Ultra-broadband integration techniques for high-speed circuits and systems design

2010 ◽  
Author(s):  
Rhonda R Franklin ◽  
Hosaeng Kim ◽  
Young Seek Cho
Keyword(s):  
High Speed ◽  
Systems Design ◽  
Integration Techniques

Interactive Demonstration of an AC-130 Aircraft Virtual Reality Part Task Trainer

2017 ◽  
Vol 61 (1) ◽  
pp. 395-397
Author(s):  
Eric Sikorski ◽  
Amanda Palla
Keyword(s):  
Virtual Reality ◽  
High Speed ◽  
Development Program ◽  
Systems Design ◽  
Sensor Technology ◽  
Instructional Systems ◽  
Operational Parameters ◽  
Hand Motion ◽  
Head Mounted Display ◽  
Bare Hand

This session will demonstrate a Virtual Reality Part Task Trainer (vrPTT) that was developed under a Department of Defense funded research and development program. The vrPTT consists of Virtual Reality (VR) head mounted display (HMD) goggles and bare-hand motion sensor technology integrated via a high speed gaming computer that hosts an automated, intelligent tutor. Upon donning the VR goggles, the user is immersed into a cockpit of an AC-130 aircraft. The AC-130 system instruments are operationally accurate with selection and feedback indications true to aircraft operational parameters. The demonstration will allow participants to manipulate buttons and switches on a simulated checklist completion task within the immersive vrPTT environment. The Session attendees will gain an understanding of VR’s potential for DoD aircrew training from a human factors psychology and instructional systems design perspective by interacting with a developed capability.

scholarly journals Receiver Integration with Arrayed Waveguide Gratings toward Multi-Wavelength Data-Centric Communications and Computing

2020 ◽  
Vol 10 (22) ◽  
pp. 8205
Author(s):  
Yoshiyuki Doi ◽  
Toshihide Yoshimatsu ◽  
Yasuhiko Nakanishi ◽  
Satoshi Tsunashima ◽  
Masahiro Nada ◽  
...  
Keyword(s):  
Wavelength Division Multiplexing ◽  
High Speed ◽  
Baud Rate ◽  
Arrayed Waveguide Gratings ◽  
Wavelength Division ◽  
Integrated Devices ◽  
Multi Wavelength ◽  
Integration Techniques ◽  
Waveguide Gratings ◽  
Arrayed Waveguide

This paper reviews receivers that feature low-loss multimode-output arrayed waveguide gratings (MM-AWGs) for wavelength division multiplexing (WDM) as well as hybrid integration techniques with high-speed throughput of up to 100 Gb/s and beyond. A design of optical coupling between higher-order multimode beams and a photodiode for a flat-top spectral shape is described in detail. The WDM photoreceivers were fabricated with different approaches. A 10-Gb/s photoreceiver was developed for a 1.25-Gb/s baud rate and assembled for eight-channel WDM by mechanical alignment. A receiver with 40-Gb/s throughput was built by using visual alignment for a 10-Gb/s baud rate and four-channel WDM. A 100-Gb/s receiver assembled by active alignment with a four-channel by 25-Gb/s baud rate is the basis for beyond-100 Gb/s and future multi-wavelength integrated devices toward data-centric communications and computing.

scholarly journals Systems Design, Fabrication, and Testing of a High-Speed Miniature Motor for Cryogenic Cooler

2009 ◽  
Vol 2009 ◽  
pp. 1-9 ◽  
Author(s):  
Dipjyoti Acharya ◽  
Lei Zhou ◽  
Liping Zheng ◽  
Thomas X. Wu ◽  
Jay Kapat ◽  
...  
Keyword(s):  
Permanent Magnet ◽  
High Speed ◽  
Storage System ◽  
Permanent Magnet Synchronous Motor ◽  
Systems Design ◽  
Space Missions ◽  
Hydrogen Storage System ◽  
Long Term Storage ◽  
Cryogenic Cooler

The long-term storage of liquid hydrogen for space missions is of considerable interest to NASA. To this end, the Reverse Turbo-Brayton Cryocooler (RTBC) is considerably lighter than conventional designs and a potentially viable and attractive solution for NASA's long-term Zero-Boil-off (ZBO) hydrogen storage system for future space missions. We present the systems design, fabrication, and performance evaluation of the Permanent Magnet Synchronous Motor (PMSM) powering a cryocooler capable of removing 20 W of heat at 18 K with a COP of 0.005 and driven by two 2-kW permanent magnet synchronous motors operating at 200 000 rpm and at room temperature and 77 K. Structural, thermal, and rotordynamic aspects of system design are considered.

Review of Channel Characterization for Power Line Communications

2010 ◽  
Vol 108-111 ◽  
pp. 771-776
Author(s):  
Nan Tian Huang ◽  
Xiao Sheng Liu ◽  
Dian Guo Xu
Keyword(s):  
High Speed ◽  
Low Voltage ◽  
Systems Design ◽  
Power Line ◽  
Digital Data ◽  
Power Lines ◽  
Suitable Model ◽  
Actual Measurement ◽  
Power Line Communications ◽  
Medium Voltage

The power line communication (PLC) channel has been a transmission medium that enables to transfer high-speed digital data through the classical electrical wires. Channel characteristics of power lines are very important for communications systems design. In order to get the suitable model for power line communications analysis and improve the PLC communication quality, researchers do lots of study about the PLC channel characterizations based on actual measurement and theoretical analysis. This paper reviews the conclusions of recent studies, summaries the characteristics of PLC channel for medium voltage power lines and low voltage power lines. The further research is also put forward.

scholarly journals Effect of CNTs Parameter Variation on the Performance of Analog Device

2020 ◽  
Vol 9 (4) ◽  
pp. 237-241
Keyword(s):  
Analog Circuits ◽  
Power Dissipation ◽  
High Speed ◽  
Ballistic Transport ◽  
Average Power ◽  
Systems Design ◽  
Parameter Variation ◽  
Charge Carriers ◽  
Analog Device ◽  
Current Carrying Capability

Carbon nanotubes (CNTs) have emerged as a prominent material for present day nano-scale systems design. In spite of their widespread use in biology, and nano-electro mechanical systems (NEMS, CNTs have encroached upon conventional MOSFETs for the design of low power and high speed circuits. Because CNT possesses higher current carrying capability, higher transconductance and near ballistic transport of charge carriers. The diameter of the CNTs laid from the Source to the Drain in a CNFET has the significant influence on the characteristics of the device itself as well as on the features of circuits implemented using the said CNFET. Such variations in circuit parameters with CNT diameter can be shown to be more pronounced in analog circuits as compared to digital CNFET-based designs. The present work attempts to investigate the effect of diameter variation on a versatile analog building block (ABB) viz. the inverting current conveyor. It is demonstrated that various parameters of the ICC-II under scrutiny, like voltage bandwidth, current bandwidth, average power dissipation, etc. depend on the diameter of CNT(s) used in the CNFETs. HSPICE simulations performed on a 0.9V; 32nm CNFET-based ICC-II are included to exemplify the dependencies studied.

scholarly journals New High-Speed Machine Tool Structure by Holistic Mechatronic Systems Design

Procedia CIRP ◽  
2012 ◽  
Vol 1 ◽  
pp. 307-312 ◽  
Author(s):  
R. Neugebauer ◽  
S. Ihlenfeldt ◽  
U. Frieß ◽  
M. Wabner ◽  
S. Rauh
Keyword(s):  
Machine Tool ◽  
High Speed ◽  
Systems Design ◽  
Mechatronic Systems ◽  
Machine Tool Structure ◽  
High Speed Machine

Online data analysis and reduction: An important Co-design motif for extreme-scale computers

2021 ◽  
pp. 109434202110235
Author(s):  
Ian Foster ◽  
Mark Ainsworth ◽  
Julie Bessac ◽  
Franck Cappello ◽  
Jong Choi ◽  
...  
Keyword(s):  
Parallel Computing ◽  
Data Analysis ◽  
Design Process ◽  
Data Reduction ◽  
High Speed ◽  
Systems Design ◽  
Online Data ◽  
Exchange Information ◽  
Output Only ◽  
Extreme Scale

A growing disparity between supercomputer computation speeds and I/O rates means that it is rapidly becoming infeasible to analyze supercomputer application output only after that output has been written to a file system. Instead, data-generating applications must run concurrently with data reduction and/or analysis operations, with which they exchange information via high-speed methods such as interprocess communications. The resulting parallel computing motif, online data analysis and reduction (ODAR), has important implications for both application and HPC systems design. Here we introduce the ODAR motif and its co-design concerns, describe a co-design process for identifying and addressing those concerns, present tools that assist in the co-design process, and present case studies to illustrate the use of the process and tools in practical settings.

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