Matthew Bray

Education History

• Honors Bachelor, Electrical Engineering, University of Delaware
• M S, Electrical Engineering, Pennsylvania State University
• Ph D, Electrical Engineering, Pennsylvania State University

Work Experience

Space Radio Group Chief Technologist, Johns Hopkins Applied Physics Laboratory

Publications

M. G. Bray, “Europa Clipper High Gain Antenna Prototype,” 2020 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, Montreal, QC, 2020

M. G. Bray, “A Spiral Radial Line Slot Array Antenna for NASA’s Double Asteroid Redirection Test (DART),” 2020 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, Montreal, QC, 2020

J. Dennison, M. G. Bray, “Radial Line Slot Array Antenna High Power Thermal Vacuum Testing,” 2020 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, Montreal, QC, 2020

R. Schulze, M. Bray et al., “Resurfacing the NASA Langley Experimental Test Range Reflector,” 2018 AMTA Proceedings, Williamsburg, VA, 2018, pp. 1-7.

D. K. Srinivasan*, M. Angert, M. Ballarotto, S. Berman, M. Bray, R. Garvey, D. Hahne, C. Haskins, J. Porter, R. Schulze, Chris Scott, Avinash Sharma, and Colin Sheldon, “The Radio Frequency Telecommunications System for the NASA Europa Clipper Mission,” IAC-17-B2.6.5, Proceedings of the 68th International Astronautical Congress, Adelaide, Australia, 25-29 September 2017.

M. G. Bray, “A spiral radial line slot array antenna with metallic standoffs for deep space missions,” 2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, San Diego, CA, 2017, pp. 621-622.

D. K. Srinivasan, C. Z. Sheldon and M. G. Bray, “Telecommunications systems for the NASA Europa missions,” 2017 IEEE MTT-S International Microwave Symposium (IMS), Honololu, HI, 2017, pp. 394-397.

M. G. Bray, “A radial line slot array antenna for deep space missions,” 2017 IEEE Aerospace Conference, Big Sky, MT, 2017, pp. 1-6.

M. G. Bray, “Dual X/Ka-band corrugated feed horn for deep space telecommunications,” 2016 IEEE International Symposium on Antennas and Propagation (APSURSI), Fajardo, 2016, pp. 1549-1550.

C. Z. Sheldon and M. G. Bray, “Reduced mass printed Quasi-Yagi antennas,” 2016 IEEE International Symposium on Antennas and Propagation (APSURSI), Fajardo, 2016, pp. 505-506.

M. G. Bray and R. C. Schulze, “High Gain Antenna array feed candidate for NASA’s Europa Clipper,” 2015 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, Vancouver, BC, 2015, pp. 2193-2194.

N. H. Adams, H. B. Sequeira, M. G. Bray, D. K. Srinivasan, R. C. Schulze, S. F. Berman, and H. Ambrose, “Monopulse autotrack methods using software-defined radios,” 2015 IEEE Aerospace Conference, Big Sky, MT, 2015, pp. 1-6.

M. G. Bray and E. Lier, “High Efficiency Short Backfire Antenna Using Electromagnetically Hard Walls,” in IEEE Antennas and Wireless Propagation Letters, vol. 14, pp. 1614-1617, 2015.

S. H. Martin, I. Martinez, J. P. Turpin, D. H. Werner, E. Lier and M. G. Bray, “The Synthesis of Wide- and Multi-Bandgap Electromagnetic Surfaces With Finite Size and Nonuniform Capacitive Loading,” in IEEE Transactions on Microwave Theory and Techniques, vol. 62, no. 9, pp. 1962-1972, Sept. 2014.

J. P. Turpin, Q. Wu, D. H. Werner, B. Martin, M. Bray and E. Lier, “Near-Zero-Index Metamaterial Lens Combined With AMC Metasurface for High-Directivity Low-Profile Antennas,” in IEEE Transactions on Antennas and Propagation, vol. 62, no. 4, pp. 1928-1936, April 2014.
J. P. Turpin, Q. Wu, D. H. Werner, B. Martin, M. G. Bray, and E. Lier, “Low Cost and Broadband Dual-Polarization Metamaterial Lens for Directivity Enhancement,” Antennas and Propagation, IEEE Transactions on, Vol. 60, No. 12, pp. 5717-5726, Dec. 2012.

M. G. Bray, E. Lier, R. K. Shaw, “Wideband Circular Waveguide Polarizer with Metamaterial Liner,” Proceedings of the 2012 IEEE International Symposium on Antennas & Propagation and USNC/URSI National Radio Science Meeting, July 8-14, 2012, Chicago, IL, USA.

E. Lier, M. G. Bray, B. G. Martin, J. P. Turpin, Q. Wu and D. H. Werner, “Demonstration of High Gain Low Profile Antenna Based on Low-Index Metalens and Artificial Magnetic Ground Plane,” Proceedings of the 2012 IEEE International Symposium on Antennas & Propagation and USNC/URSI National Radio Science Meeting, July 8-14, 2012, Chicago, IL, USA.

S. Martin, D. H. Werner, M. G. Bray, E. Lier, and B. Cleaveland, “Versatile Design Technique for Customizable Electromagnetic Band Gap Structures,” Proceedings of the 2012 IEEE International Symposium on Antennas & Propagation and USNC/URSI National Radio Science Meeting, July 8-14, 2012, Chicago, IL, USA.

J. P. Turpin, Qi Wu, D. H. Werner, E. Lier, B. Martin, and M. G. Bray, “A Compact Directive Antenna Combining Metamaterial Collimating Lens And Artificial Magnetic Ground Plane,” Proceedings of the 2012 IEEE International Symposium on Antennas & Propagation and USNC/URSI National Radio Science Meeting, July 8-14, 2012, Chicago, IL, USA.

M. F. Pantoja, M. G. Bray, D. H. Werner, P. L. Werner and A. R. Bretones, “A Computationally Efficient Method for Simulating Metal-Nanowire Dipole Antennas at Infrared and Longer Visible Wavelengths,” IEEE Transactions on Nanotechnology, vol. 11, Issue. 2, pp. 239-246, March, 2012.

E. Lier, B. Martin, M. G. Bray, D. H. Werner, J. Turpin, and Q. Wu, “Demonstration of Low-Index Meta-Lens for High Gain Low Profile Antennas,” Proceedings of the 2011 IEEE International Symposium on Antennas and Propagation and USNC/URSI National Radio Science Meeting, Spokane, WA, USA, July 3-8, 2011.

M. F. Pantoja, M. G. Bray, D. H. Werner, P. L. Werner and A. R. Bretones, “Efficient computational models for optical nanowires,” 2010 IEEE Antennas and Propagation Society International Symposium, Toronto, ON, 2010, pp. 1-4.

M. G. Bray and D. H. Werner, “Fast Simulation of Lumped-Element Loaded AMC Antenna Systems Using Embedded Element Theory,” Proceedings of the 2010 IEEE International Symposium on Antennas and Propagation and USNC/URSI National Radio Science Meeting, Toronto, Canada, July 11-17, 2010.

M. G. Bray and D. H. Werner, “Near-Field Synthesis of Gaussian Beams Using Antenna Arrays,” Proceedings of the 2010 IEEE International Symposium on Antennas and Propagation and USNC/URSI National Radio Science Meeting, Toronto, Canada, July 11-17, 2010.

P. E. Sieber, M. G. Bray, J. A. Bossard, A. E. Kovalev, T. S. Mayer, and D. H. Werner, “Stand-off Detection of Chemical Analytes with Passive Chemo-Sensing IR Absorbers,” Proceedings of the 2010 IEEE International Symposium on Antennas and Propagation and USNC/URSI National Radio Science Meeting, Toronto, Canada, July 11-17, 2010.

M. G. Bray and D. H. Werner, “Passive Switching of Electromagnetic Devices with Memristors,” Applied Physics Letters, vol. 96, no. 7, 073504/1-3, Feb. 2010.

M. G. Bray and D. H. Werner, “Passive Electromagnetic Switching with Memristors,” Proceedings of the 2009 IEEE International Symposium on Antennas and Propagation and USNC/URSI National Radio Science Meeting, Charleston, SC, USA, June 1-5, 2009.

A. E. Kovalev, M. G. Bray, T. S. Mayer, D. H. Werner, and E.A. Hernandez-Pagan, “Smart Dust Infrared Sensors for Standoff Explosives Detection,” Proceedings of the SPIE, Vol. 7304, pp 73041A-73041A-8, 2009.

A.E. Kovalev, M. G. Bray, T.S. Mayer, and D.H. Werner, “Agent Reactive Modulated Optical Reflector for Hazardous Agent Detection,” 2008 NSTI Nanotechnology Conference and Trade Show, June 1-5, 2008, Boston, Massachusetts, U.S.A.

M. G. Bray, A. Kovalev, D. H. Werner, T. S. Mayer and L. Takiff, “Chemoselective Salisbury Screen Absorbers for Passive Standoff Detection of Analytes,” Proceedings of the 2008 IEEE AP-S International Symposium and USNC/URSI National Radio Science Meeting, San Diego, CA, USA on July 5-12, 2008.

M. E. Pellen, J. A. Bossard, D. H. Kwon, B. Rybicki, M. G. Bray and D. H. Werner, “Surface Impedance Models for Nanoscale Electromagnetics,” Proceedings of the 2008 IEEE AP-S International Symposium and USNC/URSI National Radio Science Meeting, San Diego, CA, USA on July 5-12, 2008.

Z. Bayraktar, M. G. Bray, and D. H. Werner, “GA Optimized Reconfigurable Frequency Selective Surfaces for Passive Standoff Detection of Chemical Agents,” Proceedings of the 2008 IEEE AP-S International Symposium and USNC/URSI National Radio Science Meeting, San Diego, CA, USA, July 5-11, 2008.

M. G. Bray, A. Kovalev, Z. Bayraktar, D. H. Werner, and T. S. Mayer, “Reconfigurable Dipole Chaff Elements for Passive Standoff Detection of Chemical Agents,” Proceedings of the 2007 IEEE Antennas and Propagation Society International Symposium, Honolulu, Hawaii, USA, pp. 1513-1516, June 10-15, 2007.

M. G. Bray, X. Wang, and D. H. Werner, “Dispersive Chiral Frequency Selective Surfaces Simulated via FEBI and FDTD,” Proceedings of the 2007 IEEE Antennas and Propagation Society International Symposium, Honolulu, Hawaii, USA, pp. 2538-2541, June 10-15, 2007.

M. E. Pellen, M. G. Bray, J. S. Petko, D. H. Werner, Q. Xiong, G. Chen, and P. C. Eklund, “Electromagnetic Scattering from Long Nanowires,” Proceedings of the 2007 IEEE Antennas and Propagation Society International Symposium, Honolulu, Hawaii, USA, pp. 3392-3395, June 10-15, 2007.

D. H. Kwon, L. Li, J. A. Bossard, M. G. Bray, and D. H. Werner, “Zero Index Metamaterials with Checkerboard Structure,” IEE Electronics Letters, Volume 43, Issue 6, pp. 9-10, March 15, 2007.

M. G. Bray, Z. Bayraktar, and D. H. Werner, “GA Optimized Ultra-Thin Tunable EBG AMC Surfaces,” Proceedings of the 2006 IEEE Antennas and Propagation Society International Symposium with USNC/URSI National Radio Science and AMEREM Meetings, Albuquerque, NM, pp. 410-413, July 9-14, 2006.

A. Semichaevsky, A. Akyurtlu, D. Kern, D.H. Werner, and M.G. Bray, “Novel BI-FDTD Approach for the Analysis of Chiral Cylinders and Spheres,” IEEE Transactions on Antennas and Propagation. Vol. 54, No. 3, pp. 925-932, March 2006.

M. G. Bray, and D. H. Werner, “A Simple Dispersive Chiral FDTD Formulation Implemented on a Yee Grid,” Proceedings of the 2005 IEEE Antennas and Propagation Society International Symposium and USNC/URSI National Radio Science Meeting, Washington DC, Vol. 1A, pp. 126-129, July 3-8, 2005.

D. J. Kern, M. G. Bray, T. G. Spence, and D. H. Werner, “Novel Design Methodologies for Tunable EBG AMC Surfaces,” Bianisotropics 2004: Proceedings of the 10th Conference on Complex Media and Metamaterials, Het Pand, Ghent, Belgium, pp. 192-195, Sept. 22-24, 2004.

M. G. Bray , and D. H. Werner, “A Broadband Open-Sleeve Dipole Antenna Mounted Above a Tunable EBG AMC Ground Plane,” Proceedings of the 2004 IEEE Antennas and Propagation International Symposium, Monterey, CA. June 21-26, 2004. Vol. II, pp. 1147 – 1150.

M. G. Bray, and D. H. Werner, “A Novel Design Approach for an Independently Tunable Dual-Band EBG AMC Surface,” Proceedings of the 2004 IEEE Antennas and Propagation International Symposium. Monterey, CA. June 21-26, 2004. Vol. I, pp. 289 – 292.

J. A. Bossard, D. H. Werner, and M. G. Bray, “Efficience Impedance Interpolation and Pattern Approximation for Linear Microstrip Phased Arrays Using Neural Networks,” Proceedings of the 2003 IEEE International Symposium on Antennas and Propagation and URSI North American Radio Science Meeting, Columbus, OH, URSI Digest, p.102, June 2003.

M. G. Bray, D. H. Werner, D. W. Boeringer, and D. W. Machuga, “Optimization of Thinned Aperiodic Linear Phased Arrays Using Genetic Algorithms to Reduce Grating Lobes During Scanning,” IEEE Transactions on Antennas and Propagation, Vol. 50, No. 12, pp. 1732-1742, Dec. 2002.

D. H. Werner, M. G. Bray, R. J. Allard, and P. L. Werner. The Synthesis and Design of Communication Antennas Using Genetic Algorithms. Chapter in Soft Computing in Communications ,Lipo Wang, Editor, Springer-Verlag, New York, pp. 221-244, 2004.

M. G. Bray, D. H. Werner, D. W. Boeringer, and D. W. Machuga. “Matching Network Design Using Genetic Algorithms for Impedance Constrained Thinned Arrays.”Proceedings of the 2002 IEEE Antennas and Propagation Society International Symposium, San Antonio, TX, Vol. 1, pp. 528-531. 2002.

K. Neiss, D. H. Werner, M. G. Bray, and S. Mummareddy. “Nature-Based Antenna Design: Interpolating the Input Impedance of Fractal Dipole Antennas via a Genetic Algorithm Trained Neural Network.” 2002 IEEE Antennas and Propagation Society International Symposium and USNC/URSI National Radio Science Meeting, San Antonio, TX, URSI Digest, p. 374, 2002.

M. G. Bray, D. H. Werner, D. W. Boeringer, and D. W. Machuga, “Thinned Aperiodic Linear Phased Array Optimization for Reduced Grating Lobes During Scanning with Input Impedance Bounds.” Proceedings of the 2001 IEEE Antennas and Propagation Society International Symposium, Boston, MA, Vol. 3, pp. 688-691. July 2001.

M. G. Bray, D. H. Werner, D. W. Boeringer, and D. W. Machuga, “Optimization of Thinned Aperiodic Linear Arrays Using Genetic Algorithms to Reduce Grating Lobes During Scanning.” Proceedings of the 17th Annual Review of Progress in Applied Computational Electromagnetics (ACES), Naval Postgraduate School, Monterey, CA, pp. 580-587. March 2001.

Honors and Awards

• JHUAPL special recognition for DART HGA Design (2018)
• JHUAPL special recognition for Europa Clipper HGA Design (2017)
• LM Engineering Spot Award for Tactical Downlink (2013)

Professional Organizations

IEEE