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Search Publications by

Aric Sanders (Assoc)

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Displaying 1 - 25 of 51

Laboratory Method for Recording AWS-3 LTE Waveforms

May 11, 2021
Aric Sanders, Keith Forsyth, Rob Horansky, Azizollah Kord, Duncan McGillivray
The focus of this work provides a library of actual long-term evolution (LTE) user equipment (UE) emissions with sufficient time resolution and dynamic range for use in spectrum sharing, and interference susceptibility studies. National Advanced Spectrum

Characterizing LTE User Equipment Emissions Under Closed-Loop Power Control

April 6, 2021
Jason Coder, Aric Sanders, Michael R. Frey, Adam Wunderlich, Azizollah Kord, Jolene Splett, Lucas N. Koepke, Daniel Kuester, Duncan McGillivray, John M. Ladbury
This report presents a laboratory-based characterization of Long Term Evolution (LTE) User Equipment (UE) emissions under closed-loop power control, building on our prior work (NIST TN 2069), which assessed the impact of a large number of factors affecting

AWS-3 LTE Impacts on Aeronautical Mobile Telemetry

February 25, 2021
William F. Young, Duncan McGillivray, Adam Wunderlich, Mark Krangle, Jack Sklar, Aric Sanders, Keith Forsyth, Mark A. Lofquist, Dan Kuester
This technical report details an effort to design, demonstrate, and validate a test methodology to measure the impacts of Long Term Evolution (LTE) User Equipment (UE) emissions in the advanced wireless services 3 (AWS-3) band on aeronautical mobile

Characterizing LTE User Equipment Emissions: Factor Screening

September 30, 2019
Jason Coder, Adam Wunderlich, Michael R. Frey, Paul T. Blanchard, Dan Kuester, Azizollah Kord, Max Lees, Aric Sanders, Jolene Splett, Lucas N. Koepke, Rob Horansky, Duncan McGillivray, John M. Ladbury, Jeffrey T. Correia, Venkatesh Ramaswamy, Jerediah Fevold, Shawn Lefebre, Jacob K. Johnson, John Carpenter, Mark Lofquist, Keith Hartley, Melissa Midzor
Characterizations of long-term evolution (LTE) user equipment (UE) emissions are a key ingredient in models of interference between wireless cellular networks and other systems that must use the same radio frequency spectrum. This report presents (i) a

Machine Learning in a Quality Managed RF Measurement Workflow

July 7, 2019
Aric W. Sanders, John Bass, Arpita Bhutani, Mary A. Ho, James C. Booth
Advances in artificial intelligence, or more specifically machine learning, have made it possible for computers to recognize patterns as well or better than humans. The process of quality management in radio-frequency measurements is an arduous one that

Large-Signal-Network-Analyzer Phase Calibration on an Arbitrary Grid

May 1, 2019
Aric W. Sanders, Dylan F. Williams, Joshua M. Kast, Catherine A. Remley, Robert D. Horansky
We have developed a method for improving the synchronization of large-signal network analyzers and transferring “cross-frequency” phase calibrations from a calibrated sampling oscilloscope to the large-signal vector network analyzer on an arbitrary

Qualitative Multidimensional Calibration Comparison

January 15, 2018
Aric W. Sanders, Ronald A. Ginley, Christian J. Long, Jasper A. Drisko, Nathan D. Orloff, Richard A. Chamberlin
We present a technique for the visual comparison of any two vector network analyzer calibrations. This method visualizes the comparative action of the calibrations for multiple complex scattering parameters relative to the calibrated measurement plane

Polarity-Controlled GaN/AlN Nucleation Layers for Selective-Area Growth of GaN Nanowire Arrays on Si(111) Substrates by Molecular Beam Epitaxy

December 18, 2015
Matthew D. Brubaker, Shannon M. Duff, Todd E. Harvey, Paul T. Blanchard, Alexana Roshko, Aric W. Sanders, Norman A. Sanford, Kristine A. Bertness
We have demonstrated dramatic improvement in the quality of selective-area GaN nanowire growth by controlling the polarity of the underlying nucleation layers. In particular, we find that N- polarity is beneficial for the growth of large ordered nanowire

Gold Nanoparticle Quantitation by Whole Cell Tomography

November 13, 2015
Aric W. Sanders, Kavita M. Jeerage, Cindi Schwartz, Alexandra Curtin, Ann C. Chiaramonti Debay
Many proposed biomedical applications for engineered gold nanoparticles require their incorporation by mammalian cells in specific numbers and locations. Here, the number of gold nanoparticles inside of individual mammalian stem cells was characterized

Localization and Number of Au Nanoparticles in Optically Indexed Cells by FIB Tomography

August 2, 2015
Aric W. Sanders, Kavita M. Jeerage, Ann C. Chiaramonti Debay, Alexandra Curtin
Gold nanoparticles (GNPs) are gaining importance as therapeutic chemical delivery vehicles, medical diagnostic tools, phototherapeutic and contrast enhancement agents. GNPs are uniquely suited for these biological uses because of their chemical stability

Citrate-stabilized gold nanoparticles do not impact neural progenitor cell development

January 5, 2015
Kavita M. Jeerage, Tammy L. Oreskovic, Alexandra Curtin, Aric W. Sanders, Rani K. Schwindt, Ann C. Chiaramonti Debay
Gold nanoparticles are promising candidates for medical diagnostics and therapeutics, due to their chemical stability, optical properties, and ease of functionalization. Citrate-stabilized gold nanoparticle reference materials also have potential as

Biomass Particle Models with Realistic Morphology and Resolved Microstructure for Simulations of Intraparticle Transport Phenomena

December 9, 2014
Peter Ciesielski, Michael F. Crowley, M R. Nimlos, Aric Sanders, Gavin Wiggins, Bryon Donohoe
Biomass exhibits a complex microstructure of directional pores that can vary substantially between species of origin. However, models of biomass particles employed in simulations of conversion processes typically employ over-simplified geometry such as

Junction Yield Analysis for 10 V Programmable Josephson Voltage Standard Devices

December 5, 2014
Anna E. Fox, Paul D. Dresselhaus, Alain Rufenacht, Aric W. Sanders, Samuel P. Benz
Analysis of the Josephson junction yield in the National Institute of Standards and Technology 10 V Programmable Josephson Voltage Standard (PJVS) has been performed by fabricating and measuring over 25 million Nb/NbxSi1-x/Nb junctions. Using the 265,116

GaN nanowire coated with atomic layer deposition of tungsten: a probe for near-field scanning microwave microscopy

September 26, 2014
Joel C. Weber, Paul T. Blanchard, Aric W. Sanders, Jonas Gertsch, Steven George, Samuel Berweger, Atif A. Imtiaz, Thomas M. Wallis, Kristine A. Bertness, Pavel Kabos, Norman A. Sanford, victor bright
We report on the fabrication of a GaN nanowire probe for near-field scanning microwave microscopy. The probe has a capacitive resolution of ~0.03 fF, surpassing that of a commercial Pt tip. Imaging of MoS2 sheets found the probe to be immune to surface

Selective Area Growth of Ga- and N-polar GaN Nanowire Arrays on Non-Polar Si (111) Substrates

September 7, 2014
Matthew D. Brubaker, Shannon M. Duff, Todd E. Harvey, Paul T. Blanchard, Alexana Roshko, Aric W. Sanders, Norman A. Sanford
This study presents a technique for obtaining Ga- and N-polar Gallium Nitride nanowire (GaN NW) arrays on non-polar Si (111) substrates by use of polarity-controlled AlN/GaN buffer layers. AlN films are demonstrated to adopt Al-/N-polarity for N-/Al-rich

Optimization of Focused Ion Beam-Tomography for Superconducting Electronics

August 27, 2014
Aric W. Sanders, Anna E. Fox, Paul D. Dresselhaus, Alexandra Curtin
Superconducting electronics play an important role in quantum computation, ultra-low power electronics, voltage standards and magnetic sensors. Many of these applications rely on the microfabrication of superconducting circuits with multiple wiring layers