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Displaying 301 - 325 of 1414

Jitter Sensitivity Analysis of the Superconducting Josephson Arbitrary Waveform Synthesizer

November 4, 2018
Author(s)
Christine A. Donnelly, Justus Brevik, Paul Dresselhaus, Pete Hopkins, Samuel P. Benz
We present the first jitter sensitivity analysis of a superconducting voltage reference waveform synthesizer with fundamentally accurate output pulses. Successful deployment of a reference waveform source at microwave frequencies will represent a new

Precision Optical Antenna Alignment System for Tracking Antennas in 6-DOF

November 4, 2018
Author(s)
Joshua A. Gordon, David R. Novotny, Michael S. Allman
We present on an all-optical spatial metrology system, the PiCMM, that aids in the alignment and tracking of antennas with accuracies on the order of 25 microns and 0.01 deg. This system speeds up millimeter-wave antenna alignment, does not require contact

PSCR 2017 Stakeholder Conference Presentation Materials -- Day 1

October 16, 2018
Author(s)
Jeremy E. Benson, Jeff Johnson, Eric W. Anderson, Carol Politi, TRX Systems, Inc., Anthony Rowe, A Shkel, Chenji Harsha, Nancy French, Murat Yuskel, Benjamin J. Posthuma, Margaret Pinson, Dereck R. Orr
This document is a compilation of the slides presented during Day 3 of the 2017 Public Safety Communications Research Program's (PSCR) Annual Stakeholder Conference. Day 3 topics include PSCR research plans and results for Location-Based Services

PSCR 2017 Stakeholder Conference Presentation Materials -- Day 2

October 16, 2018
Author(s)
Jason D. Kahn, Anthony Trevino, San Antonio Police Dept, Heather M. Evans, Joe Fournier, Canada's Centre for Security Science, David Lund, Public Safety Communication Europe Forum, Gordon Shipley, UK Home Office Emergency Service Mobile Communications Programme, Dereck R. Orr, Jeff Bratcher, Rich Reed, Salim Patel, AT&T Technology Architecture Planning, Ryan Felts, Marc Leh, Mary F. Theofanos, Kristen Greene
This document is a compilation of the slides presented during Day 2 of the 2017 Public Safety Communications Research Program's (PSCR) Annual Stakeholder Conference. Day 2 topics include PSCR research plans and results for Crowdsourcing Open Innovation

On-Wafer Transistor Characterization to 750 GHz -the approach, results, and pitfalls

October 14, 2018
Author(s)
Dylan Williams, Jerome Cheron, Ben Jamroz, Richard Chamberlin
We review approaches developed at the National Institute of Standards and Technology for on-wafer transistor characterization and model extraction at sub-millimeter-wave wavelengths, and compare them to more common approaches developed for use at lower

Sub-nanosecond Tuning of Microwave Resonators Fabricated on Ruddlesden-Popper Dielectric Thin Films

July 9, 2018
Author(s)
Aaron M. Hagerstrom, Xifeng Lu, Natalie Dawley, H. Nair, Jordi Mateu, Robert D. Horansky, Charles A. Little, James C. Booth, Christian J. Long
Voltage-tunable dielectric materials are widely used for microwave-frequency signal processing. Among tunable dielectric thin films, (SrTiO3)nSrO Ruddlesden-Popper (RP) superlattices have exceptionally low loss at high frequencies. This paper reports the

Impact of Phase Calibration on EVM Measurement Quality

June 14, 2018
Author(s)
Diogo Ribeiro, Dylan Williams, Richard Chamberlin, Nuno B. Carvalho
In this paper, the calibrated measurement of wideband modulated signals by mixer-based large-signal network analyzers (LSNAs) will be evaluated, with a focus on the impact of the phase calibration in the measured error vector magnitude (EVM). The

Measuring Ion-Pairing in Buffer Solutions with Microwave Microfluidics

June 14, 2018
Author(s)
Angela C. Stelson, Charles A. Little, Nathan D. Orloff, Christian J. Long, James C. Booth
Microwave microfluidics is an emergent technique for characterizing conductivity and permittivity of fluids and has wide-ranging applications in the materials science and biomedical fields. The electrical properties of fluids as a function of frequency can

A Framework to Enable Multiple Coexisting Internet of Things Applications

March 1, 2018
Author(s)
Wei Yu, Hanlin Zhang, Yalong Wu, David W. Griffith, Nada T. Golmie
Internet of Things (IoT) uses modern information communication technologies to connect massive numbers of objects and support numerous smart critical infrastructure applications (smart grid, smart cites, etc.). To meet the diverse performance requirements

Increasing Public Safety Broadband Network Resiliency Through Traffic Control

February 1, 2018
Author(s)
Richard A. Rouil, Wesley D. Garey, Camillo A. Gentile, Nada T. Golmie
Long Term Evolution (LTE)-based cellular networks are being deployed around the world to provide public safety with enhanced capabilities and access to broadband technology. In the United States, the First Responder Network Authority (FirstNet) is on the
Displaying 301 - 325 of 1414
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