Eduardo Rojas

Title
Assistant Professor of Electrical and Computer Engineering
Email
Department
Electrical Engineering and Computer Science Dept
College
Daytona College of Engineering

Areas of Expertise

RF and Microwave Circuits, Additive Manufacturing (3D-Printing), Antennas, Monolithic Microwave Integrated Circuits (MMIC), Material science for high-frequency circuits.
Eduardo Rojas


Dr. Rojas earned his M.S. and Ph.D. degrees from the University of South Florida, all in Electrical Engineering; in 2014 and 2017, respectively. He joined the Embry-Riddle Aeronautical University in 2017 where he is currently an assistant professor. His research interests are in the area of microwave/mm-wave circuit and antenna applications of additive manufacturing; and RFID for wireless sensing. He is the Director of ERAU’s Wireless Devices and Electromagnetics Laboratory (WIDE Lab www.wide-lab.com). Rojas was the recipient of a CAREER Award from The National Science Foundation in 2019. Dr. Rojas has more than 30 peer-reviewed publications, and he is a reviewer for the IEEE MTT-S Transactions on Microwave Theory and Techniques and Proceedings of the IEEE, among other prestigious journals. He has 4 US patents and 3 active US patent applications. He is member of the IEEE MTT-S Technical Committee 24 and the RTCA SC-236 committee for Standards for Wireless Avionics Intra-Communication System (WAIC) within 4200-4400 MHz.



  • Ph.D. - Doctor of Philosophy in Electrical Engineering, University of South Florida
  • M.S. - Master of Science in Electrical Engineering, University of South Florida

  • EE 800: Dissertation
  • EE 340: Electric and Magnetic Fields
  • EE 700: Graduate Thesis
  • EE 430: Intro Radio Frequency Circuits
  • EE 430L: Radio Frequency Circuits Lab
  • EE 595C: RF/Microwave Circ Des & Measur

Patents:

Apertured Waveguides for Electromagnetic Wave Transmission, U.S. Patent No. 10,396,422. Patent awarded August 27, 2019.

RFID Tags for On- and Off-Metal Applications (continuation), U.S. Patent No. 10,289,945. Patent awarded December 5th, 2017.

Three-Dimensionals RFID Tags, U.S. Patent No. 10,038,248. Patent awarded July 31st, 2018.

RFID Tags for On- and Off-Metal Applications, U.S. Patent No. 9,836,685. Patent awarded December 5th, 2017.



Journal Publications

Clayton Neff, Eduardo A. Rojas-Nastrucci, Justin Nussbaum, Darrell Griffin, Thomas M. Weller, and Nathan B. Crane, " Thermal and Vapor Smoothing of Thermoplastic for Reduced Surface Roughness of Additive Manufactured RF Electronics," accepted in IEEE Transactions on Components, Packaging and Manufacturing Technology, 2019.

R. A. Ramirez, E. A. Rojas-Nastrucci and T. M. Weller, "Laser-Assisted Additive Manufacturing of mm-Wave Lumped Passive Elements," in IEEE Transactions on Microwave Theory and Techniques, vol. 66, no. 12, pp. 5462-5471, Dec. 2018.

E. A. Rojas-Nastrucci, J. Nussbaum, T. M. Weller and N. B. Crane, “Ka-Band Characterization of Binder Jetting for 3D-Printing of Metallic Rectangular Waveguide Circuits and Antennas," in IEEE Transactions on Microwave Theory and Techniques, vol. 65, no. 9, pp. 3099-3108, Sept. 2017.

E. A. Rojas-Nastrucci, Harvey Tsang, Paul Deffenabugh, T. M. Weller, Ramiro A. Ramirez, D. Hawatmeh, and Kenneth Church, “Characterization and Modeling of K-Band Coplanar Waveguide Digitally Manufactured using Pulsed Picosecond Laser Machining of Thick-Film Conductive Paste,” in IEEE Transactions on Microwave Theory and Techniques, vol. 65, no. 9, pp. 3180-3187, Sept. 2017.

E. A. Rojas-Nastrucci, A. D. Snider and T. M. Weller, "Propagation Characteristics and Modeling of Meshed Ground Coplanar Waveguide," in IEEE Transactions on Microwave Theory and Techniques, vol. 64, no. 11, pp. 3460-3468, Nov. 2016.

J. Castro, E. A. Rojas-Nastrucci, A. Ross, T. M. Weller and J. Wang, "Fabrication, Modeling, and Application of Ceramic-Thermoplastic Composites for Fused Deposition Modeling of Microwave Components," in IEEE Transactions on Microwave Theory and Techniques, vol. 65, no. 6, pp. 2073-2084, June 2017.

Thomas P. Ketterl, Yaniel Vega, Nicholas C. Arnal, John W. I. Stratton, Eduardo A. Rojas-Nastrucci, María F. Córdoba-Erazo, Mohamed M. Abdin, Casey W. Perkowski, Paul I. Deffenbaugh, Kenneth H. Church, and Thomas M. Weller, "A 2.45 GHz Phased Array Antenna Unit Cell Fabricated Using 3-D Multi-Layer Direct Digital Manufacturing," in IEEE Transactions on Microwave Theory and Techniques, vol. 63, no. 12, pp. 4382-4394, Dec. 2015.

R. A. Ramirez, E. A. Rojas-Nastrucci and T. M. Weller, "UHF RFID Tags for On-/Off-Metal Applications Fabricated Using Additive Manufacturing," in IEEE Antennas and Wireless Propagation Letters, vol. 16, no. , pp. 1635-1638, 2017.

Juan Castro, Eduardo Rojas, Thomas Weller, and Jing Wang, “High-Permittivity and Low-Loss Electromagnetic Composites Based on Co-fired Ba0.55Sr0.45TiO3 or MgCaTiO2 Microfillers for Additive Manufacturing and Their Application to 3-D Printed K-Band Antennas”, in Journal of Microelectronics and Electronic Packaging 2016 13:3, 102-112.

Conference Papers

Carlos R. Mejias-Morillo, and Eduardo A. Rojas-Nastrucci, “Z-Meandering Miniaturized Patch Antenna Using Additive Manufacturing,” 2020 IEEE Radio and Wireless Symposium (RWS), San Antonio, TX, 2020.

C. R. Mejias-Morillo, A. Gbaguidi, D. W. Kim, S. Namilae and E. A. Rojas-Nastrucci, "UHF RFID-based Additively Manufactured Passive Wireless Sensor for Detecting Micrometeoroid and Orbital Debris Impacts," 2019 IEEE International Conference on Wireless for Space and Extreme Environments (WiSEE), Ottawa, ON, Canada, 2019, pp. 41-47.

Eduardo Rojas-Nastrucci, Ramiro Ramirez, Derar Hawatmeh, Di Lan, Jing Wang and Thomas Weller, “Laser Enhanced Direct Print Additive Manufacturing for Mm-Wave Components and Packaging,” ICEAA 2017, Verona, Italy, September 2017.

J. Castro, E. Rojas, T. Weller and J. Wang, “High-k and Low-loss Electromagnetic Composites for Direct Digital Manufacturing of mmWave Devices,” accepted to 2017 Antennas and Propagation Symposium, January 2017

Eduardo A. Rojas-Nastrucci, Justin Nussbaum, Thomas M. Weller, and Nathan B. Crane, “Metallic 3D Printed Ka-Band Pyramidal Horn using Binder Jetting”, IEEE MTT-S 2016 Latin America Microwave Conference (LAMC 2016).

E. A. Rojas-Nastrucci, J. Nussbaum, T. M. Weller and N. B. Crane, "Meshed rectangular waveguide for high power, low loss and reduced weight applications," 2016 IEEE MTT-S International Microwave Symposium (IMS), San Francisco, CA, 2016, pp. 1-4.

J. Castro, E. Rojas, A. Ross, T. Weller and J. Wang, "High-k and low-loss thermoplastic composites for Fused Deposition Modeling and their application to 3D-printed Ku-band antennas," 2016 IEEE MTT-S International Microwave Symposium (IMS), San Francisco, CA, 2016, pp. 1-4..

D. Hawatmeh, E. Rojas-Nastrucci, and T. Weller. “A Multi-Material 3D Printing Approach for Conformal Microwave Antennas”. 2016 International Workshop on Antenna Technology. March 2016.

Vera-Lopez, A.L.; Rojas-Nastrucci, E.A.; Cordoba-Erazo, M.; Weller, T.; Papapolymerou, J., "Ka-band characterization and RF design of Acrynolitrile Butadiene Styrene (ABS)," in 2015 IEEE MTT-S International Microwave Symposium (IMS), vol., no., pp.1-4, 17-22 May 2015

Jonathon O‘Brien, Maria Cordoba Erazo, Eduardo Rojas, Juan Castro, Mohamed Abdin, Jing Wang, Gokhan Mumcu, Kenneth Church, Paul Deffenabugh, Thomas Weller. “Miniaturization of Microwave Components and Antennas Using 3D Manufacturing”. 9 th European Conference on Antennas and Propagation (EuCAP 2015). Lisbon, Portugal, April 2015.

Rojas-Nastrucci, E.A.; Weller, T.; Lopez Aida, V.; Fan Cai; Papapolymerou, J., "A study on 3D-printed coplanar waveguide with meshed and finite ground planes," Wireless and Microwave Technology Conference (WAMICON), 2014 IEEE 15th Annual , vol., no., pp.1,3, 6-6 June 2014.

Eduardo A. Rojas-Nastrucci, Ramiro A. Ramirez, Sean T. Murphy, Mike Newton and Thomas M. Weller. “A Direct Digital Manufactured RFID System Applied to Teaching Antenna Theory to Pre-College Students”. International Symposium on Microelectronics (IMAPS 2015) Oct 2015, Vol. 2015.

Juan Castro, Eduardo Rojas, Thomas Weller and Jing Wang, "High-k and Low-Loss Polymer Composites with Co-Fired Nd and Mg-Ca Titanates for 3D RF and Microwave Printed Devices: Fabrication and Characterization" 2015 IEEE 16th Annual Wireless and Microwave Technology Conference (WAMICON), April 2015.

Juan Castro, Eduardo Rojas, Thomas Weller and Jing Wang. “Engineered Nanocomposites for Additive Manufacturing of Microwave Electronics”. International Symposium on Microelectronics (IMAPS 2015) Oct 2015, Vol. 2015.

Ramiro A. Ramirez, Eduardo A. Rojas-Nastrucci, Thomas M. Weller, "3D Tag with Improved Read Range for UHF RFID Applications using Additive Manufacturing" 2015 IEEE 16th Annual Wireless and Microwave Technology Conference (WAMICON), April 2015.

M. F. Córdoba-Erazo, E. A. Rojas-Nastrucci and T. Weller, “Simultaneous RF electrical conductivity and topography mapping of smooth and rough conductive traces using microwave microscopy to identify localized variations”. 2015 IEEE 16th Annual Wireless and Microwave Technology Conference (WAMICON), Cocoa Beach, FL, 2015

Jonathan M. O'Brien, Eduardo Rojas and Thomas M. Weller. “A Switched-Line Phase Shifter Fabricated with Additive Manufacturing”. International Symposium on Microelectronics (IMAPS 2013) Jan 2013, Vol. 2013, No. 1.

María F. Córdoba-Erazo, Eduardo A. Rojas-Nastrucci and Thomas Weller. "Measurement of Electrical Conductivity of Direct Digital Printed Conductive Traces Using Near-Field Microwave Microscopy" International Symposium on Microelectronics (IMAPS 2014), San Diego, CA, October 2014.

Kenneth Church, Xudong Chen, Paul Deffenbaugh, Casey Perkowski, Sam LeBlanc, Eduardo Rojas, Thomas Weller, “Turning Printed Circuit Boards into Printed Circuit Structures using 3D Printing,” 2014 SMTA Conference, August 2014.


2019 National Science Foundation CAREER Award