To see the other types of publications on this topic, follow the link: LARGE BANDWIDTH.

Journal articles on the topic 'LARGE BANDWIDTH'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'LARGE BANDWIDTH.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Ozawa, Akira, and Thomas Udem. "Very large bandwidth lasers." Nature Photonics 15, no. 4 (2021): 247–49. http://dx.doi.org/10.1038/s41566-021-00788-w.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Cheng, Scott, Jun-Liang Lin, Murali Emani, et al. "Thorough Characterization and Analysis of Large Transformer Model Training At-Scale." Proceedings of the ACM on Measurement and Analysis of Computing Systems 8, no. 1 (2024): 1–25. http://dx.doi.org/10.1145/3639034.

Full text
Abstract:
Large transformer models have recently achieved great success across various domains. With a growing number of model parameters, a large transformer model training today typically involves model sharding, data parallelism, and model parallelism. Thus, the throughput of large-scale model training depends heavily on the network bandwidth since a combination of model sharding and multiple parallelism strategies incurs various costs. However, prior characterizations of transformer models on high-bandwidth DGX machines that use TFLOPS as a metric may not reflect the performance of a system with low
APA, Harvard, Vancouver, ISO, and other styles
3

Cheng, Scott, Jun-Liang Lin, Murali Emani, et al. "Thorough Characterization and Analysis of Large Transformer Model Training At-Scale." ACM SIGMETRICS Performance Evaluation Review 52, no. 1 (2024): 39–40. http://dx.doi.org/10.1145/3673660.3655087.

Full text
Abstract:
Large transformer models have recently achieved great success across various domains. With a growing number of model parameters, a large transformer model training today typically involves model sharding, data parallelism, and model parallelism. Thus, the throughput of large-scale model training depends heavily on the network bandwidth since a combination of model sharding and multiple parallelism strategies incurs various costs. However, prior characterizations of transformer models on high-bandwidth DGX machines that use TFLOPS as a metric may not reflect the performance of a system with low
APA, Harvard, Vancouver, ISO, and other styles
4

Fuss, Ian. "Cryogenic large bandwidth acoustooptic deflectors." Applied Optics 26, no. 7 (1987): 1222. http://dx.doi.org/10.1364/ao.26.001222.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Johnson, Aaron, Rob Jansen, Nicholas Hopper, Aaron Segal, and Paul Syverson. "PeerFlow: Secure Load Balancing in Tor." Proceedings on Privacy Enhancing Technologies 2017, no. 2 (2017): 74–94. http://dx.doi.org/10.1515/popets-2017-0017.

Full text
Abstract:
Abstract We present PeerFlow, a system to securely load balance client traffic in Tor. Security in Tor requires that no adversary handle too much traffic. However, Tor relays are run by volunteers who cannot be trusted to report the relay bandwidths, which Tor clients use for load balancing. We show that existing methods to determine the bandwidths of Tor relays allow an adversary with little bandwidth to attack large amounts of client traffic. These methods include Tor’s current bandwidth-scanning system, TorFlow, and the peer-measurement system EigenSpeed. We present an improved design calle
APA, Harvard, Vancouver, ISO, and other styles
6

ÖZSOY, Şeyma Nur, and Sevilay KİLMEN. "Comparison of Kernel equating methods under NEAT and NEC designs." International Journal of Assessment Tools in Education 10, no. 1 (2023): 56–75. http://dx.doi.org/10.21449/ijate.981367.

Full text
Abstract:
In this study, Kernel test equating methods were compared under NEAT and NEC designs. In NEAT design, Kernel post-stratification and chain equating methods taking into account optimal and large bandwidths were compared. In the NEC design, gender and/or computer/tablet use was considered as a covariate, and Kernel test equating methods were performed by using these covariates and considering bandwidths. The study shows that, in the NEAT design, Kernel chain equating methods exhibit higher error than the post-stratification equating methods do since the lowest error in the NEC design was obtaine
APA, Harvard, Vancouver, ISO, and other styles
7

Alshaykh, Mohammed S. "Generating Large Time–Bandwidth Product RF-Chirped Waveforms Using Vernier Dual-Optical Frequency Combs." Photonics 12, no. 7 (2025): 700. https://doi.org/10.3390/photonics12070700.

Full text
Abstract:
Chirped radio-frequency signals are essential waveforms in radar systems. To enhance resolution and improve the signal-to-noise ratio through higher energy transmission, chirps with high time–bandwidth products are highly desirable. Photonic technologies, with their ability to handle broad electrical bandwidths, have been widely employed in the generation, filtering, processing, and detection of broadband electrical waveforms. In this work, we propose a photonics-based large-TBWP RF chirp generator utilizing dual optical frequency combs with a small difference in the repetition rate. By employ
APA, Harvard, Vancouver, ISO, and other styles
8

Croq, F., and A. Papiernik. "Large bandwidth aperture-coupled microstrip antenna." Electronics Letters 26, no. 16 (1990): 1293. http://dx.doi.org/10.1049/el:19900832.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Søndergaard, Thomas, and Andrei Lavrinenko. "Large-bandwidth planar photonic crystal waveguides." Optics Communications 203, no. 3-6 (2002): 263–70. http://dx.doi.org/10.1016/s0030-4018(02)01172-0.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Thouin, Frederic, Mark Coates, and Michael Rabbat. "Large scale probabilistic available bandwidth estimation." Computer Networks 55, no. 9 (2011): 2065–78. http://dx.doi.org/10.1016/j.comnet.2011.02.011.

Full text
APA, Harvard, Vancouver, ISO, and other styles
11

Grose, John H., Joseph W. Hall, and Madhu B. Dev. "MLD in Children." Journal of Speech, Language, and Hearing Research 40, no. 4 (1997): 955–59. http://dx.doi.org/10.1044/jslhr.4004.955.

Full text
Abstract:
The first aim of this study was to obtain a more detailed picture of the effect of masker bandwidth (20 Hz to 1000 Hz bandwidth) on the masking level difference (MLD) for a 500-Hz signal as a function of listener age. The results of the pure-tone signal experiment showed that the MLDs of older children differed from adults only for the narrowest masker bandwidth. In contrast, children younger than about 7 years of age tended to have smaller MLDs than adults at all but the widest masker bandwidths. These results suggest that the younger the listener, the wider the noise bandwidth must be for ML
APA, Harvard, Vancouver, ISO, and other styles
12

Barreiro-Ures, Daniel, Ricardo Cao, and Mario Francisco-Fernández. "Bandwidth Selection in Nonparametric Regression with Large Sample Size." Proceedings 2, no. 18 (2018): 1166. http://dx.doi.org/10.3390/proceedings2181166.

Full text
Abstract:
In the context of nonparametric regression estimation, the behaviour of kernel methods such as the Nadaraya-Watson or local linear estimators is heavily influenced by the value of the bandwidth parameter, which determines the trade-off between bias and variance. This clearly implies that the selection of an optimal bandwidth, in the sense of minimizing some risk function (MSE, MISE, etc.), is a crucial issue. However, the task of estimating an optimal bandwidth using the whole sample can be very expensive in terms of computing time in the context of Big Data, due to the computational complexit
APA, Harvard, Vancouver, ISO, and other styles
13

Zhao, Hezhang, Hu He, Shifeng Li, et al. "KlyH: 1D Disk Model-Based Large-Signal Simulation Software for Klystrons." Electronics 14, no. 11 (2025): 2223. https://doi.org/10.3390/electronics14112223.

Full text
Abstract:
This paper presents KlyH, a new 1D (one-dimensional) large-signal simulation software for klystrons, designed to deliver efficient and accurate simulation and optimization tools. KlyH integrates a Fortran-based dynamic link library (DLL) as its computational core, which employs high-performance numerical algorithms to rapidly compute critical parameters such as efficiency, gain, and bandwidth. Compared with traditional 1D simulation tools, which often lack open interfaces and extensibility, KlyH is built with a modular and open architecture that supports seamless integration with advanced opti
APA, Harvard, Vancouver, ISO, and other styles
14

Cui, Zhichao, Haigang Hou, Shahid Hussain, Guiwu Liu, and Guanjun Qiao. "Study on Innovative Flexible Design Method for Thin Film Narrow Band-Pass Filters." Journal of Nanoelectronics and Optoelectronics 17, no. 1 (2022): 112–20. http://dx.doi.org/10.1166/jno.2022.3176.

Full text
Abstract:
The thin film narrow band-pass filters are widely used in precision optical systems such as gas detection, fiber optic communication and optical analysis instruments due to their unique optical characteristics. However, as the applications become more widespread, the problems of regulating the half bandwidth and cut-off bandwidth of the thin film narrow band-pass filters based on the Fabry-Perot (F-P) principle are becoming more apparent. In this work, we took the thin film narrow band-pass filter with a center wavelength of 450 nm as the design target, and comprehensively optimized the film s
APA, Harvard, Vancouver, ISO, and other styles
15

Ngo, K. D. T., S. Kirachaiwanich, and M. Walters. "Buck modulator with improved large-power bandwidth." IEEE Transactions on Aerospace and Electronic Systems 38, no. 4 (2002): 1335–43. http://dx.doi.org/10.1109/taes.2002.1145754.

Full text
APA, Harvard, Vancouver, ISO, and other styles
16

Levine, E., S. Shtrikman, and D. Treves. "Double-sided printed arrays with large bandwidth." IEE Proceedings H Microwaves, Antennas and Propagation 135, no. 1 (1988): 54. http://dx.doi.org/10.1049/ip-h-2.1988.0010.

Full text
APA, Harvard, Vancouver, ISO, and other styles
17

Christov, I. P., and I. V. Tomov. "Large bandwidth pulse compression with diffraction gratings." Optics Communications 58, no. 5 (1986): 338–42. http://dx.doi.org/10.1016/0030-4018(86)90240-3.

Full text
APA, Harvard, Vancouver, ISO, and other styles
18

Giusi, Gino, Gianluca Cannatà, Graziella Scandurra, and Carmine Ciofi. "Ultra-low-noise large-bandwidth transimpedance amplifier." International Journal of Circuit Theory and Applications 43, no. 10 (2014): 1455–73. http://dx.doi.org/10.1002/cta.2015.

Full text
APA, Harvard, Vancouver, ISO, and other styles
19

Hoefler, Torsten, Tommaso Bonoto, Daniele De Sensi, et al. "HammingMesh: A Network Topology for Large-Scale Deep Learning." Communications of the ACM 67, no. 12 (2024): 97–105. http://dx.doi.org/10.1145/3623490.

Full text
Abstract:
Numerous microarchitectural optimizations unlocked tremendous processing power for deep neural networks that in turn fueled the ongoing AI revolution. With the exhaustion of such optimizations, the growth of modern AI is now gated by the performance of training systems, especially their data movement. Instead of focusing on single accelerators, we investigate data-movement characteristics of large-scale training at full system scale. Based on our workload analysis, we design HammingMesh, a novel network topology that provides high bandwidth at low cost with high job scheduling flexibility. Spe
APA, Harvard, Vancouver, ISO, and other styles
20

Koepfli, Stefan M., Michael Baumann, Yesim Koyaz, et al. "Metamaterial graphene photodetector with bandwidth exceeding 500 gigahertz." Science 380, no. 6650 (2023): 1169–74. http://dx.doi.org/10.1126/science.adg8017.

Full text
Abstract:
Although graphene has met many of its initially predicted optoelectronic, thermal, and mechanical properties, photodetectors with large spectral bandwidths and extremely high frequency responses remain outstanding. In this work, we demonstrate a >500 gigahertz, flat–frequency response, graphene-based photodetector that operates under ambient conditions across a 200-nanometer-wide spectral band with center wavelengths adaptable from <1400 to >4200 nanometers. Our detector combines graphene with metamaterial perfect absorbers with direct illumination from a single-mode fiber, which brea
APA, Harvard, Vancouver, ISO, and other styles
21

Kakoyiannis, Constantine G., and Philip Constantinou. "Compact Printed Arrays with Embedded Coupling Mitigation for Energy-Efficient Wireless Sensor Networking." International Journal of Antennas and Propagation 2010 (2010): 1–18. http://dx.doi.org/10.1155/2010/596291.

Full text
Abstract:
Wireless sensors emerged as narrowband, resource-constrained devices to provide monitoring services over a wide life span. Future applications of sensor networks are multimedia-driven and include sensor mobility. Thus, sensors must combine small size, large bandwidth, and diversity capabilities. Compact arrays, offering transmit/receive diversity, suffer from strong mutual coupling (MC), which causes lower antenna efficiency, loss of bandwidth, and signal correlation. An efficient technique to reduce coupling in compact arrays is described herein: a defect was inserted in the ground plane (GND
APA, Harvard, Vancouver, ISO, and other styles
22

Wu, Ji, Li Liang, Kefeng Tu, Kunying Li, Zi Wang, and Guoqiang Lü. "Serrated periodic electrode for high energy efficiency and large bandwidth acousto-optic modulators." Chinese Optics Letters 21, no. 3 (2023): 031403. http://dx.doi.org/10.3788/col202321.031403.

Full text
APA, Harvard, Vancouver, ISO, and other styles
23

Ma, Yanyan, Rong Wu, and Longfei Li. "Research on slow light transmission with wide bandwidth and large normalized delay bandwidth product." Optoelectronics Letters 17, no. 7 (2021): 407–11. http://dx.doi.org/10.1007/s11801-021-0125-3.

Full text
APA, Harvard, Vancouver, ISO, and other styles
24

Zhao, Lei, Lei Shi, and Congying Zhu. "New Nonlinear Second-Order Phase-Locked Loop with Adaptive Bandwidth Regulation." Electronics 7, no. 12 (2018): 346. http://dx.doi.org/10.3390/electronics7120346.

Full text
Abstract:
Synchronization of large acquisition bandwidth brings great challenges to the traditional second-order phase-locked loop (PLL). To address the contradiction between acquisition bandwidth and noise suppression capability of the traditional PLL, a new second-order PLL coupled with a nonlinear element is proposed. The proposed nonlinear second-order PLL regulates the loop noise bandwidth adaptively by the nonlinear module. When a large input–output phase error occurs, this PLL reduces the frequency offset quickly by taking advantage of the large bandwidth. When the phase error is reduced by the l
APA, Harvard, Vancouver, ISO, and other styles
25

Mohamed, Bikrat, and Bri Seddik. "A bandwidth reconfigurable antenna for devices in low UWB-applications." TELKOMNIKA (Telecommunication, Computing, Electronics and Control) 21, no. 2 (2023): 272–79. https://doi.org/10.12928/telkomnika.v21i2.24256.

Full text
Abstract:
A reconfigurable simple design planar antenna for ultra-wideband applications is proposed, with E-shaped slot contained four narrow vertical slots that has the capacity of switching using four PIN diodes with a ground plan and a microstrip power line. An additional circularly polarized (CP) band is obtained by changing the on/off states of the PIN diodes. Moreover, the four PIN diodes are attached in the middle of the E-shape slot and used to switch the radiation flow of the patch. For validation, a patch antenna design is offered, based on a distinctive situation analysis. The antenna offers
APA, Harvard, Vancouver, ISO, and other styles
26

Hachi, Asmae, Hassan Lebbar, and Mohamed Himdi. "3D PRINTED LARGE BANDWIDTH NEW YAGI-UDA ANTENNA." Progress In Electromagnetics Research Letters 88 (2020): 129–35. http://dx.doi.org/10.2528/pierl19101303.

Full text
APA, Harvard, Vancouver, ISO, and other styles
27

Oner, B. B., K. Üstün, H. Kurt, A. K. Okyay, and G. Turhan-Sayan. "Large bandwidth mode order converter by differential waveguides." Optics Express 23, no. 3 (2015): 3186. http://dx.doi.org/10.1364/oe.23.003186.

Full text
APA, Harvard, Vancouver, ISO, and other styles
28

Chang, H. S., K. J. Satzinger, Y. P. Zhong, et al. "A fast and large bandwidth superconducting variable coupler." Applied Physics Letters 117, no. 24 (2020): 244001. http://dx.doi.org/10.1063/5.0028840.

Full text
APA, Harvard, Vancouver, ISO, and other styles
29

Jones, M. C. "KERNEL DENSITY ESTIMATION WHEN THE BANDWIDTH IS LARGE." Australian Journal of Statistics 35, no. 3 (1993): 319–26. http://dx.doi.org/10.1111/j.1467-842x.1993.tb01339.x.

Full text
APA, Harvard, Vancouver, ISO, and other styles
30

Lee, S., and J. H. Han. "Undulator operation for PAL-XFEL large bandwidth modes." Journal of Instrumentation 13, no. 08 (2018): T08007. http://dx.doi.org/10.1088/1748-0221/13/08/t08007.

Full text
APA, Harvard, Vancouver, ISO, and other styles
31

Ginis, Vincent, Philippe Tassin, Thomas Koschny, and Costas M. Soukoulis. "Broadband metasurfaces enabling arbitrarily large delay-bandwidth products." Applied Physics Letters 108, no. 3 (2016): 031601. http://dx.doi.org/10.1063/1.4939979.

Full text
APA, Harvard, Vancouver, ISO, and other styles
32

Pieraccini, M., A. Bicci, D. Mecatti, G. Macaluso, and C. Atzeni. "Propagation of Large Bandwidth Microwave Signals in Water." IEEE Transactions on Antennas and Propagation 57, no. 11 (2009): 3612–18. http://dx.doi.org/10.1109/tap.2009.2025674.

Full text
APA, Harvard, Vancouver, ISO, and other styles
33

Wojtczuk, S. J., J. M. Ballantyne, Y. K. Chen, and S. Wanuga. "Monolithically integrated, photoreceiver with large, gain-bandwidth product." Electronics Letters 23, no. 11 (1987): 574–76. http://dx.doi.org/10.1049/el:19870411.

Full text
APA, Harvard, Vancouver, ISO, and other styles
34

Morrow, I., and J. R. James. "Sequentially rotated large bandwidth circularly polarised printed antennas." Electronics Letters 31, no. 24 (1995): 2062–64. http://dx.doi.org/10.1049/el:19951452.

Full text
APA, Harvard, Vancouver, ISO, and other styles
35

Khan, Salman Naeem, Xueguan Liu, Lvxia Shao, and Ying Wang. "COMPLEMENTARY SPLIT RING RESONATORS OF LARGE STOP BANDWIDTH." Progress In Electromagnetics Research Letters 14 (2010): 127–32. http://dx.doi.org/10.2528/pierl10033105.

Full text
APA, Harvard, Vancouver, ISO, and other styles
36

Lewis, J. M. "Bandwidth utilization of a large local area network." IEEE Communications Magazine 27, no. 2 (1989): 25–30. http://dx.doi.org/10.1109/35.17650.

Full text
APA, Harvard, Vancouver, ISO, and other styles
37

Rainal, A. J. "Bandwidth from a large excursion of Gaussian noise." IEEE Transactions on Instrumentation and Measurement 40, no. 4 (1991): 688–93. http://dx.doi.org/10.1109/19.85335.

Full text
APA, Harvard, Vancouver, ISO, and other styles
38

Zhang, Honglin, and Jianhao Ye. "A Wideband High Gain Differential Patch Antenna Featuring In-Phase Radiating Apertures." Sensors 24, no. 14 (2024): 4641. http://dx.doi.org/10.3390/s24144641.

Full text
Abstract:
Communication systems need antennas with wide bandwidths to provide large throughput, while imaging radars benefit from high gain for increased range and wide bandwidths for high-resolution imaging. This paper presents the design and evaluation of a wideband, high-gain antenna that achieves an average gain of 9.7 dBi over a bandwidth of 1.49 GHz to 3.92 GHz by using multiple in-phase radiating apertures. The antenna has a unique structure with a central rectangular short-circuited patch sandwiched between two back-to-back U-shaped radiating patches and two flanking H-shaped short-circuited pat
APA, Harvard, Vancouver, ISO, and other styles
39

Sheikh, Sofia, Grayce C. Brown, Jackson MacTaggart, et al. "Scintillation Bandwidth Measurements from 23 Pulsars from the AO327 Survey." Astrophysical Journal 976, no. 2 (2024): 225. http://dx.doi.org/10.3847/1538-4357/ad8659.

Full text
Abstract:
Abstract A pulsar’s scintillation bandwidth is inversely proportional to the scattering delay, making accurate measurements of scintillation bandwidth critical to characterize unmitigated delays in efforts to measure low-frequency gravitational waves with pulsar timing arrays. In this pilot work, we searched for a subset of known pulsars within ∼97% of the data taken with the Puerto Rico Ultimate Pulsar Processing Instrument for the AO327 survey with the Arecibo telescope, attempting to measure the scintillation bandwidths in the data set by fitting to the 2D autocorrelation function of their
APA, Harvard, Vancouver, ISO, and other styles
40

Csaba, Béla, and Bálint Vásárhelyi. "On the Relation of Separability, Bandwidth and Embedding." Graphs and Combinatorics 35, no. 6 (2019): 1541–53. http://dx.doi.org/10.1007/s00373-019-02086-3.

Full text
Abstract:
Abstract In this paper we construct a class of bounded degree bipartite graphs with a small separator and large bandwidth, thereby showing that separability and bandwidth are not linearly equivalent. Furthermore, we also prove that graphs from this class are spanning subgraphs of graphs with minimum degree just slightly above n / 2, even though their bandwidth is large.
APA, Harvard, Vancouver, ISO, and other styles
41

YANG, HUI-MIN. "BANDWIDTH ENHANCEMENT IN CHAOTIC SEMICONDUCTOR LASERS WITH STRONG CHAOTIC OPTICAL INJECTION." Modern Physics Letters B 26, no. 12 (2012): 1250073. http://dx.doi.org/10.1142/s021798491250073x.

Full text
Abstract:
The bandwidth properties of chaotic signals generated by semiconductor lasers subject to strong chaotic optical injection (COI) are investigated numerically. The chaotic output of an injection master laser (ML) is injected into the slave laser (SL). The effects of feedback strength, injection strength and bias current on the bandwidth properties are discussed in detail. Some novel results are found, the bandwidth for SL increases with the injection strength firstly until reaches a maximum, and then decrease to approach the bandwidth of ML due to the injection-locking chaos synchronization. Lar
APA, Harvard, Vancouver, ISO, and other styles
42

Jiang, Jingyan, Liang Hu, Chenghao Hu, Jiate Liu, and Zhi Wang. "BACombo—Bandwidth-Aware Decentralized Federated Learning." Electronics 9, no. 3 (2020): 440. http://dx.doi.org/10.3390/electronics9030440.

Full text
Abstract:
The emerging concern about data privacy and security has motivated the proposal of federated learning. Federated learning allows computing nodes to only synchronize the locally- trained models instead of their original data in distributed training. Conventional federated learning architecture, inherited from the parameter server design, relies on highly centralized typologies and large nodes-to-server bandwidths. However, in real-world federated learning scenarios, the network capacities between nodes are highly uniformly distributed and smaller than that in data centers. As a result, how to e
APA, Harvard, Vancouver, ISO, and other styles
43

Chen, Qiang, Hou Zhang, Lu-chun Yang, Bin-bin Li, and Xue-liang Min. "Wideband Inverted-L Microstrip-via-Fed Circularly Polarized Antenna with Asymmetrical Ground for WLAN/Wimax Applications." Frequenz 72, no. 7-8 (2018): 333–41. http://dx.doi.org/10.1515/freq-2017-0075.

Full text
Abstract:
Abstract A design with wideband and circularly polarized radiation antenna from an open-slot antenna has been demonstrated in this paper. The proposed antenna, which consists of an open slot and an inverted-L strip feeding, provides a large bandwidth, which completely cover the Wimax (3.3–3.8 GHz) and WLAN (2.4–2.48 GHz) bands. The open slot is formed by an modified ground plane with a slit cut and monofilar spiral stubs employed, which fed by an asymmetrical inverted-L strip feedline using a via. As demonstrated, the CP operation was significantly improved by loading monofilar spiral stubs co
APA, Harvard, Vancouver, ISO, and other styles
44

Qi, Junli, Xin Chen, Meicheng Fu, et al. "Effects of Optical Sampling Pulse Power, RF Power, and Electronic Back-End Bandwidth on the Performance of Photonic Analog-to-Digital Converter." Micromachines 14, no. 12 (2023): 2155. http://dx.doi.org/10.3390/mi14122155.

Full text
Abstract:
The effects of optical sampling pulse power, RF power, and electronic back-end bandwidth on the performance of time- and wavelength-interleaved photonic analog-to-digital converter (PADC) with eight-channel 41.6 GHz pulses have been experimentally investigated in detail. The effective number of bits (ENOB) and peak-to-peak voltage (Vpp) of converted 10.6 GHz electrical signals were used to characterize the effects. For the 1550.116 nm channel with 5.2 G samples per second, an average pulse power of 0 to −10 dBm input to the photoelectric detector (PD) has been tested. The Vpp increased with in
APA, Harvard, Vancouver, ISO, and other styles
45

Feng, Qi Bin, Yu Song Guo, and Guo Qiang Lv. "Design and Fabrication of Volume Holographic Gratings with Large Angular Bandwidth and High Diffraction Efficiency." Applied Mechanics and Materials 926 (April 23, 2025): 51–57. https://doi.org/10.4028/p-n2y8o4.

Full text
Abstract:
High-performance volume holographic grating (VHG) is an important coupling element for a holographic waveguide system. Small angular bandwidth and low diffraction efficiency restrict the applications of VHGs. Based on asymmetrical recording, a reflection VHG with large angular bandwidth and high diffraction efficiency are designed and prepared. The relationship between the recording angles and the diffraction efficiency is discussed first and several combinations of the recording angles are found. Then the relationship between the recording angles and the angular bandwidth is further analyzed,
APA, Harvard, Vancouver, ISO, and other styles
46

MOSTAFA, HASSAN, HEWIDA MOHAMED, and A. M. SOLIMAN. "NOVEL FCS-BASED LAYOUT-FRIENDLY ACCURATE WIDE-BAND LOW-POWER CCII- REALIZATIONS." Journal of Circuits, Systems and Computers 19, no. 05 (2010): 997–1014. http://dx.doi.org/10.1142/s0218126610006566.

Full text
Abstract:
This paper presents two novel Floating Current Source (FCS)-based CMOS negative second generation current conveyor (CCII-) realizations suitable for very large scale implementation. The proposed realizations provide high voltage and current tracking accuracy, as well as large voltage and current transfer bandwidths. Simulation results show that the first proposed wide-band CCII- bandwidth is about 972 MHz. Targeting low-power dissipation, a second low-power version of the wide-band CCII- is proposed at the expense of lower bandwidth and accuracy. The proposed CCII- realizations are layout-frie
APA, Harvard, Vancouver, ISO, and other styles
47

Prat, Eduard, Marco Calvi, and Sven Reiche. "Generation of ultra-large-bandwidth X-ray free-electron-laser pulses with a transverse-gradient undulator." Journal of Synchrotron Radiation 23, no. 4 (2016): 874–79. http://dx.doi.org/10.1107/s1600577516007177.

Full text
Abstract:
A new and simple method to generate X-ray free-electron-laser radiation with unprecedented spectral bandwidth above the 10% level is presented. The broad bandwidth is achieved by sending a transversely tilted beam through a transverse-gradient undulator. The extent of the bandwidth can easily be controlled by variation of the beam tilt or the undulator gradient. Numerical simulations confirm the validity and feasibility of this method.
APA, Harvard, Vancouver, ISO, and other styles
48

Wootton, R., J. Dornan, N. M. Fisk, et al. "The effect of transmission bandwidth on diagnostic accuracy in remote fetal ultrasound scanning." Journal of Telemedicine and Telecare 3, no. 4 (1997): 209–14. http://dx.doi.org/10.1258/1357633971931183.

Full text
Abstract:
Six subspecialists with considerable experience in fetal ultrasound viewed a selection of pre-recorded ultrasound scans. Scans from 18 patients recorded on VHS video-tape were supplied from five centres in the UK and Ireland, each made on a high-resolution ultrasound machine by an experienced sonologist at a referral centre. Each observer viewed the scans on a large display monitor in an individual viewing booth. The scans were viewed in random order, at randomly selected bandwidths. Observers, who were blinded to both recording and bandwidth, assessed the technical quality on a five-point Lik
APA, Harvard, Vancouver, ISO, and other styles
49

Kim, Sang Don, and Seung Eun Lee. "A Scalable Large Format Display Based on Zero Client Processor." International Journal of Electrical and Computer Engineering (IJECE) 5, no. 4 (2015): 714. http://dx.doi.org/10.11591/ijece.v5i4.pp714-719.

Full text
Abstract:
This paper proposes zero client module that targets Large Format Display (LFD) system for display wall. Increased resolution in modern LFD requires a high bandwidth channel and a high performance display controller to transfer the image data to the monitor. The key idea is to use a Gagabit-Etherent communication based Daisy-Chain to transfer an image data. This communication supports sufficient bandwidth for image data transfer. As a result, we implement the LFD system using tha zero client module and LFDmonitors.
APA, Harvard, Vancouver, ISO, and other styles
50

Gonzaga de Oliveira, Sanderson L., and Libério M. Silva. "Low-cost heuristics for matrix bandwidth reduction combined with a Hill-Climbing strategy." RAIRO - Operations Research 55, no. 4 (2021): 2247–64. http://dx.doi.org/10.1051/ro/2021102.

Full text
Abstract:
This paper studies heuristics for the bandwidth reduction of large-scale matrices in serial computations. Bandwidth optimization is a demanding subject for a large number of scientific and engineering applications. A heuristic for bandwidth reduction labels the rows and columns of a given sparse matrix. The algorithm arranges entries with a nonzero coefficient as close to the main diagonal as possible. This paper modifies an ant colony hyper-heuristic approach to generate expert-level heuristics for bandwidth reduction combined with a Hill-Climbing strategy when applied to matrices arising fro
APA, Harvard, Vancouver, ISO, and other styles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!