NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.
Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.
An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Joshua Kast, Paritosh Manurkar, Catherine Remley, Dylan Williams, Robert Horansky
We describe the system-level calibration of a vector signal analyzer operating in the 28 GHz frequency band, including the determination of uncertainties in the magnitude and phase of measurements of a traceably characterized calibration waveform. We then
This work provides recommendations for best practices that enable simplified, cost-effective interference testing that incorporates relevant aspects of realistic cellular emissions. Experimental impacts from three broad classes of interference waveforms
Counterfeit semiconductor devices are a major economic and security threat that can cause losses in multiple economic sectors. This problem's impact on national security is serious and growing because every part of the country, such as the military
The objective of this paper is to study the radar imaging of a commercial drone (DJI Phantom III) in an artificial urban environment. A 10-GHz frequency modulated continuous wave (FMCW) synthetic aperture radar (SAR) imaging system with a 1.5-GHz bandwidth
Jack Chuang, Raied Caromi, Jelena Senic, Samuel Berweger, Neeraj Varshney, Jian Wang, Anuraag Bodi, Camillo Gentile, Nada Golmie
We describe a quasi-determinstic channel propagation model for human gesture recognition reduced from real-time measurements with our context aware channel sounder, considering four human subjects and 20 distinct body motions, for a total of 120,000
Howard Dai, Jack Chuang, Jian Wang, Samuel Berweger, David Griffith
Multipath component (MPC) extraction is critical for channel modeling and joint communications and sensing (JCAS). Super-resolution algorithm known as CLEAN-Space-Alternating Generalized Expectation (CLEAN-SAGE) is widely used for MPC extraction. Because
Anuraag Bodi, Jihoon Bang, Neeraj Varshney, Samuel Berweger, Chiehping Lai, Jelena Senic, Jack Chuang, Camillo Gentile
Clustering radio-frequency (RF) multipath components (MPCs) fosters compact channel models by capturing the geometry of the scattering environment, yet "blind" methods based solely on RF data struggle to associate MPCs with individual scatterers. We
Industrial wireless channels differ significantly from home and office channels due to factors like larger distances, existence of heavy machinery, and composition of surroundings. Industrial environments can vary significantly in their physical
Lilia Hannachi, Kotikalapudi Sriram, Douglas Montgomery
This study focuses on the analysis of propagation of Regular, Extended, and Large Communities in the Border Gateway Protocol (BGP). Once added, these communities are often intended to be transitive by default, meaning that they should be propagated from
Camillo Gentile, Jack Chuang, Steve Blandino, Jelena Senic, Jihoon Bang, Samuel Berweger
This paper presents a methodology for measuring the radar cross-section (RCS) of a target that scatters power from multiple points on its surface, in the context of joint communication and sensing (JCAS). By leveraging the fine resolution of millimeter
Yuyin Song, Davide Pesavento, Thomas Roth, Tyler Wong
Autonomous vehicles (AVs) can perform driving tasks without any human intervention, relying on advanced technologies to sense their surroundings, exchange information with digital road-side infrastructure, make decisions, and control the vehicle. AVs use
Many engineers use analysis tools to predict behavior or find optimal values for properties of systems built to proposed designs, informing system design work by identifying cases where a design will perform incorrectly or in suboptimal ways. Design and
Florian Bergmann, Meagan Papac, Benjamin Jamroz, Nicholas Jungwirth, Bryan Bosworth, Anna Osella, Tomasz Karpisz, Lucas Enright, Eric Marksz, Angela Stelson, Christian Long, Nathan Orloff, Robert Jones
Modern microchips utilize multilayer stack-ups with many interstitial layers of dielectrics. Optimizing device performance and maximizing yield requires precise measurements of the out-of-plane permittivity of these dielectric layers. At the same time
Rudolph Semper, Jack Chuang, Samuel Berweger, Camillo Gentile
Switched phased array systems operating at high sample rates generate large amounts of data during measurements of radio channels, but many scenarios contain only few multipath components. Compressed Sensing suggests in these cases Nyquist-rate samples are
Due to the increasing demand for wireless services, the IEEE 802.11ax WLAN standard was released to enable improved performance, coverage, and spectrum efficiency. Given these advantages, its use has become more widespread in recent years, but measurements
Amar Abane, Michael Cubeddu, Van Sy Mai, Abdella Battou
Entanglement routing in near-term quantum networks consists of choosing the optimal sequence of local entanglements to combine through swapping operations to establish end-to-end entanglement between two distant nodes on a quantum network. Similar to
Industrial Wireless system performance can be degraded by various factors (aggressors) found in operational environments. Non-communications electromagnetic aggressors are defined as any over-the-air emissions that lower communications performance of the
William Groman, Igor Kudelin, Takuma Nakamura, Yifan Liu, Charles McLemore, Franklyn Quinlan, Scott Diddams, Dahyeon Lee, Megan Kelleher, Joel Guo, Warren Jin, John Bowers
With the next generation of telecommunications and radar/navigation upon us, moving from the microwave to the higher bandwidth, millimeter-wave domain has become ever relevant. Simultaneously, the burgeoning field of photonic integrated chips has yielded a
Jihoon Bang, Samuel Berweger, Jack Chuang, Camillo Gentile, Nada Golmie, Sebastian Semper
We have developed a real-time 141 GHz joint communications and sensing (JCAS) channel sounder, with focus on this article on 3-D near-field imaging (less than 50 cm range) for applications such as finger recognition. To achieve this, we integrated phased
The Global Positioning System (GPS) is the most prevalent Global Navigation Satellite System (GNSS) that provides Position, Navigation, and Timing (PNT). GNSS vulnerability is well-known, and the search continues to find another independent system that can
Anish Shastri, Steve Blandino, Camillo Gentile, Chiehping Lai, Paolo Casari
The quasi-optical propagation of mmw signals has been instrumental in designing high-accuracy localization algorithms. These algorithms either exploit the geometric properties of the mmw signals or are based on an environment's radio footprints, leading to
The growing demand for wireless communications has caused significant spectrum congestion, requiring multiple WLAN protocols to share limited spectrum resources. To address this, further research is necessary to optimize spectrum sharing and improve
Due to the increasing demand for spectrum to support unlicensed technologies, the 6 GHz band was opened for unlicensed use in the United States in 2020. Wireless Local Area Networks (WLANs) are already operating in this band and the upcoming 5G New-Radio