10 GHz bandwidth coverage. Particularly, a tightly coupled dipole array centered at 60 GHz is designed and tested for its wideband performance. The… read more here.
Keywords: ghz phased; phased array; array measurement; measurement embedding ... See more keywords
Beam steering characteristics of highly directive photoconductive dipole phased array antenna for terahertz imaging application
Sign Up to like & getrecommendations! Published in 2019 at "Optical and Quantum Electronics"
DOI: 10.1007/s11082-018-1730-7
Abstract: In this paper, the beam-steering characteristics of photoconductive dipole phased array antenna configuration at 1.95 THz is presented. The proposed array antenna configuration with frequency selective surface favourably improves its gain and directivity which is useful… read more here.
Keywords: beam steering; photoconductive dipole; antenna; phased array ... See more keywords
Performance Comparison of Ultrasonic Focusing Techniques for Phased Array Ultrasonic Inspection of Dissimilar Metal Welds
Sign Up to like & getrecommendations! Published in 2019 at "International Journal of Precision Engineering and Manufacturing"
DOI: 10.1007/s12541-019-00085-1
Abstract: Dissimilar metal welding that is the joining of two different metals which would not be welded together has been used in nuclear power plants so that the probability of occurrence of cracks that can cause… read more here.
Keywords: metal; metal welds; dissimilar metal; array ultrasonic ... See more keywords
Effects of proximity and noise level of phased array coil elements on overall signal-to-noise in parallel MR spectroscopy.
Sign Up to like & getrecommendations! Published in 2018 at "Magnetic resonance imaging"
DOI: 10.1016/j.mri.2017.12.001
Abstract: Parallel imaging using phased array coils facilitates accelerated magnetic resonance imaging (MRI) and spectroscopy (MRS). Parallel data reconstruction requires the combination of data from individual coil elements, but limited combination algorithms currently exist for higher-order… read more here.
Keywords: coil elements; phased array; coil; spectroscopy ... See more keywords
5G RAN architecture based on analog radio-over-fiber fronthaul over UDWDM-PON and phased array fed reflector antennas
Sign Up to like & getrecommendations! Published in 2020 at "Optics Communications"
DOI: 10.1016/j.optcom.2019.124464
Abstract: This manuscript introduces a 5G radio access network architecture concept based on ultra-dense wavelength division multiplexing (UDWDM) and incorporating an optical fronthaul network that uses a novel wireless antenna system for radio frequency transmission and… read more here.
Keywords: radio; fed reflector; phased array; array fed ... See more keywords
Fast beam steering enabled by a chip-scale optical phased array with 8 × 8 elements
Sign Up to like & getrecommendations! Published in 2020 at "Optics Communications"
DOI: 10.1016/j.optcom.2020.125267
Abstract: Abstract We present a two-dimensional (2D) optical phased array (OPA) with 8 × 8 elements in which light is electro-optically controlled by silicon phase modulators. The randomly distributed initial phases are calibrated through an interference technique to… read more here.
Keywords: beam steering; phased array; optical phased; beam ... See more keywords
EMAT phased array: A feasibility study of surface crack detection
Sign Up to like & getrecommendations! Published in 2017 at "Ultrasonics"
DOI: 10.1016/j.ultras.2017.02.009
Abstract: HIGHLIGHTSThe first low‐power (24 Vpp and 200 mA), pulse‐echo EMAT phased array is reported.An 8‐element array can image defects with a cross‐section of 0.2 × 0.8 mm2 at 1 MHz.Coil design enables crosstalk of ˜−15… read more here.
Keywords: array; phased arrays; surface; phased array ... See more keywords
Experimental validation of a phased array probe model in ultrasonic inspection.
Sign Up to like & getrecommendations! Published in 2020 at "Ultrasonics"
DOI: 10.1016/j.ultras.2020.106217
Abstract: New manufacturing technologies such as additive manufacturing facilitate flexible and complex designs and production of components. However, these new techniques should not compromise the safety aspect, which imposes higher demands on the integrity insurance and… read more here.
Keywords: array probe; probe model; phased array; experimental validation ... See more keywords
Towards using convolutional neural network to locate, identify and size defects in phased array ultrasonic testing.
Sign Up to like & getrecommendations! Published in 2021 at "Ultrasonics"
DOI: 10.1016/j.ultras.2021.106436
Abstract: Machine learning algorithms are widely used in image recognition. In Phased Array Ultrasonic Testing (PAUT), images are typically formed through constructive and destructive superpositions of signals backscattered from flaws or geometric features. However, all PAUT… read more here.
Keywords: test specimen; array; ultrasonic testing; phased array ... See more keywords