A robust approach to apodization design in phased arrays for ultrasound imaging
Sign Up to like & getrecommendations! Published in 2017 at "Ultrasonics"
DOI: 10.1016/j.ultras.2016.12.009
Abstract: HighlightsAn apodization method is proposed which is robust to the sound speed variations.The method minimizes the sidelobe level for a predefined mainlobe width.Using semidefinite relaxation method, the problem is efficiently solved.For all possible variations of… read more here.
Keywords: phased arrays; apodization; method; speed ... 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
FEM simulation and comparison of PMN-PT single crystals based phased array ultrasonic transducer by alternating current poling and direct current poling.
Sign Up to like & getrecommendations! Published in 2020 at "Ultrasonics"
DOI: 10.1016/j.ultras.2020.106175
Abstract: The Finite element modeling (FEM) simulation and comparison of electroacoustic properties for alternating current poling (ACP) phased arrays and direct current poling (DCP) phased arrays were investigated. The simulated electrical impedance reveals that the effective… read more here.
Keywords: current poling; acp phased; dcp arrays; phased arrays ... See more keywords
All-plasmonic Optical Phased Array Integrated on a Thin-film Platform
Sign Up to like & getrecommendations! Published in 2017 at "Scientific Reports"
DOI: 10.1038/s41598-017-10398-8
Abstract: Optical phased arrays have been demonstrated to enable a variety of applications ranging from high-speed on-chip communications to vertical surface emitting lasers. Despite the prosperities of the researches on optical phased arrays, presently, the reported… read more here.
Keywords: phased arrays; phased array; optical phased; plasmonic optical ... See more keywords
Wide‐angle 2D beam‐steering with Si‐based 16 × (1 × 16) optical phased arrays
Sign Up to like & getrecommendations! Published in 2020 at "Electronics Letters"
DOI: 10.1049/el.2019.3490
Abstract: The authors demonstrate integrated 1D optical phased arrays (OPAs) for wide-angle 2D beam-steering. The 2D OPA consists of 16 1D transversal steering OPAs whose radiators have different grating periods, to assign different longitudinal angles. The… read more here.
Keywords: beam steering; angle beam; wide angle; phased arrays ... See more keywords
Broadband acoustic converging and asymmetric converging based on thermoacoustic phased arrays
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Applied Physics"
DOI: 10.1063/1.5055288
Abstract: We report broadband acoustic converging and asymmetric converging based on mono- and dual-layer thermoacoustic phased arrays of Bessel-like beams, respectively. Based on the thermoacoustic units, we design a converging lens constructed by a monolayer phased… read more here.
Keywords: converging region; broadband acoustic; phased arrays; asymmetric converging ... See more keywords
Broadband acoustic focusing by symmetric Airy beams with phased arrays comprised of different numbers of cavity structures
Sign Up to like & getrecommendations! Published in 2017 at "Chinese Physics B"
DOI: 10.1088/1674-1056/26/11/114304
Abstract: We realize broadband acoustic focusing effect by employing two symmetric Airy beams generated from phased arrays, in which the units of the phased arrays consist of different numbers of cavity structures, each of which is… read more here.
Keywords: broadband acoustic; phased arrays; symmetric airy; cavity ... See more keywords
DDS-PLL Phase Shifter Architectures for Phased Arrays: Theory and Techniques
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Access"
DOI: 10.1109/access.2019.2895388
Abstract: The main purpose of this paper is to review the framework behind direct digital synthesizer phase-locked loops (DDS-PLLs), as well as to provide a set of novel techniques that can be used during the development… read more here.
Keywords: pll phase; dds pll; phase shifter; shifter architectures ... See more keywords
Inertially Controlled Two-Dimensional Phased Arrays by Exploiting Artificial Neural Networks and Ultra-Low-Power AI-Based Microcontrollers
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Access"
DOI: 10.1109/access.2023.3253639
Abstract: The use of Artificial Intelligence (AI) in electronics and electromagnetics is opening many attractive research opportunities related to the smart control of phased arrays. This is particularly challenging especially in some high-mobility contexts, such as… read more here.
Keywords: dimensional phased; neural network; phased arrays; two dimensional ... See more keywords
Novel Measures for Thermal Management of Silicon Photonic Optical Phased Arrays
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Photonics Journal"
DOI: 10.1109/jphot.2019.2925138
Abstract: Silicon photonics has become a promising technology for fabrication of compact, highly integrated systems. When dealing with phase sensitive silicon photonic components, however, temperature control and in particular, reduction of temperature gradients across phase sensitive… read more here.
Keywords: silicon photonic; thermal management; silicon; management silicon ... See more keywords
Optically Synchronized Phased Arrays in CMOS
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Journal of Solid-State Circuits"
DOI: 10.1109/jssc.2021.3136787
Abstract: Optical synchronization of large-span arrays offers significant benefits over electrical methods in terms of the weight, cost, power dissipation, and complexity of the clock distribution network. This work presents the analysis and design of the… read more here.
Keywords: arrays cmos; optically synchronized; cost; synchronized phased ... See more keywords