phased arrays
Using Spherical Shells for Gain Enhancement of Compact Wideband Phased Arrays
... wideband phased array systems. This kind of phased arrays is composed of compact elements, which allow for a small distance between elements that is much less than half wavelength at lower operating ...
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Laser induced phased arrays for remote ultrasonic imaging of additive manufactured components
... ultrasonic phased arrays could offer ultrasonic images of increased quality, just like the transducer based ...conventional phased arrays, there are rows of transducers (typically number of ...
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Code Modulated Interferometric Imaging System using Phased Arrays.
... Inc. The chips are connected at board level to a patch antenna array. The serial interface is used to apply codes whereas the on-chip power detector and data converter are used for direct read out of the composite ...
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Millimeter-wave phased arrays in silicon
... of phased arrays for mainly radar applications. After the war, phased-array technology was developed on both sides of the Iron Curtain with investigations into the most critical component of ...
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High-Precision Phase Shifting and Real-Time Calibration of Phased Arrays for Passive Millimeter-Wave Imaging Applications
... In this paper, a high-precision online phase calibration method for phased array channels is proposed. It can not only solve the problem that port network parameters of phase shifter itself and other components ...
13
Distributed Beamforming Phased Arrays for Millimeter-Wave Radio.
... Second, phased arrays can employ baseband (or intermediate-frequency (IF)) phase shifting and combining, as shown in Fig. 2.1(b). This has the benefit of a simple design procedure for the low- frequency ...
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Flow measurement based on two dimensional flexural ultrasonic phased arrays
... ultrasonic phased arrays and a commercial single ultrasonic transducer (PROWAVE 500MB120), as shown in Figure ...channel phased array controller (FIToolbox, Diagnostic Sonar, Livingston, United ...
7
Phased arrays: A strategy to lower the energy threshold for neutrinos
... radio arrays employ a noise-riding trigger, which limits their minimum energy threshold based on the background noise temperature of the ...ice. Phased radio ar- rays could lower the energy threshold by ...
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Imaging Damage in Plate Structures with Linear Phased Arrays using Frequency-wavenumber Analysis.
... conventional phased array approach is more, the SNR of the received signals is higher as compared to the synthetic ...conventional phased arrays as compared to the synthetic phased ...
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Behaviorally Modeled Code-Modulation Based Embedded Test for Phased Arrays.
... CoMET in its prior art used a shunt-feed shunt-combine BIST topology for the purpose of signal injection and extraction respectively [ Gre17 ] . The modified BIST architecture introduced in [ Yeh18 ] and discussed above ...
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Development of a Post-Processing Algorithm for Accurate Human Skull Profile Extraction via Ultrasonic Phased Arrays
... Medical Ultrasonography is one of the leading non-invasive diagnostic imaging techniques. The cost-benefit ratio of Ultrasonic Imaging far exceeds other imaging techniques in terms of affordability, accessibility, ...
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Code-Modulated Embedded Test of Low-Cost, High-Performance Phased Arrays.
... GHz. Phased arrays, also known as beam-formers, are able to address this issue by combining multiple antenna responses to form a high-gain, directive-beam which can be electronically steered to the ...
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Rigorous 3D Vectorial Gaussian Beam Modeling of Demultiplexing Performance of Virtually-Imaged-Phased-Arrays
... of phased arrays, the device acts as a beam former and prefers some angles to others as suggested by radiation pattern illustrated in Figure 4 for uniform and graded reflection ...
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Full matrix capture and the total focusing imaging algorithm using laser induced ultrasonic phased arrays
... ultrasonic arrays have been proposed using spatial or temporal modification of the laser beam, or ...of phased arrays using laser ultrasonics have been proposed in the past: using a single laser ...
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Quantifying performance of ultrasonic immersion inspection using phased arrays for curvilinear disc forgings
... radii. Phased array FMC immersion inspection of curved components was simulated using finite element modelling, then visualized using surface-compensated focusing ...
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The Multi-Objective Optimization of Non-Uniform Linear Phased Arrays Using the Genetic Algorithm
... periodic arrays and thinned arrays are optimized to achieve these ...thinned arrays, where the optimized thinned arrays are more capable of reducing the MSLL of the radiation ...
17
Multi-aperture beamforming for automated large structure inspection using ultrasonic phased arrays
... through phased array probes, the current bottleneck is given by the time required to electrically fire all elements of the phased array probes, which limits the maximum scanning speed of the automated ...
6
Tray Based Millimeter-wave Quasi-Optical Amplifiers and Dual Polarized Phased Arrays
... phase shifters cause the beam to scan as the frequency of the transmitted signal varies, which is undesirable. In this chapter, the Rotman lens is chosen to be the phase shifting element for the dual polarized ...
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Performance of a Wide Angle and Wide Band Nulling Method for Phased Arrays
... case of no-mismatch (i.e., the assumed and true DOA are perfectly matched). For no-mismatch both arrays have almost the same SINR ratios of about 10 dB, which outperform that of the uniform array by 50 dB. ...
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Internally Sensed Optical Phased Arrays
... The performance of existing ground based space debris laser ranging systems can be im- proved by directing more light onto space debris by coherently combining multiple lasers using an optical phased array (OPA). ...
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