Results 21 to 30 of about 764,080 (262)
Investigation of Quadrate Fresnel Zone Plates Fabricated by Femtosecond Laser Direct Writing
Applied Sciences, 2022 The circular Fresnel zone plate (FZP) has been extensively used in micro-optics due to its outstanding focusing performance. Despite that, the curved edge of the circular zone has drawbacks limiting its use in terahertz imaging, array generator, and ...
Xiaoyan Sun +3 more
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Applied Sciences, 2021 The through-transmission (TT) method is mainly used to measure the amplitude of the second harmonic from which the acoustic nonlinear parameter is determined for early damage detection of materials.
Hyunjo Jeong, Hyojeong Shin
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2012 IEEE Conference on Computer Vision and Pattern Recognition, 2012 We consider the problem of shape recovery for real world scenes, where a variety of global illumination (inter-reflections, subsurface scattering, etc.) and illumination defocus effects are present. These effects introduce systematic and often significant errors in the recovered shape.
Gupta, Mohit, Nayar, Shree K.
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Polarization-induced phase shift of ultrafast photocurrents
EPJ Web of Conferences, 2013 Shift and injection currents are known to occur for linearly and circularly polarized optical excitations of semiconductors, respectively. Here, we show with room-temperature experiments that for excitation of discrete transitions the frequency dynamics ...
Pierz K., Priyadarshi S., Bieler M.
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Phase-shifting algorithms with known and unknown phase shifts: comparison and hybrid
Optics Express, 2022 The phase-shifting interferometry has been intensively studied for more than half a century, and is still actively investigated and improved for more demanding precision measurement requirements. A proper phase-shifting algorithm (PSA) for phase extraction should consider various error sources including (i) the phase-shift errors, (ii) the intensity ...
Yuchi Chen, Qian Kemao
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Journal of Engineering and Sustainable DevelopmentThis study presents a method to limit the functioning of the differential relay during the different operating conditions of an Indirect Symmetrical Phase Shift Transformer (ISPST).
Shailendra Kumar Bhasker, Manoj Tripathy
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ARO-The Scientific Journal of Koya University, 2020 branch-line microstrip coupler is designed and fabricated in this paper. The proposed coupler operates at 3 GHz, which is suitable for WiMAX applications.
Sayed M. Hosseini, Abbas Rezaei
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Design of K-Band Power Amplifier with 180-Degree Phase- Shift Function Using Low-Power CMOS Process
Applied Sciences, 2023 In this study, a K-band complementary metal oxide semiconductor (CMOS) power amplifier was designed using a low-power (LP) process to improve the integration of the beamforming system.
Seongjin Jang +3 more
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Pediatric Blood &Cancer, EarlyView.ABSTRACT Pediatric radiation therapy presents unique challenges compared to adult treatments, including those of immobilization, potential need for sedation, and the critical importance of accurate, reproducible positioning. Additionally, heightened attention to imaging doses is necessary to minimize long‐term toxicity in survivors.
Parham Alaei +17 more
wiley +1 more source
Coupling Matrix Extraction of Microwave Filters by Using One-Dimensional Convolutional Autoencoders
Frontiers in Physics, 2021 The tuning of microwave filter is important and complex. Extracting coupling matrix from given S-parameters is a core task for filter tuning. In this article, one-dimensional convolutional autoencoders (1D-CAEs) are proposed to extract coupling matrix ...
Yongliang Zhang +6 more
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