Works (37)

Updated: July 5th, 2023 16:03

2015 journal article

A Five-Parameter Model of the AlGaN/GaN HFET

IEEE TRANSACTIONS ON ELECTRON DEVICES, 62(4), 1157–1162.

By: G. Bilbro n & R. Trew n

author keywords: AlGaN/GaN; analytic; compact model; continuously differentiable; dc; HEMT; heterojunction field-effect transistor (HFET); physical; physics based; RF
Source: Web Of Science
Added: August 6, 2018

2014 journal article

Modeling of the Gate Leakage Current in AlGaN/GaN HFETs

IEEE TRANSACTIONS ON ELECTRON DEVICES, 61(4), 1014–1021.

By: A. Goswami n, R. Trew n & G. Bilbro n

author keywords: AlGaN/GaN heterojunction field effect transistors (HFETs); gate leakage; HEMTs; semiconductor device reliability
Source: Web Of Science
Added: August 6, 2018

2014 journal article

Physics of gate leakage current in N-polar InAlN/GaN heterojunction field effect transistors

JOURNAL OF APPLIED PHYSICS, 116(16).

By: A. Goswami n, R. Trew n & G. Bilbro n

Source: Web Of Science
Added: August 6, 2018

2013 journal article

A Compact Physical AlGaN/GaN HFET Model

IEEE TRANSACTIONS ON ELECTRON DEVICES, 60(2), 639–645.

By: D. Hou n, G. Bilbro n & R. Trew n

author keywords: AlGaN/GaN heterojunction field-effect transistor (FET) (HFET) models; HFET compact models; nitride-based HFETs
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2013 journal article

Physics based modeling of gate leakage current due to traps in AlGaN/GaN HFETs

SOLID-STATE ELECTRONICS, 80, 23–27.

By: A. Goswami*, R. Trew* & G. Bilbro*

author keywords: AlGaN/GaN HFET reliability; Gate leakage; HEMTs; Semiconductor device modeling
Source: Web Of Science
Added: August 6, 2018

2012 journal article

A Simplified Physical Model of RF Channel Breakdown in AlGaN/GaN HFETs

IEEE TRANSACTIONS ON ELECTRON DEVICES, 59(11), 2973–2978.

By: R. Schimizzi n, R. Trew n & G. Bilbro n

author keywords: Avalanche breakdown; impact ionization; microwave FET amplifiers; semiconductor device modeling
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2012 conference paper

Large-signal FET Models and a New AlGaN/GaN HFET model for power amplifier design

2012 IEEE International Conference on Wireless Information Technology and Systems (ICWITS).

By: R. Trew n, D. Hou n, R. Schimizzi n, A. Goswami n & G. Bilbro n

Source: NC State University Libraries
Added: August 6, 2018

2009 article

Predicting the performance of a power amplifier using large-signal circuit simulations of an AlGaN/GaN HFET model

GALLIUM NITRIDE MATERIALS AND DEVICES IV, Vol. 7216.

By: G. Bilbro n, D. Hou n, H. Yin* & R. Trew n

author keywords: GaN; HFET; HEMT; modeling; microwave; large-signal; simulation
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2009 journal article

Theory of space charge limited regime of thermionic energy converter with negative electron affinity emitter

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, 27(3), 1132–1141.

By: J. Smith*, G. Bilbro n & R. Nemanich*

author keywords: diamond; nitrogen; Poisson equation; space-charge-limited conduction; thermionic conversion; thermionic electron emission; Vlasov equation
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2007 journal article

Considerations for a high-performance thermionic energy conversion device based on a negative electron affinity emitter

PHYSICAL REVIEW B, 76(24).

By: J. Smith n, G. Bilbro n & R. Nemanich*

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2006 journal article

Localized emission from flat diamond cathodes

DIAMOND AND RELATED MATERIALS, 15(9), 1418–1423.

By: G. Bilbro* & R. Nemanich*

author keywords: negative electron affinity; nonuniform electron emission; emission sites; cold cathode; Lagrangian; drift diffusion
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2006 journal article

Nonlinear source resistance in high-voltage microwave AlGaN/GaN HFETs

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 54(5), 2061–2067.

By: R. Trew n, Y. Liu n, G. Bilbro n, W. Kuang n, R. Vetury* & J. Shealy*

author keywords: AlGaN/GaN heterostructure field-effect transistors (HFETs); GaN; large-signal operation; nonlinear source resistance
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2006 journal article

RF knee walkout and source access region of unpassivated HFETs

Electronics Letters, 42(24), 1425–1427.

By: G. Bilbro n & R. Trew n

Source: NC State University Libraries
Added: August 6, 2018

2006 article

The effect of Schottky barrier lowering and nonplanar emitter geometry on the performance of a thermionic energy converter

DIAMOND AND RELATED MATERIALS, Vol. 15, pp. 870–874.

By: J. Smith n, R. Nemanich n & G. Bilbro n

author keywords: diamond properties and applications; thermionic energy conversion; Schottky barrier lowering; field enhancement
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2006 article

Using negative electron affinity diamond emitters to mitigate space charge in vacuum thermionic energy conversion device

DIAMOND AND RELATED MATERIALS, Vol. 15, pp. 2082–2085.

By: J. Smith n, G. Bilbro n & R. Nemanich n

author keywords: diamond crystal; negative electron affinity; device modeling; thermionic energy conversion
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2005 journal article

In situ selectivity and thickness monitoring during selective silicon epitaxy using quadrupole mass spectrometry and wavelets

IEEE TRANSACTIONS ON SEMICONDUCTOR MANUFACTURING, 18(1), 112–121.

By: E. Rying, M. Ozturk n, G. Bilbro n & J. Lu*

author keywords: edge detection; in situ selectivity loss detection; rapid thermal chemical-vapor deposition; selective silicon epitaxy; wavelet transform modulus maxima
Source: Web Of Science
Added: August 6, 2018

2005 journal article

Microwave AlGaN/GaN HFEVs

IEEE MICROWAVE MAGAZINE, 6(1), 56–66.

By: R. Trew n, G. Bilbro n, W. Kuang n, Y. Liu n & H. Yin n

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2005 journal article

Sample-sort simulated annealing

IEEE TRANSACTIONS ON SYSTEMS MAN AND CYBERNETICS PART B-CYBERNETICS, 35(3), 625–632.

By: D. Thompson* & G. Bilbro n

author keywords: optimization methods; parallel algorithm; simulated annealing (SA)
MeSH headings : Algorithms; Artificial Intelligence; Cluster Analysis; Information Storage and Retrieval / methods; Models, Biological; Models, Statistical; Numerical Analysis, Computer-Assisted; Pattern Recognition, Automated / methods; Reproducibility of Results; Sample Size; Sensitivity and Specificity; Signal Processing, Computer-Assisted
TL;DR: A simulated annealing algorithm called Sample-Sort that is artificially extended across an array of samplers that was compared to SA by applying both to a set of global optimization problems and found to be comparable if the number of iterations per sampler was sufficient. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

2002 journal article

Demosaicking methods for Bayer color arrays

JOURNAL OF ELECTRONIC IMAGING, 11(3), 306–315.

By: R. Ramanath n, W. Snyder n, G. Bilbro n & W. Sander*

TL;DR: This paper introduces and compares a few commonly used demosaicking methods using error metrics like mean squared error in the RGB color space and perceivederror in the CIELAB color space. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

2002 journal article

Focused local learning with wavelet neural networks

IEEE TRANSACTIONS ON NEURAL NETWORKS, 13(2), 304–319.

By: E. Rying n, G. Bilbro n & J. Lu*

author keywords: local error; objective function; wavelets
TL;DR: Simulation results demonstrate the effectiveness of these methodologies in minimizing local and global error while maintaining model parsimony and incurring a minimal increase on computational complexity. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2002 journal article

Theory of electrodeposition of diamond nanoparticles

DIAMOND AND RELATED MATERIALS, 11(8), 1572–1577.

By: G. Bilbro n

author keywords: nanodiamond; nanoparticle; electrophoresis; equilibrium
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2002 journal article

Theory of nanotip formation

Journal of Vacuum Science & Technology. B, Microelectronics and Nanometer Structures, 20(3), 757–761.

By: G. Bilbro

Source: NC State University Libraries
Added: August 6, 2018

2000 journal article

Comparison of a genetic algorithm with a simulated annealing algorithm for the design of an ATM network

IEEE COMMUNICATIONS LETTERS, 4(8), 267–269.

By: D. Thompson* & G. Bilbro n

author keywords: asynchronous transfer mode; genetic algorithm; networks; simulated annealing; topology
TL;DR: The genetic algorithm (GA) and simulated annealing algorithm (SA) are empirically compared for the problem of optimizing the topological design of a network using a real set of concentrators, links, and traffic. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

2000 patent

Integrated circuits having cooperative ring oscillator clock circuits therein to minimize clock skew

Washington, DC: U.S. Patent and Trademark Office.

By: L. Hall, S. Clements, W. Liu & G. Bilbro

Source: NC State University Libraries
Added: August 6, 2018

2000 journal article

Nongeometric field enhancement in semiconducting cold cathodes and in metal-insulator-semiconductor structures

APPLIED PHYSICS LETTERS, 76(7), 891–893.

By: G. Bilbro n & R. Nemanich n

UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

2000 patent

Systems and methods for using diffraction patterns to determine radiation intensity values for areas between and along adjacent sensors of compound sensor arrays

Washington, DC: U.S. Patent and Trademark Office.

By: G. Bilbro, W. Snyder & A. Zilic

Source: NC State University Libraries
Added: August 6, 2018

1999 patent

Compound image sensor array having staggered array of tapered optical fiber bundles

Washington, DC: U.S. Patent and Trademark Office.

By: G. Bilbro, W. Snyder & A. Zilic

Source: NC State University Libraries
Added: August 6, 2018

1999 journal article

Convolution, deconvolution, and mean field annealing suitable for analog VLSI

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-ANALOG AND DIGITAL SIGNAL PROCESSING, 46(2), 120–128.

By: G. Bilbro*, L. Hall*, M. Clements* & W. Liu*

author keywords: analog VLSI; CMOS image acquisition; deconvolution; image processing; MAP estimation; nonlinear Bayesian processing; piecewise smooth restoration; real-time; regularization
TL;DR: Several standard digital image processing operations are formulated as circuits suitable for implementation in real-time analog VLSI, including nonlinear piecewise-constant image restoration using mean field annealing as a global optimization technique, and the results of realizing deconvolution on a printed circuit board are reported. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

1999 journal article

Phase balancing using simulated annealing

IEEE TRANSACTIONS ON POWER SYSTEMS, 14(4), 1508–1513.

By: J. Zhu*, G. Bilbro n & M. Chow n

author keywords: phase balancing optimization; feeder reconfiguration; phase swapping; power quality; deregulation; simulated annealing (SA); candidate set
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

1999 journal article

Simulation of room temperature thermionic emission from AlxGa1- xN negative electron affinity cathodes

Journal of Vacuum Science & Technology. B, Microelectronics and Nanometer Structures, 17(2), 552–556.

By: C. Hatfield & G. Bilbro

Source: NC State University Libraries
Added: August 6, 2018

1999 journal article

Simulation of thermionic emission from aluminum gallium nitride cathodes at elevated temperatures

Journal of Vacuum Science & Technology. B, Microelectronics and Nanometer Structures, 17(5), 1987–1992.

By: C. Hatfield & G. Bilbro

Source: NC State University Libraries
Added: August 6, 2018

1998 journal article

Call admission control schemes and ATM network topological design

EUROPEAN JOURNAL OF OPERATIONAL RESEARCH, 111(2), 393–404.

By: S. Lo n, B. Makrucki n, G. Bilbro n & S. Elmaghraby n

author keywords: ATM network topological design; call admission control; integer programming; mixed integer programming
TL;DR: The differences between the pair of resulting networks suggests that network topological design can be used as one of the criteria for choosing the call admission control scheme. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

1998 journal article

DC I-V characteristics and RF performance of a 4H-SiC JFET at 773 K

IEEE TRANSACTIONS ON ELECTRON DEVICES, 45(9), 2072–2074.

By: C. Hatfield n, G. Bilbro n, S. Allen* & J. Palmour*

author keywords: DC I-V characteristics; high temperature; JFET; RF performance; RF power; silicon carbide (SiC)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (Web of Science; OpenAlex)
Source: Web Of Science
Added: August 6, 2018

1998 journal article

Discontinuity-preserving vector smoothing of multivariate MR images using vector mean field annealing

JOURNAL OF MATHEMATICAL IMAGING AND VISION, 9(3), 199–212.

By: Y. Han n, W. Snyder n & G. Bilbro n

author keywords: magnetic resonance images (MRI); shading artifacts; piecewise constant image restoration; Bayesian image restoration; mean field annealing (MFA); multivariate images; vector-valued images; magnitude; ratio; angle
TL;DR: Mean Field Annealing (MFA) is used to find restorations that are superior to those obtained by previous multivariate approaches when shading artifacts near the MRI antenna are significant. (via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

1998 journal article

Left-ventricle boundary detection from nuclear medicine images

JOURNAL OF DIGITAL IMAGING, 11(1), 10–20.

By: X. Dai n, W. Snyder n, G. Bilbro n, R. Williams n & R. Cowan n

author keywords: cardiac nuclear medicine; ejection fraction; image segmentation; left ventricle; boundary detection; automated
MeSH headings : Heart Ventricles / diagnostic imaging; Humans; Image Processing, Computer-Assisted; Radionuclide Imaging; Stroke Volume; Ventricular Function, Left
TL;DR: A new algorithm for segmentation of nuclear medicine images to detect the left-ventricle (LV) boundary that seems to perform quite well in comparison to other automated methods that have been tested because of its ability to handle the problems of both low signal-to-noise ratios (SNR) as well as low image contrast. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

1998 journal article

Performance evaluation of filtered backprojection reconstruction and iterative reconstruction methods for PET images

COMPUTERS IN BIOLOGY AND MEDICINE, 28(1), 13–25.

By: C. Wang, W. Snyder*, G. Bilbro* & P. Santago

author keywords: image reconstruction; performance evaluation; PET imaging; bias and variance; mean square error
MeSH headings : Algorithms; Artifacts; Bias; Humans; Image Enhancement / instrumentation; Image Processing, Computer-Assisted / instrumentation; Phantoms, Imaging; Tomography, Emission-Computed / instrumentation
TL;DR: The experiment showed that the MAP algorithm generated superior image quality in terms of the bias, the variance, and the average mean squared error (MSE) measures. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Source: Web Of Science
Added: August 6, 2018

1997 journal article

Performance of local power control in peer-to-peer impulse radio networks with bursty traffic

TR (Center for Advanced Computing and Communication), (5).

By: S. Kolenchery, J. Townsend & G. Bilbro

Source: NC State University Libraries
Added: August 6, 2018

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