Papers and Patents
Latest Research
- Gravitational Theory
- PDF file :
Thomas P. Weldon,
``Theoretical and observed quality factor of gravitational quadrupoles,''
in Phys. Rev. D,
vol. 98, p. 124044, Dec. 2018. APS weblink.
(APS allows the PDF from the online journal without revision or modification,
on the author's or employer's website as long as a fee is not charged"
see APS policy)
- Gravitational Metamaterials
- PDF Preprint:
Thomas P. Weldon, Christopher G. Daniel Jr., and Kathryn L. Smith,
``Gravitomagnetic Dipole Moment of Gravitational Unit Cells,''
in 14th International Congress on Artificial Materials for Novel Wave Phenomena - Metamaterials 2020 ,
NY, NY (online), Sep. 28 - OCT 3, 2020. IEEE weblink.
- PDF preprint::
Thomas P. Weldon and Kathryn L. Smith,
"Gravitationally-Small Gravitational Antennas, the Chu Limit, and
Exploration of Veselago-Inspired Notions of Gravitational
Metamaterials,"
in 13th International Congress on Artificial Materials for Novel Wave Phenomena - Metamaterials 2019 ,
Rome, Italy, Sep. 16-21, 2019.
- Digital Impedances and Digital Non-Foster Impedances
- Open Source PDF :
Christopher G. Daniel, Jr. and Thomas P. Weldon,
``A Stable Digital Impedance Circuit Design Method for Resistive Source Impedances,''
in IEEE Open Journal of Circuits and Systems,
vol. 3, pp. 109-114, 2022, doi: 10.1109/OJCAS.2022.3174694.
IEEE weblink.
- PDF Preprint:
Thomas P. Weldon,
``A Digital Non-Foster VHF Radio Approach for Enabling Low-Power Internet of Things,''
in
2020 IEEE International Symposium on Circuits and Systems (ISCAS 2020), ,
Seville, Spain, Oct. 11-14, 2020. IEEE weblink.
- PDF Preprint:
Kristy A. Hecht, Christopher G. Daniel Jr., and Thomas P. Weldon,
``Effect of External Source Impedance on the Input Impedance of Digital Impedance Circuits,''
in
2020 IEEE International Symposium on Circuits and Systems (ISCAS 2020), ,
Seville, Spain, Oct. 11-14, 2020. IEEE weblink.
Refereed Papers
- Open Source PDF :
Christopher G. Daniel, Jr. and Thomas P. Weldon,
``A Stable Digital Impedance Circuit Design Method for Resistive Source Impedances,''
in IEEE Open Journal of Circuits and Systems,
vol. 3, pp. 109-114, 2022, doi: 10.1109/OJCAS.2022.3174694.
IEEE weblink.
- PDF Preprint:
Thomas P. Weldon, Christopher G. Daniel Jr., and Kathryn L. Smith,
``Gravitomagnetic Dipole Moment of Gravitational Unit Cells,''
in 14th International Congress on Artificial Materials for Novel Wave Phenomena - Metamaterials 2020 ,
NY, NY (online), Sep. 28 - OCT 3, 2020. IEEE weblink.
- PDF Preprint:
Thomas P. Weldon,
``A Digital Non-Foster VHF Radio Approach for Enabling Low-Power Internet of Things,''
in
2020 IEEE International Symposium on Circuits and Systems (ISCAS 2020), ,
Seville, Spain, Oct. 11-14, 2020. IEEE weblink.
- PDF Preprint:
Kristy A. Hecht, Christopher G. Daniel Jr., and Thomas P. Weldon,
``Effect of External Source Impedance on the Input Impedance of Digital Impedance Circuits,''
in
2020 IEEE International Symposium on Circuits and Systems (ISCAS 2020), ,
Seville, Spain, Oct. 11-14, 2020. IEEE weblink.
- PDF preprint:
Thomas P. Weldon and Kathryn L. Smith,
"Gravitationally-Small Gravitational Antennas, the Chu Limit, and
Exploration of Veselago-Inspired Notions of Gravitational
Metamaterials,"
in 13th International Congress on Artificial Materials for Novel Wave Phenomena - Metamaterials 2019 ,
Rome, Italy, Sep. 16-21, 2019.
- PDF preprint:
Thomas P. Weldon and Kathryn L. Smith,
"Comparison of Electromagnetic Antenna Chu Limit and Q of Gravitational Radiators,"
in International Conference on Electromagnetics in Advanced Applications (ICEAA 2019),
Granada, Spain, Sep. 9-13, 2019.
- PDF preprint:
Kathryn L. Smith and Thomas P. Weldon,
"Electromagnetic Education Module: Introductory Transmission Line Simulation and Experiment,"
in International Conference on Electromagnetics in Advanced Applications (ICEAA 2019),
Granada, Spain, Sep. 9-13, 2019.
- PDF published in online proceedings:
Thomas P. Weldon and Kathryn L. Smith,
"Much Ado About Nothing: Applying a Metamaterial Model with Negative Energy to Address the Vacuum Catastrophe,"
in META 2019, the 10th International Conference on Metamaterials, Photonic Crystals and Plasmonics,
Lisbon, Portugal, July 23-26, 2019.
- PDF preprint:
Christopher G. Daniel Jr., Kathryn L. Smith, and Thomas P. Weldon,
"Observed Q and Gravitationally-Small Antenna Behavior of a Binary Black Hole Radiator,"
in 2019 IEEE International Symposium on Antennas and Propagation (APSURSI),,
Atlanta, GA, July 7-12, 2019.
- PDF preprint:
Vinit A. Katariya and Thomas P. Weldon,
"Search-Based Design of Digital Non-Foster Antenna Match for High-Speed Low-Impedance Converters,"
in 2019 IEEE International Symposium on Antennas and Propagation (APSURSI), ,
Atlanta, GA, July 7-12, 2019.
- this PDF is © American Physical Society. (https://www.aps.org/) :
Thomas P. Weldon,
``Theoretical and observed quality factor of gravitational quadrupoles,''
in Phys. Rev. D,
vol. 98, p. 124044, Dec. 2018. APS weblink.
("Yes, the author or the author's employer
may use all or part of the APS published article, including the APS-prepared version
(e.g., the PDF from the online journal) without revision or modification,
on the author's or employer's website as long as a fee is not charged.")
- PDF preprint:
Thomas P. Weldon,
``Use of a Digital Non-Foster Radio Architecture for Conventional Tuning of Electrically-Small Antennas,''
in 2018
IEEE International Symposium on Antennas and Propagation and
USNC-URSI National Radio Science Meeting,
Boston, MA, July 8-13, 2018. IEEEweblink to paper.
- PDF preprint:
Thomas P. Weldon,
``Measured and Field-Based Theoretical Q of Gravitationally-Small Gravitational Antennas,'' in 2018
IEEE International Symposium on Antennas and Propagation and
USNC-URSI National Radio Science Meeting,
Boston, MA, July 8-13, 2018.
IEEEweblink to paper.
- PDF preprint:
Thomas P. Weldon, Patrick J. Kehoe, and Killian K. Steer,
``Bilinear Transform Approach for Wideband Digital Non-Foster Matching of Electrically-Small Antennas,'' in 2018
IEEE International Symposium on Antennas and Propagation and
USNC-URSI National Radio Science Meeting,
Boston, MA, July 8-13, 2018. IEEEweblink
to paper.
- PDF
preprint: Thomas P. Weldon, Patrick J. Kehoe, and Killian K. Steer, ``A Clock-Tuned Digital Memristor Emulator,'' 2018 IEEE International
Symposium on Circuits and Systems (ISCAS 2018), Florence,
Italy, May 27-30, 2018. IEEEweblink to paper.
- PDF
preprint: Donald M. Johnson and Thomas P. Weldon, ``A
Clock-Tuned Discrete-Time Negative Capacitor Implemented Using Analog
Samplers,'' 2018 IEEE International
Symposium on Circuits and Systems (ISCAS 2018), Florence,
Italy, May 27-30, 2018. IEEEweblink to paper.
- PDF
preprint: Sunny Arokia Swamy Bellary, Nelyadi S. Shetty, Ryan C. Hill, Thomas P. Weldon and James M. Conrad,
``Investigation of a Digital Non-Foster RC Circuit Using Pade and Prony Approximations,''
2018 IEEE International
IEEE SoutheastCon 2018 Proceedings, Tampa, FL, April 19-22, 2018.
- PDF
preprint: Killian K. Steer, Patrick J. Kehoe, and Thomas
P. Weldon, "Investigation of an Adaptively-Tuned Digital
Non-Foster Approach for Impedance Matching of Electrically-Small
Antennas," IEEE
SoutheastCon 2017 Proceedings,
Charlotte, NC, Mar. 31 - Apr. 2, 2017. IEEEweblink
to paper.
- PDF
preprint: Patrick J. Kehoe, Killian K. Steer, and Thomas
P. Weldon, "Measurement of a Clock-Tuned Digital Non-Foster
Circuit for Positive or Negative Digital Capacitance," IEEE
SoutheastCon 2017 Proceedings, Charlotte, NC, Mar. 31 -
Apr. 2, 2017. IEEEweblink
to paper.
- PDF
preprint: Killian K. Steer, Patrick J. Kehoe, and Thomas
P. Weldon, "Measurement of a Digital Non-Foster Negative RLC
Circuit and Digital Positive RLC Circuit," IEEE
SoutheastCon 2017 Proceedings, Charlotte, NC, Mar. 31 -
Apr. 2, 2017.
IEEEweblink
to paper.
- PDF
preprint: Patrick J. Kehoe, Killian K. Steer, and Thomas
P. Weldon, "Stability Analysis and Measurement of RC and RL
Digital Non-Foster Circuits with Latency," IEEE
SoutheastCon 2017 Proceedings, Charlotte, NC, Mar. 31 -
Apr. 2, 2017.
IEEEweblink
to paper.
- PDF
preprint: Kathryn L. Smith, J. Luke Stuemke, Ryan S.
Adams, and Thomas P. Weldon, "A Digital Non-Foster Fast-Wave
Line Using an Internet of Things Approach for Software Tuning of
Multiple Digital Negative Capacitors," IEEE
SoutheastCon 2017 Proceedings, Charlotte, NC, Mar. 31 - Apr. 2, 2017.
IEEEweblink
to paper.
- PDF preprint:
Patrick J. Kehoe, Killian K. Steer, and Thomas P. Weldon,
``Thevenin Forms of Digital Discrete-Time Non-Foster RC and RL
Circuits,'' 2016
IEEE International Symposium on Antennas and Propagation and
USNC-URSI National Radio Science Meeting,
Fajardo,Puerto Rico, June 26- July 1, 2016.
IEEEweblink
to paper.
- PDF preprint:
Killian K. Steer, Patrick J. Kehoe, and Thomas P. Weldon,
``Effects of Latency and Quantization Noise on Digital
Discrete-Time Non-Foster Circuits,'' 2016 IEEE International
Symposium on Antennas and Propagation and USNC-URSI National
Radio Science Meeting, Fajardo, Puerto Rico, June
26- July 1, 2016. IEEEweblink
to paper.
- PDF preprint:
Kathryn L. Smith, Ryan S. Adams, and Thomas P. Weldon,
``Measurement of a Fast-Wave Line Using Digital Non-Foster
Circuits for Software-Adjustable Delay,'' 2016 IEEE International
Symposium on Antennas and Propagation and USNC-URSI National
Radio Science Meeting, Fajardo, Puerto Rico, June
26- July 1, 2016. IEEEweblink
to paper.
- PDF preprint:
Tyler C. Major, Kona Pranay Shekhar, James M. Conrad, and Thomas
P. Weldon, ``Simulation and Measurement of an Internet of Things
Implementation of a Programmable Digital Inductor,'' IEEE
SoutheastCon 2016
Proceedings, pp. 1-4, Norfolk, VA, Mar.
30 - Apr. 3, 2016.
IEEEweblink
to paper.
- PDF
preprint: Thomas P. Weldon, John M. C. Covington III,
Kathryn L. Smith, and Ryan S. Adams, ``A Two-Port Digital
Discrete-Time Non-Foster Circuit Designed for Negative
Capacitance,'' Ninth
International Congress on Advanced Electromagnetic Materials
in Microwaves and Optics – Metamaterials 2015 ,
Oxford, United Kingdom, Sep. 7-10, 2015. IEEEweblink
to paper.
- PDF preprint:
Thomas P. Weldon and Ryan S. Adams, ``Digital Discrete-Time
Non-Foster Approach to Broadband Fast-Wave Microstrip Lines,''
Ninth
International Congress on Advanced Electromagnetic Materials
in Microwaves and Optics – Metamaterials 2015 ,
Oxford, United Kingdom, Sep. 7-10, 2015. IEEEweblink
to paper.
- PDF
preprint: Thomas P. Weldon, John M. C. Covington III,
Kathryn L. Smith, and Ryan S. Adams, ``Stability Conditions for
a Digital Discrete-Time Non-Foster Circuit Element,'' 2015 IEEE International
Symposium on Antennas and Propagation and USNC-URSI National
Radio Science Meeting, Vancouver, BC, Canada, July
19-25, 2015. IEEEweblink
to paper.
- PDF
preprint: Kathryn L. Smith, Thomas P. Weldon, and Ryan S.
Adams, ``Measurement, Simulation, and Theory of a Non-Foster
Metamaterial Unit Cell with Parasitic Resistance,'' 2015 IEEE International
Symposium on Antennas and Propagation and USNC-URSI National
Radio Science Meeting, Vancouver, BC, Canada, July
19-25, 2015. IEEEweblink
to paper.
- PDF
preprint: Thomas P. Weldon, John M. C. Covington
III, Kathryn L. Smith, and Ryan S. Adams ``Performance of
Digital Discrete-Time Implementations of Non-Foster
Circuit Elements,'' 2015 IEEE International
Symposium on Circuits and Systems (ISCAS 2015), Lisbon,
Portugal, May 24-27, 2015. IEEEweblink
to paper.
- PDF preprint:
Kathryn L. Smith, Ryan S. Adams, and Thomas P. Weldon, ``A Novel
Broadband Fractal Metamaterial Unit Cell,'' 2014 IEEE
International Symposium on Antennas and Propagation and
USNC-URSI National Radio Science Meeting , Memphis, TN,
July 6–12, 2014. IEEEweblink
to paper.
- Joshua W. Shehan, Ryan S.
Adams, and Thomas P. Weldon, ``Metamaterial Measurement in a
Cylindrical Coaxial Fixture with Consideration for Inter-Element
Coupling,'' 2014 IEEE International Symposium on
Antennas and Propagation and USNC-URSI National Radio Science
Meeting , Memphis, TN, July 6–12, 2014. IEEEweblink
to paper.
- PDF preprint :
Varun S. Kshatri, John M. C. Covington III, Kathryn L. Smith,
Joshua W. Shehan, Thomas P. Weldon, and Ryan S. Adams
``Measurement and Simulation of a CMOS Current Conveyor Negative
Capacitor for Metamaterials,'' IEEE SoutheastCon 2014
Proceedings , pp. 1-4, Lexington, KY, Mar. 13-16, 2014.
IEEEweblink
to paper.
- PDF preprint :
John M. C. Covington III, Kathryn L. Smith, Joshua W. Shehan,
Varun S. Kshatri, Thomas P. Weldon, and Ryan S. Adams
``Measurement of a CMOS Negative Inductor for Wideband
Non-Foster Metamaterials,'' IEEE SoutheastCon 2014
Proceedings , pp. 1-4, Lexington, KY, Mar. 13-16, 2014.
IEEEweblink
to paper.
- PDF preprint :
John M. C. Covington III, Kathryn L. Smith, Varun S. Kshatri,
Joshua W. Shehan, Thomas P. Weldon, and Ryan S. Adams ``A
Cross-Coupled CMOS Negative Capacitor for Wideband Metamaterial
Applications,'' IEEE SoutheastCon 2014 Proceedings ,
pp. 1-4, Lexington, KY, Mar. 13-16, 2014.
IEEEweblink to paper.
- PDF preprint :
Varun S. Kshatri, John M. C. Covington III, Thomas P. Weldon,
and Ryan S. Adams ``Compensation of Frequency Dependent
Parasitic Resistance in a CMOS Linvill Negative Inductor,'' to
IEEE SoutheastCon 2014 Proceedings , pp. 1-4,
Lexington, KY, Mar. 13-16, 2014. IEEEweblink
to paper.
- PDF preprint :
John M. C. Covington III, Varun S. Kshatri, Thomas P. Weldon,
and Ryan S. Adams ``Parasitic Resistance in Non-Foster Circuits
Caused by Current Conveyor Frequency Response,'' IEEE
SoutheastCon 2014 Proceedings , pp. 1-4, Lexington, KY,
Mar. 13-16, 2014. IEEEweblink
to paper.
- PDF preprint :
Sam L. Shue, Andrew R. Willis, and Thomas P. Weldon ``HubVis:
Software for Gravitational Lens Estimation and Visualization
from Hubble Data,''IEEE SoutheastCon 2014 Proceedings ,
pp. 1-4, Lexington, KY, Mar. 13-16, 2014. IEEEweblink
to paper.
- PDF preprint:
Thomas P. Weldon, Ryan S. Adams,and Joshua W. Shehan, ``Stability of
Embedded Non-Foster Metamaterials with Potentially Unstable
Circuit Parameters,'' Seventh
International Congress on Advanced Electromagnetic Materials
in Microwaves and Optics – Metamaterials 2013 ,
Bordeaux, France, Sept. 16-19, 2013. IEEEwebLink
to paper.
- PDF
preprint : Joshua W. Shehan, John M. C. Covington III,
Varun S. Kshatri, Thomas P. Weldon, Ryan S. Adams,
``Permeability and Permittivity Extraction Issues For Non-Foster
and Active Metamaterials,'' 2013 IEEE International
Symposium on Antennas and Propagation and USNC-URSI National
Radio Science Meeting , Orlando, FL, July 7-13,
2013. IEEEwebLink
to paper.
- PDF
preprint : Joshua W. Shehan, Ryan S. Adams, Thomas P.
Weldon, ``A Coaxial Test Fixture for Transmission/Reflection
Measurements of Metamaterials,'' 2013 IEEE International
Symposium on Antennas and Propagation and USNC-URSI National
Radio Science Meeting , Orlando, FL, July 7-13,
2013. IEEEwebLink
to paper.
- PDF
preprint : Varun S. Kshatri, John M. C. Covington III,
Joshua W. Shehan, Thomas P. Weldon, Ryan S. Adams, ``Comparison
of CMOS Current Conveyor Circuits for Non-Foster
Applications,'' IEEE SoutheastCon 2013 Proceedings ,
pp. 1-4, Jacksonville, FL, April 4-7, 2013. IEEEwebLink
to paper.
- PDF
preprint : Varun S. Kshatri, John M. C. Covington III,
Joshua W. Shehan, Thomas P. Weldon, Ryan S. Adams, ``A
DC-Coupled Negative Inductance Circuit with Integrated
Bias,'' IEEE SoutheastCon 2013 Proceedings , pp.
1-4, Jacksonville, FL, April 4-7, 2013. IEEEwebLink
to paper.
- PDF
preprint : Varun S. Kshatri, John M. C. Covington III,
Joshua W. Shehan, Thomas P. Weldon, Ryan S. Adams, ``Capacitance
and Bandwidth Tradeoffs in a Cross-Coupled CMOS Negative
Capacitor,'' IEEE SoutheastCon 2013 Proceedings ,
pp. 1-4, Jacksonville, FL, April 4-7, 2013. IEEEwebLink
to paper.
- PDF preprint :
Konrad Miehle, Thomas P. Weldon, Ryan S. Adams, and Kasra
Daneshvar, ``Wideband Negative Permeability Metamaterial with
Non-Foster Compensation of Parasitic Capacitance,'' 2012
IEEE International Symposium on Antennas and Propagation and
USNC-URSI National Radio Science Meeting , Chicago, IL,
July 8-14, 2012. IEEEwebLink
to paper.
- PDF
preprint : Thomas P. Weldon, Konrad Miehle, Ryan S.
Adams, and Kasra Daneshvar, ``A Wideband Microwave
Double-Negative Metamaterial with Non-Foster Loading,''
IEEE SoutheastCon 2012 Proceedings , pp. 1-4, Orlando,
FL, March 15-18, 2012. IEEEwebLink
to paper.
- PDF preprint :
Thomas P. Weldon, Konrad Miehle, Ryan S. Adams, and Kasra
Daneshvar, ``Simulation, Measurement, and Parameter Extraction
for a 5.8 GHz Negative Permittivity Metamaterial,'' IEEE
SoutheastCon 2012 Proceedings , pp. 1-4, Orlando, FL,
March 15-18, 2012. IEEEwebLink
to paper.
- PDF preprint :
Thomas P. Weldon, Ryan S. Adams, and Kasra Daneshvar, ``Gaussian
Models for Observed Dispersion in High Redshift Gamma Ray
Bursts,'' IEEE SoutheastCon 2012 Proceedings , pp.
1-4, Orlando, FL, March 15-18, 2012. IEEEwebLink
to paper.
- PDF preprint :
Raghu K. Mulagada, Yi Yang, Thomas P. Weldon, and Don T. Lieu,
``Single Chip Spectrum Sensing Module in CMOS with Digital
Frequency Synthesizer and Digital Output,'' IEEE
SoutheastCon 2012 Proceedings , pp. 1-4, Orlando, FL,
March 15-18, 2012. IEEEwebLink
to paper.
- Don Lieu and Thomas P. Weldon, ``A 10MHz Continuous Time
Bandpass Delta Sigma Modulator,'' IEEE SoutheastCon 2012
Proceedings , pp. 1-4, Orlando, FL, March 15-18, 2012.
- PDF
preprint : Thomas P. Weldon, Ryan S. Adams, Kasra
Daneshvar, and Raghu K. Mulagada, ``Metamaterials, Gamma-Ray
Bursts, Quantum Gravity, and the Search for the Missing Half of
the Maxwell Equations,'' 2011 IEEE International Microwave
Symposium (IMS 2011) , Baltimore, MD, June 2011. IEEEwebLink
to paper.
- PDF preprint
: T. P. Weldon, R. S. Adams, and R. K. Mulagada, ``A novel
unit cell and analysis for epsilon negative metamaterial,''
IEEE SoutheastCon 2011 Proceedings , pp. 211-214,
Nashville, TN, March 2011. IEEEwebLink
to paper.
- PDF preprint
: T. P. Weldon, R. S. Adams, K. Daneshvar, and R. K.
Mulagada, ``Prospective gamma-ray propagation models and
comparisons to metamaterial models,'' IEEE SoutheastCon
2011 Proceedings , pp. 207-210, Nashville, TN, March
2011. IEEEwebLink
to paper.
- PDF
preprint : D.T. Lieu and T. P. Weldon, ``Simulation of
Simple Delta-Sigma Modulator for Driving Class C RF
Amplifiers,'' IEEE SoutheastCon 2011 Proceedings ,
pp. 228-231, Nashville, TN, March 2011. IEEEwebLink
to paper.
- See
abstract : Shahab Chitchian, Thomas P. Weldon, Michael A.
Fiddy, and Nathaniel M. Fried, ``Combined image processing
algorithms for improved optical coherence tomography of prostate
nerves,'' Journal of
Biomedical Optics , vol. 15, no. 4, pp. 046014-1 -
046014-6, July/August 2010 .
- PDF preprint :
Thomas P. Weldon, Ryan S. Adams, Kasra Daneshvar, and Raghu K.
Mulagada, ``Left-Handed Extensions of Maxwell's Equations for
Metamaterials,'' IEEE SoutheastCon 2010 Proceedings ,
pp. 489-492, Charlotte, NC, March 18-21, 2010. IEEEwebLink
to paper.
- PDF preprint :
Raghu Mulagada and Thomas P. Weldon, ``A Delay Line
Discriminator for IFM Using a Left-Handed Delay Line,''
IEEE SoutheastCon 2010 Proceedings , pp. 185-188,
Charlotte, NC, March 18-21, 2010. IEEEwebLink
to paper.
- PDF preprint :
Payam Shoghi, Christopher J. Barnwell, Raghu Mulagada, and
Thomas P. Weldon, ``A Prototype Single-Chip Spectrum Analyzer
with Integrated Frequency-Synthesized Tuning,'' IEEE
SoutheastCon 2010 Proceedings , pp. 45-48, Charlotte,
NC, March 18-21, 2010. IEEEwebLink
to paper.
- Shahab Chitchian, Thomas P. Weldon, and Nathaniel M. Fried,
``OCT image segmentation for differentiation of the cavernous
nerves from the prostate gland,'' Proceedings of SPIE
, Vol. 7443, pp.74431D1-74431D4, August 2009. SPIEweblink
to paper.
- See
abstract : Shahab Chitchian, Thomas P. Weldon, and
Nathaniel M. Fried, ``Segmentation of Optical Coherence
Tomography Images for Differentiation of the Cavernous Nerves
from the Prostate Gland,'' Journal of Biomedical
Optics , vol. 14, no. 4, pp. 044033-1 - 044033-4,
July/August 2009. SPIEweblink
to paper.
- PDF preprint : T. P.
Weldon, ``Rayleigh and Mie Enhancement of Blackbody Radiation in
Nanoscale Devices,'' IEEE SoutheastCon 2009 Proceedings pp.
216-220,, Atlanta, GA, March 2009. IEEEwebLink
to paper.
- PDF preprint : P.
Shoghi, C.J. Barnwell, T. P. Weldon, ``Experimental Results for
a Successive Detection Log Video Amplifier in a Single- Chip
Frequency Synthesized Radio Frequency Spectrum Analyzer,''
IEEE SoutheastCon 2009 Proceedings , Atlanta, GA, pp.
379-382, March 2009. IEEEweblink
to paper.
- PDF preprint : T. P.
Weldon, Geng Ye, Raghu K. Mulagada ``Linearization Conditions
for Two and Four Stage Circuit Topologies Including Third Order
Nonlinearities,'' IEEE SoutheastCon 2009 Proceedings ,
Atlanta, GA, pp. 362-366, March 2009.
IEEEweblink to paper.
- PDF preprint : P.
Shoghi, C.J. Barnwell, T. P. Weldon, ``Experimental Results for
an Inductively Matched Microwave Amplifier in a Standard 0.5
Micron CMOS Process Using Four Identical Spiral Inductors,''
IEEE SoutheastCon 2008 Proceedings , Huntsville, AL,
April 2008.
- PDF preprint
: T. P. Weldon, ``Removal of Image Segmentation Boundary
Errors Using an N-ary Morphological Operator,'' IEEE
SoutheastCon 2007 Proceedings , pp. 509-513, Richmond,
VA, March 2007.
- PDF preprint
: D. T. Lieu and T. P. Weldon, ``Reduced Current Class AB
Radio Receiver Stage Using Novel Superlinear Transistors with
Parallel NMOS and PMOS Transistors at One GHz,'' IEEE
SoutheastCon 2007 Proceedings , pp.49-53, Richmond, VA,
March 2007.
- PDF abstract
preprint : C. Mack, V. Mogallapu, A. Willis, and T.
Weldon, ``Exploiting Typical Clinical Imaging Constraints for 3D
Outer Bone Surface Segmentation,'' IEEE SoutheastCon 2007
Proceedings , pp. 519-523, Richmond, VA, March 2007.
- PDF preprint :
T. P. Weldon, ``Improved Image Segmentation with a Modified
Bayesian Classifier,'' 2006 IEEE International Conference
on Acoustics, Speech, and Signal Processing (ICASSP 2006) ,
pp. II-697-700, Toulouse, FR, May 2006.
- PDF preprint : T.
P. Weldon, D. T. Lieu, and M. J. Davis, ``Experimental Results
at One GHz on Linearizing an NMOS Transistor with a Parallel
PMOS Transistor,'' 2005 IEEE Radio Frequency IC Symposium
(RFIC 2005) , Long Beach, CA, June 2005.
- PDF preprint :
T. P. Weldon and K. Miehle, ``Using Amplifiers with Poor
Linearity to Linearize Amplifiers with Good Linearity,''
2003 IEEE MTT-S International Microwave Symposium (IMS 2003) ,
Philadelphia, PA, vol.3, pp.1741-44, June 2003.
- PDF preprint : T. P. Weldon,
Yuriy A. Gryazin, and Michael V. Klibanov, ``Novel Inverse
Methods in Land Mine Imaging,'' 2001 IEEE Int. Conf. on
Acoustics Speech and Signal Processing (ICASSP 2001) ,
Salt Lake City, UT, 7-11 May, 2001.
-
Abstract of paper. : Joseph M. Reinhardt, Andrien J.
Wang, Thomas P. Weldon, and W. E. Higgins, ``Cue-Based
Segmentation of 4D Cardiac Image Sequences,'' Computer
Vision and Image Understanding , Vol. 77, No. 2, pp.
251-262 , Feb. 2000.
- PDF preprint : Thomas P.
Weldon, Yuriy A. Gryazin, and Michael V. Klibanov, ``Comparison
of 2D and 1D Approaches to Forward Problem in Mine Detection,''
SPIE Proceedings , Vol. 4038 , pp. 1140-1148 ,
April 2000.
- PDF preprint : T. P.
Weldon and W. E. Higgins, ``Designing Multiple Gabor Filters for
Multi-Texture Image Segmentation,''
Optical Engineering , Vol. 38 No. 9 , pp.
1478-1489 , Sept. 1999.
- PDF preprint : T. P. Weldon and
W. E. Higgins, ``An Algorithm for Designing Multiple Gabor
Filters for Segmenting Multi-Textured Images,'' 1998 IEEE
Int. Conf. on Image Processing (ICIP98) , Chicago, IL,
4-7 Oct. 1998.
- : D. F. Dunn, T. P. Weldon, and W. E. Higgins, ``Extracting
Halftones from Printed Documents Using Texture Analysis,''
Optical Engineering , Vol. 36 No. 4, pp.
1044-1052, April 1997.
- PDF preprint : T. P.
Weldon, W. E. Higgins, and D. F. Dunn, ``Efficient Gabor Filter
Design for Texture Segmentation,''
Pattern Recognition , Vol. 29, No. 12, pp.
2005-2015, Dec. 1996.
- PDF preprint : T. P.
Weldon, W. E. Higgins, and D. F. Dunn, ``Gabor Filter Design for
Multiple Texture Segmentation,''
Optical Engineering , Vol. 35 No. 10, pp.
2852-2863, October 1996.
- PDF preprint : T. P. Weldon
and W. E. Higgins, ``Integrated Approach to Texture Segmentation
Using Multiple Gabor Filters,'' 1996 IEEE Int. Conf. on
Image Processing (ICIP96) , Lausanne, Switzerland, vol.
III, pp. 955-958, 16-19 Sept. 1996.
- PDF preprint : D. F.
Dunn, T. P. Weldon, and W. E. Higgins, : `` Extracting Halftones
from Printed Documents Using Texture Analysis,''
1996 IEEE Int. Conf. on Image Processing (ICIP96) ,
Lausanne, Switzerland, vol. II, pp. 225-228, 16-19 Sept. 1996.
- PDF preprint : T. P.
Weldon and W. E. Higgins, ``Design of Multiple Gabor Filters for
Texture Segmentation,'' 1996 IEEE Int. Conf. Acous.,
Speech, Sig. Proc. (ICASSP96) , Atlanta, GA, vol. IV, pp.
2245-2248, 7 May 1996.
- PDF preprint : T. P. Weldon
and W. E. Higgins, ``Multiscale Rician Approach to Gabor Filter
Design for Texture Segmentation,'' 1994 IEEE Int. Conf. on
Image Processing Austin, TX, vol II, pp. 620-624, 13-16
November, 1994.
- PDF preprint : T. P.
Weldon, W. E. Higgins, and D. F. Dunn, ``Efficient Gabor Filter
Design Using Rician Output Statistics,'' 1994 IEEE Int.
Symp. Circuits, Systems, London, England, vol. 3, pp.
25-28, 30 May - 2 June, 1994.
- T. Weldon, ``An Inductorless Double Scroll Chaotic Circuit,''
American Journal of Physics, October 1990.
Patents
- Thomas P. Weldon, US patent 10,073,812,
``Digital discrete-time non-Foster circuits and elements,''
Sep. 11, 2018, US 10,073,812 patent
cover sheet.
- Thomas P. Weldon, Ryan S. Adams, Konrad Miehle, US patent
9,715,953,
``Wideband Negative-Permittivity Metamaterials and
Negative-Permeability Metamaterials Utilizing Non-Foster
Elements,''
Jul. 25, 2017. US 9,715,953 patent cover sheet.
- D. Binkley, R. Makki, T. Weldon, A. Chehab, US patent
7,710,140,
``Methods and apparatus for testing electronic circuits,''
May 4, 2010. US 7,710,140 patent
cover sheet.
- D. Binkley, R. Makki, T. Weldon, A. Chehab, US patent
7,148,717,
``Methods and apparatus for testing electronic circuits,''
Dec. 12, 2006, US 7,148,717
patent cover sheet.
- T. P. Weldon , US patent 6,943,628,
`` Methods and apparatus for substantially reducing nonlinear
distortion,''
Sept. 13, 2005, US 6,943,628
patent cover sheet .
- T. P. Weldon , US patent 6,906,585,
``Method and Apparatus for for cancellation of third order
intermodulation distortion and other nonlinearities,''
June 14, 2005, US 6,906,585 patent
cover sheet .
- T. P. Weldon , US patent 6,853,247,
``Methods and apparatus for using Taylor series expansion
concepts to substantially reduce nonlinear distortion,''
Feb. 8, 2005, US 6,853,247 patent
cover sheet .
- T. P. Weldon , US patent 6,853,248,
``Methods and apparatus for substantially reducing nonlinear
distortion using multiple nonlinear devices,''
Feb. 8, 2005, US 6,853,248 patent
cover sheet.
- T. P. Weldon , US patent 6,794,938,
``Method and Apparatus for for cancellation of third order
intermodulation distortion and other nonlinearities,''
Sept. 21, 2004, US 6,794,938
patent cover sheet.
- D. Binkley, R. Makki, T. Weldon, A. Chehab, US patent
6,833,724,
``Methods and apparatus for testing electronic circuits,''
Dec. 21, 2004, US 6,833,724
patent cover sheet.
Refereed Presentations & Abstracts
-
PDF preprint : Shahab Chitchian, Thomas P. Weldon, and
Nathaniel M. Fried, ``2-D Segmentation OF OCT Prostate Images,''
24th Engineering and Urology Society (EUS) Annual Meeting,
Chicago, IL, p. 23, April 25, 2009.
Other papers
- A detailed Gabor filter paper
: T. P. Weldon, July, 2002, unpublished paper on the
simultaneous design of a classifier and Gabor filter-bank for
texture segmentation.
- PDF
of report : Rathore, Ammar Y. ; Weldon, Thomas P., ``Wave
Propagation Model and Simulations for Landmine Detection,''
published technical report on http://oai.dtic.mil , Accession
Number : ADA365259, pp. 1-19, March 1999.
- T. Weldon, ``High Sensitivity Wideband Millimeter Wave
Receiver,'' U.S. Air Force Technical Report AFWAL-TR-87-1145,
Wright Patterson AFB, February, 1988.
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