Constantinos (Constantine) L. Zekios kzekios@fiu.com
PERSONAL Last Name: Zekios
INFORMATION First Name: Constantinos (Constantine)
Father’s Name: Leonidas
Mother’s Name: Maria
Birth Date: Nov. 18, 1985
Citizenship: Greek
CONTACT Florida International University Phone: (+1) 3053482270
INFORMATION Department of ECE, EC 3900 e-mail: kzekios@fiu.edu
Miami, FL, 33174, USA
RESEARCH
INTERESTS Theoretical, Applied and Computational Electromagnetics,
Antenna Theory, Antenna Design, Antenna Arrays Design, Microwave
Engineering, THz, and Photonics
WORK
EXPERIENCE
August 2022 to Present Assistant Professor at Florida International University, FL,
USA, Electrical and Computer Engineering Department
August 2020 to August 2022 Research Assistant Professor at Florida International University, FL,
USA, Electrical and Computer Engineering Department
May 2018 to August 2020 Postdoctoral Associate at Florida International University, FL,
USA, Electrical and Computer Engineering Department
January 2016 to May 2018 Postdoctoral Associate at University of Massachusetts Amherst, MA,
USA, Electrical and Computer Engineering Department
November 2008 to June 2015 Research Associate at Democritus University of Thrace, Greece
Electrical and Computer Engineering Department
EDUCATION
Democritus University of Thrace, Xanthi, Greece
Doctor of Philosophy, Electrical and Computer Engineering
Communication and Satellite Telecommunication Systems specialization
(emphasis on microwaves) Graduate of Democritus University of Thrace,
June 2015 (Grade: Excellent)
Subject: “Electromagnetic Simulation and Eigenanalysis of Three
Dimensional Radiating Structures Based on the Finite Element
Method”.
Democritus University of Thrace, Xanthi, Greece
Master of Science, Electrical and Computer Engineering
Communication and Satellite Telecommunication Systems specialization
(emphasis on microwaves). Graduate of Democritus University of
Thrace, February 2011 (Grade: Excellent)
Subject: “Study and Design of Reverberation Chambers with aid of
Eigenanalysis”.
Democritus University of Thrace, Xanthi, Greece
5 years Diploma, Electrical and Computer Engineering
Communication specialization (emphasis on microwaves) Graduate of
Democritus University of Thrace, November 2008 (GPA: 8.67/10)
Subject: “Electromagnetic Simulation of Closed or Open Three
Dimensional Structures Employing Finite Elements”.
TEACHING
EXPERIENCE
2009-2014: Microwave Theory and Techniques
2009-2011: Radar Systems
2009-2011: Microwave Circuits Design
2009-2011: High Frequency Measurements
2009-2013: Introduction to Electrical Measurements
2010-2013: Applied Thermodynamics
2010-2011: Transmission and Propagation of Radiowaves
2010-2011: Communication Links Designs
2011-2015: Principles of Communication Links Designs
2022-2023: EEL5427C Electromagnetic Modeling of Radio Frequency
Structures
2022-2023: TCN6276 Antennas for Wireless and Body-Centric
Communications
2022-2023: EEL6468 Adaptive and Smart Antennas
RESEARCH
EXPERIENCE
August 2022 to present Assistant Professor at Florida International University, FL, USA
Electrical and Computer Engineering Department
• Developed antennas (e.g., leaky wave antennas, etc.), arrays (e.g.,
reflectarrays, transmitarrays, phased arrays, etc.), multiple input
multiple output communication models, beamforming networks,
frequency selective surfaces, metasurfaces.
• Developed numerical methods, metaheuristic algorithms, and machine
learning models for the study, analysis and design of microwave, THz,
and photonic devices (e.g., resonators, antennas, etc.).
• Co-advised 9 Ph.D. and 1 Postdoc.
August 2022 to August 2022 Research Assistant Professor at Florida International University, FL, USA
Electrical and Computer Engineering Department
• Developed foldable, deployable, reconfigurable and multifunctional
antennas, frequency selective surfaces, arrays, reflectarrays,
transmitarrays.
• Developed computational tools for the analysis and design of
foldable, deployable, reconfigurable and multifunctional antennas.
• Collaborated with Prof. Georgakopoulos for the development and
preparation of 2 proposals, 1 funded from NSF ($365,000) and 1
funded from AFOSR ($1 million).
• Co-advised 8 Ph.D. and 1 undergraduate student.
May 2018 to August 2020 Postdoctoral Associate at Florida International University, FL, USA
Electrical and Computer Engineering Department
• Developed foldable, deployable, reconfigurable and multifunctional
antennas, frequency selective surfaces, arrays, reflectarrays,
transmitarrays.
• Developed computational tools for the analysis and design of
foldable, deployable, reconfigurable and multifunctional antennas.
• Collaborated with Prof. Georgakopoulos for the development and
preparation of 2 proposals, 1 funded from NSF ($100,000) and 1
funded from AFOSR ($4.8 million).
• Co-advised 6 Ph.D. and 6 undergraduate students.
January 2016 to May 2018 Postdoctoral Associate at University of Massachusetts Amherst, MA,
USA
Electrical and Computer Engineering Department
• Developed a Fast Integral Equation (IE) method/Method of Moments
(MoM).
• Developed robust IE solvers for the solution of electrically large
structures.
• Co-advised 4 Ph.D. and 2 Master students.
November 2008 to June 2015 Research Associate at Democritus University of Thrace, Greece
Electrical and Computer Engineering Department
• Developed a Finite Element Method (FEM) code for the solution of
electromagnetic problems.
• Developed hybrid semi-analytical techniques using eigenfunction
expansions and finite elements.
• Developed a characteristic mode analysis tool for the study and design
of radiating structures.
• Analyzed and studied electromagnetic compatibility and
electromagnetic immunity problems.
• Developed a FEM code for the analysis and study of photonic and
THz structures.
• Developed robust solvers for the solution of electrically large
structures.
• Collaborated with Prof. Kyriacou for the development and preparation
of 1 funded proposal.
• Mentored several Ph.D., Master and undergraduate students.
AWARDS/
SCHOLARSHIPS
2023 Recognition for exceptional performance as a Reviewer of the IEEE
Transactions on Antennas and Propagation (May 1, 2022, to April 30,
2023). 200 best reviewers out of 2000 without further ranking.
2020 Recognition for exceptional performance as a Reviewer of the IEEE
Transactions on Antennas and Propagation (May 1, 2019, to April 30,
2020). 50 best reviewers out of 2000 without further ranking.
2019 Recognition for exceptional performance as a Reviewer of the IEEE
Transactions on Antennas and Propagation (May 1, 2018, to April 30,
2019). 50 best reviewers out of 2000 without further ranking.
2008 In the graduate ceremony of November 2008, Award for 1
st
ranking
of the graduates (GPA: 8.67/10)
2008 Undergraduate/Pre-Graduate Scholarship Award from Microwave
Theory and Techniques Society in recognition of academic
achievement and excellence, and outstanding potential for a career
in the field of microwaves and RF
2005-2006 Greek State Scholarships Foundation: Scholarship and
Award for 1
st
ranking in class during 5
th
and 6
th
semesters of
studies (GPA: 9/10)
2004-2005 Greek State Scholarships Foundation: Scholarship and
Award for 2
nd
ranking in class during 3
rd
and 4
th
semesters
of studies (GPA: 7.96/10)
2000 After a contest in writing was chosen, among the Greek students of
high school, for the participation in 5 day-conversation with
students from other European countries in the European Parliament
in Strasbourg.
1998-2003 Ministry of National Education and Religious Affairs:
Award for progress in all Gymnasium and General High
School classes.
SERVICE Peer reviewer for the following journals:
a. IEEE Transactions on Antennas and Propagation
b. IET Microwaves, Antennas & Propagation
Chair of three technical sessions in:
a. 2019 IEEE International Symposium on Antennas and Propagation
and USNC-URSI Radio Science Meeting (Chair in: Reconfigurable
Arrays, Tunable and Reconfigurable Frequency Selective Surfaces,
Wireless Power Transfer)
b. 2020 IEEE International Symposium on Antennas and Propagation
and USNC-URSI Radio Science Meeting (Chair in: Optimization,
Nanoscale and Nonlinear Electromagnetics)
SCIENTIFIC 2004 – today: IEEE Member
ORGANISATIONS 2008 – today: Member of Microwave Theory and Techniques (MTT)
society.
2016 – today: Member of Antennas and Propagation (AP) society.
PATENTS
P1. Constantinos L. Zekios, Stavros V. Georgakopoulos, Muhammad Hamza, “Arrays
with Foldable and Deployable Characteristics,” USPTO Utility Patent US 11,303,092
(date of patent 04/12/2022).
P2. Constantinos L. Zekios, Stavros V. Georgakopoulos, Muhammad Hamza, “Arrays
with Foldable and Deployable Characteristics,” USPTO Utility Patent US 11,056,791
(date of patent 07/06/2021).
P3. Abdul-Sattar Kaddour, Constantinos L. Zekios, Stavros V. Georgakopoulos,
“Reconfigurable Arrays with Multiple Unit Cells,” USPTO Utility Patent US
10,931,022 (date of patent 02/23/2021).
https://patents.google.com/patent/US10931022B1/en
P4. Zekios, C. L., Georgakopoulos, S. V., Nicholas E. Russo, “Multiple Input Multiple
Output Antenna Devices”, USPTO Utility Patent US 10,910,691 (date of patent
2/2/2021). https://patents.google.com/patent/US10910691B1/en
P5. Zekios, C. L., Georgakopoulos, S. V., Reconfigurable and Foldable Multimode
MIMO Antenna, USPTO Utility Patent US 10,658,741 (date of patent 5/19/2020).
https://patents.google.com/patent/US10658741B1/en
P6. Constantinos L. Zekios, Stavros V. Georgakopoulos, Nicholas E. Russo “Foldable,
Deployable and Reconfigurable MIMO antenna arrays,” USPTO Utility Patent US
10,756,412 (date of patent 8/25/2020).
P7. Constantinos L. Zekios, Stavros V. Georgakopoulos, Akash Biswas “Reconfigurable
Origami Passive Arrays,” USPTO Utility Patent US 10,833,392 (date of patent
11/10/2020).
P8. Abdul-Sattar Kaddour, Stavros V. Georgakopoulos, Constantinos L. Zekios,
“Reconfigurable Arrays with Foldable Panels,” USPTO Utility Patent US 10,854,971
(date of patent 12/01/2020).
PUBLICATIONS
Journals
J1. R. E. Sendrea, C. L. Zekios and S. V. Georgakopoulos, "Multi-Fidelity Surrogate
Modeling Based On Analytical Eigenfunction Expansions," in IEEE Transactions on
Antennas and Propagation, vol. 71, no. 2, pp. 1673-1683, Feb. 2023, doi:
10.1109/TAP.2022.3228615.
J2. G. P. Carrara, C. L. Zekios and S. V. Georgakopoulos, "A TM11 High-Order Mode
Leaky Wave Antenna," in IEEE Transactions on Antennas and Propagation, vol. 71,
no. 1, pp. 119-130, Jan. 2023, doi: 10.1109/TAP.2022.3217257.
J3. D. I. Lialios, C. L. Zekios, S. V. Georgakopoulos and G. A. Kyriacou, "A Novel RF
to Millimeter Waves Frequency Translation Scheme for Ultra-Wideband
Beamformers Supporting the Sub-6 GHz Band," in IEEE Transactions on Antennas
and Propagation, vol. 70, no. 12, pp. 11718-11733, Dec. 2022, doi:
10.1109/TAP.2022.3210698.
J4. Muhammad Hamza, Constantinos L. Zekios, and Stavros V. Georgakopoulos, “A
Low Profile Planar Dual-Polarized Tightly Coupled Dipole Reflectarray With 5:1
Bandwidth,” in IEEE Open Journal of Antennas and Propagation, vol. 3, pp. 958-969,
2022, doi: 10.1109/OJAP.2022.3198468.
J5. Biswas, A., Zekios, C.L., Ynchausti, C. et al. An ultra-wideband origami microwave
absorber. Sci Rep 12, 13449 (2022). https://doi.org/10.1038/s41598-022-17648-4
J6. M. R. Khan, C. L. Zekios, S. Bhardwaj and S. V. Georgakopoulos, "Multiobjective
Fitness Functions With Nonlinear Switching for Antenna Optimizations," in IEEE
Open Journal of Antennas and Propagation, vol. 3, pp. 613-626, 2022, doi:
10.1109/OJAP.2022.3178840.
J7. N. E. Russo, C. L. Zekios, and S. V. Georgakopoulos, “MIMO Systems in SmallSat
Swarms: System Characterization with the Introduction of a Channel Model,” in
IEEE Transactions on Antennas and Propagation, vol. 70, no. 9, pp. 8276-8290, Sept.
2022, doi: 10.1109/TAP.2022.3161310.
J8. Paschaloudis, Konstantinos D., Constantinos L. Zekios, Stavros V. Georgakopoulos,
and George A. Kyriacou, “A Finite Element Based Characteristic Mode Analysis”, in
IEEE Open Journal of Antennas and Propagation, vol. 3, pp. 287-303, 2022, doi:
10.1109/OJAP.2022.3150594.
J9. Paschaloudis, Konstantinos D., Constantinos L. Zekios, Georgios C. Trichopoulos,
Filippos Farmakis, and George A. Kyriacou, 2021. “An Eigenmode Study of
Nanoantennas from Terahertz to Optical Frequencies,” Electronics 10, no. 22: 2782.
https://doi.org/10.3390/electronics10222782.
J10. S. V. Georgakopoulos, C. L., Zekios, et al., "Origami Antennas," in IEEE Open
Journal of Antennas and Propagation, vol. 2, pp. 1020-1043, 2021, doi:
10.1109/OJAP.2021.3121102.
J11. M. R. Khan, C. L. Zekios, S. Georgakopoulos and S. Bhardwaj, "Automated
Design and Optimization of Origami Electromagnetic Structures [EM Programmer's
Notebook]," in IEEE Antennas and Propagation Magazine, vol. 63, no. 2, pp. 89-102,
April 2021, doi: 10.1109/MAP.2021.3053962.
J12. N. E. Russo, C. L. Zekios, and S. V. Georgakopoulos, "Decoupling Modes in
Multi-Band Microstrip Patch Antennas," in IEEE Open Journal of Antennas and
Propagation, vol. 2, pp. 118-125, 2021, doi: 10.1109/OJAP.2020.3046458.
J13. Lialios, D.I.; Ntetsikas, N.; Paschaloudis, K.D.; Zekios, C.L.; Georgakopoulos,
S.V.; Kyriacou, G.A. Design of True Time Delay Millimeter Wave Beamformers for
5G Multibeam Phased Arrays. Electronics 2020, 9, 1331. doi:
10.3390/electronics9081331
J14. Biswas, A., Zekios, C.L. & Georgakopoulos, S.V. Transforming single-band
static FSS to dual-band dynamic FSS using origami. Sci Rep 10, 13884 (2020).
https://doi.org/10.1038/s41598-020-70434-y.
J15. Muhammad Hamza, Constantinos L. Zekios, and Stavros V. Georgakopoulos,
“A Thick Origami Reconfigurable and Packable Patch Array with Enhanced Beam
Steering,” in IEEE Antennas and Propagation, vol. 68, no. 5, pp. 3653-3663, May
2020, doi: 10.1109/TAP.2020.2963922.
J16. Kun Bao, Constantinos L. Zekios, and Stavros V. Georgakopoulos,
“Miniaturization of SCMR Systems Using Multilayer Resonators,” in IEEE Access,
vol. 7, pp. 143445-143453, 2019, doi: 10.1109/ACCESS.2019.2945319.
J17. Konstantinos D. Paschaloudis, Constantinos L. Zekios, Laura Ghisa, Peter C.
Allilomes, Kyriakos E. Zoiros, Ammar Sharaiha, Stavros Iezekiel, and George A.
Kyriacou "An Eigenanalysis Study of Tunable THz and Photonic Unbounded
Structures Employing Finite Element Method," in IEEE Photonics Journal, vol. 11,
no. 5, pp. 1-20, Oct. 2019, Art no. 5502920, doi: 10.1109/JPHOT.2019.2935805.
J18. K. Bao, C. L. Zekios and S. V. Georgakopoulos, "A Wearable WPT System on
Flexible Substrates," in IEEE Antennas and Wireless Propagation Letters, vol. 18,
no. 5, pp. 931-935, May 2019, doi: 10.1109/LAWP.2019.2906069.
J19. X. Liu, C. L. Zekios and S. V. Georgakopoulos, "Analysis of a Packable and
Tunable Origami Multi-Radii Helical Antenna," in IEEE Access, vol. 7, pp. 13003-
13014, 2019, doi: 10.1109/ACCESS.2019.2892711.
J20. Constantinos L. Zekios, Peter C. Allilomes, and George A. Kyriacou, "DC and
Imaginary Spurious Modes Suppression for Both Unbounded and Lossy Structures,"
in IEEE Transactions on Microwave Theory and Techniques, vol. 63, no. 7, pp. 2082-
2093, July 2015, doi: 10.1109/TMTT.2015.2430324.
J21. C. L. Zekios, P. C. Allilomes, M. T. Chryssomallis, and G. A. Kyriacou, "Finite
element based eigenanalysis for the study of electrically large lossy cavities and
reverberation chambers," Progress In Electromagnetics Research B, Vol. 61, 269-
296, 2014, doi:10.2528/PIERB14071804
J22. G. A. Kyriacou, C. S. Lavranos, P. C. Allilomes, C. L. Zekios, S. J. Lavdas, and
A. V. Kudrin. "Eigenanalysis of Open Radiating, Periodic, and Curved Waveguide
Structures", Radio Science Bulletin, ISSN 1024-4530, no. 344, pp. 13-31, 2013, doi:
10.23919/URSIRSB.2013.7909924.
J23. C. L. Zekios, P. C. Allilomes, and G. A. Kyriacou, “Eigenanalysis of
Electromagnetic Structures Based on the Finite Element Method”, Applied
Mathematics, 2013, 4, 1009-1022, doi:10.4236/am.2013.47138 Published Online
July 2013
J24. C. L. Zekios, P. C. Allilomes, and G. A. Kyriacou, "Evaluation of eigenmode
quality factor of large complex cavities based on PEC linear finite element
formulation," Electronics Letters, Volume 48, issue22, 25 October 2012, p. 1399 –
1401, doi: 10.1049/el.2012.1852.
Conferences
C1. D.I. Lialios, C. L. Zekios, S. V. Georgakopoulos, and G. A. Kyriacou, “A New
Class of Ultra-Wideband Beamforming Networks for sub-6 GHz Bands” 2022 IEEE
International Symposium on Phased Array Systems & Technology (PAST), Waltham,
MA, USA, 2022, pp. 1-7, doi: 10.1109/PAST49659.2022.9975044. (Selected as a
top 10 finalist in the 2022 IEEE International Symposium on Phased Array
Systems & Technology Student Paper Competition)
C2. A. G. Koutinos, C. L. Zekios, G. A. Kyriakou and S. V. Georgakopoulos,
"Bandwidth Tripling of Triangular Patch Antennas," 2022 IEEE International
Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting
(AP-S/URSI), Denver, CO, USA, 2022, pp. 1772-1773, doi: 10.1109/AP-S/USNC-
URSI47032.2022.9885812.
C3. M. R. Khan, C. L. Zekios, S. Bhardwaj, and S.V. Georgakopoulos, “A
Generalized Approach to Real-Time Performance Estimation of Antenna Types Using
Deep Learning” 2022 IEEE International Symposium on Antennas and Propagation
and USNC-URSI Radio Science Meeting (AP-S/URSI), Denver, CO, USA, 2022, pp.
497-498, doi: 10.1109/AP-S/USNC-URSI47032.2022.9886506
C4. N. E. Russo, C. L. Zekios and S. V. Georgakopoulos, "2-D Sub-Diffraction
Focusing with Concentric Circular Arrays in the Microwave Regime," 2022 IEEE
International Symposium on Antennas and Propagation and USNC-URSI Radio
Science Meeting (AP-S/URSI), 2022, pp. 1230-1231, doi: 10.1109/AP-S/USNC-
URSI47032.2022.9886133.
C5. N. E. Russo, C. L. Zekios, and S. V. Georgakopoulos, “1-D and 2-D Sub-
Diffraction Focusing with Circular Arrays,” 2022 IEEE International Symposium on
Phased Array Systems & Technology (PAST), Waltham, MA, USA, 2022, pp. 1-5,
doi: 10.1109/PAST49659.2022.9975021
C6. M. Hamza, C. L. Zekios and S. V. Georgakopoulos, “An Ultra-Wideband Fully-
Planar Inverted-L Monopole (FILM) Array”, 2022 IEEE International Symposium on
Phased Array Systems & Technology (PAST), Waltham, MA, USA, 2022, pp. 1-4,
doi: 10.1109/PAST49659.2022.9975014.
C7. M. Hamza, C. L. Zekios and S. V. Georgakopoulos, “A K- and V-Band Planar
Dual-Polarized Tightly Coupled Dipole Array”, 2022 IEEE International Symposium
on Phased Array Systems & Technology (PAST), Waltham, MA, USA, 2022, pp. 1-4,
doi: 10.1109/PAST49659.2022.9975014.
C8. M. Hamza, C. L. Zekios and S. V. Georgakopoulos, "Planar Ultra-Wideband
Modular Transmitarray," 2022 IEEE International Symposium on Antennas and
Propagation and USNC-URSI Radio Science Meeting (AP-S/URSI), 2022, pp. 1794-
1795, doi: 10.1109/AP-S/USNC-URSI47032.2022.9886139. (Selected as an
*HONORABLE MENTION* amongst 245 papers submitted to the 2022 IEEE
AP-S Student Paper Competition)
C9. G. P. Carrara, C. L. Zekios, and S. V. Georgakopoulos, “A mm-Wave High-Order
Mode Leaky Wave Antenna,” 2022 IEEE International Symposium on Antennas and
Propagation and USNC-URSI Radio Science Meeting (AP-S/URSI), 2022, pp. 315-
316, doi: 10.1109/AP-S/USNC-URSI47032.2022.9886044.
C10. A. Biswas, C. L. Zekios and S. V. Georgakopoulos, “An Ultra-Fast Method for
Designing Phase Shifting Surfaces,” 2022 IEEE International Symposium on
Antennas and Propagation and USNC-URSI Radio Science Meeting (AP-S/URSI),
2022, pp. 567-568, doi: 10.1109/AP-S/USNC-URSI47032.2022.9887258. (Selected
as an *HONORABLE MENTION* amongst 245 papers submitted to the 2022
IEEE AP-S Student Paper Competition)
C11. R. E. Sendrea, C. L. Zekios, and S. V. Georgakopoulos, “A Deep-Learning
Characteristic Modes Classification Model for Patch Antennas,” 2022 IEEE
International Symposium on Antennas and Propagation and USNC-URSI Radio
Science Meeting, Denver, CO, USA, 2022, pp. 1-2, doi: 10.1109/AP-S/USNC-
URSI47032.2022.9886407.
C12. A. J. Rubio, C. L. Zekios, A. -S. Kaddour and S. V. Georgakopoulos,
“Reconfigurable Multi-Mode OAM Reflectarray Synthesis With Reduced Number of
Active Elements,” 2022 IEEE International Symposium on Antennas and
Propagation and USNC-URSI Radio Science Meeting (AP-S/URSI), 2022, pp. 1582-
1583, doi: 10.1109/AP-S/USNC-URSI47032.2022.9886293.
C13. D. I. Lialios, C. L. Zekios, and S. V. Georgakopoulos, "A Planar True Time
Delay 2D Beamformer," 2022 IEEE International Symposium on Antennas and
Propagation and USNC-URSI Radio Science Meeting (AP-S/URSI), 2022, pp. 1898-
1899, doi: 10.1109/AP-S/USNC-URSI47032.2022.9886245. (Selected as an
*HONORABLE MENTION* amongst 245 papers submitted to the 2022 IEEE
AP-S Student Paper Competition)
C14. N. E. Russo, C. L. Zekios, and S. V. Georgakopoulos, "A Compact Multi-Band
MIMO Antenna," 2021 IEEE International Symposium on Antennas and Propagation
and North American Radio Science Meeting (APS/URSI), Marina Bay Sands,
Singapore, Dec. 4-10, 2021, pp. 1387-1388, doi:
10.1109/APS/URSI47566.2021.9704339.
C15. G. P. Carrara, C. L. Zekios, and S. V. Georgakopoulos, “A High-Order Mode
Leaky Wave Antenna,” 2021 IEEE International Symposium on Antennas and
Propagation and North American Radio Science Meeting (APS/URSI), Marina Bay
Sands, Singapore, Dec. 4-10, 2021, pp. 1533-1534, doi:
10.1109/APS/URSI47566.2021.9704446.
C16. G. P. Carrara, C. L. Zekios, and S. V. Georgakopoulos, “A Dual High-Order
Mode Leaky Wave Antenna,” 2021 IEEE International Symposium on Antennas and
Propagation and North American Radio Science Meeting (APS/URSI), Marina Bay
Sands, Singapore, Dec. 4-10, 2021, pp. 1535-1536, doi:
10.1109/APS/URSI47566.2021.9704588.
C17. M. Hamza, C. L. Zekios and S. V. Georgakopoulos, “A Planar Ultra-Wideband
Dual Polarized Reflectarray,” 2021 IEEE International Symposium on Antennas and
Propagation and North American Radio Science Meeting (APS/URSI), Marina Bay
Sands, Singapore, December 4-10, 2021, pp. 977-978, doi:
10.1109/APS/URSI47566.2021.9703846. (Selected as an *HONORABLE
MENTION* amongst 245 papers submitted to the 2021 IEEE AP-S Student
Paper Competition).
C18. Dimitrios I. Lialios, Constantinos L. Zekios, Stavros V. Georgakopoulos, "A
Compact mmWave SIW Blass Matrix", 2021 IEEE International Symposium on
Antennas and Propagation and North American Radio Science Meeting (APS/URSI),
Marina Bay Sands, Singapore, December 4-10, 2021, pp. 961-962, doi:
10.1109/APS/URSI47566.2021.9703822.
C19. R. E. Sendrea, C. L. Zekios, and S. V. Georgakopoulos, “A Multi-Fidelity
Surrogate Optimization Method Based on Analytical Models,” 2021 IEEE MTT-S
International Microwave Symposium (IMS), Atlanta, GA, USA, 2021, doi:
10.1109/IMS19712.2021.9574986
C20. M. Hamza, C. L. Zekios and S. V. Georgakopoulos, “A Physically
Reconfigurable 1×8 Monolithic Thick Origami Array” 2020/2021 IEEE Wireless and
Microwave Technology Conference (WAMICON), Clearwater Beach, FL, USA, Apr.
28-29, 2021, pp. 1-3, doi: 10.1109/WAMICON47156.2021.9443619.
C21. A. Biswas, C. L. Zekios and S. V. Georgakopoulos, “An Ultra-Wideband
Origami Microwave Absorber” 2020/2021 IEEE Wireless and Microwave Technology
Conference (WAMICON), Clearwater Beach, FL, USA, Apr. 28-29, 2021, pp. 1-4,
doi: 10.1109/WAMICON47156.2021.9443602. (3rd place award in the Best Student
Paper competition).
C22. M. R. Khan, S. Bhardwaj, C. L. Zekios, and S. V. Georgakopoulos, "Random
Forest-Based Surrogate Modeling in RF Optimizations," 2021 USNC-URSI National
Radio Science Meeting (NRSM), Boulder, CO, USA, 2021, pp. 99.
C23. N. E. Russo, C. L. Zekios, S. V. Georgakopoulos, H. S. An, A. K. Mishra and R.
F. Shepherd, “Design and Fabrication of an Origami Multimode Ring Antenna,” 2021
United States National Committee of URSI National Radio Science Meeting (USNC-
URSI NRSM), Boulder, CO, USA, 2021, pp. 246-247, doi: 10.23919/USNC-
URSINRSM51531.2021.9336435.
C24. M. Hamza, C. L. Zekios and S. V. Georgakopoulos, "An Ultra-Wideband Dually
Polarized Transmitarray," 2020 IEEE International Symposium on Antennas and
Propagation and North American Radio Science Meeting, 2020, pp. 479-480, doi:
10.1109/IEEECONF35879.2020.9329494
C25. A. Biswas, C. L. Zekios and S. V. Georgakopoulos, "An Origami Inspired
Polarization-Insensitive FSS," 2020 IEEE International Symposium on Antennas and
Propagation and North American Radio Science Meeting, 2020, pp. 881-882, doi:
10.1109/IEEECONF35879.2020.9329813
C26. N. E. Russo, C. L. Zekios, and S. V. Georgakopoulos, “A Novel Channel Model
for Clustered CubeSat Communication,” 2020 IEEE International Symposium on
Antennas and Propagation and North American Radio Science Meeting, Montreal,
QC, Canada, 2020, pp. 1741-1742, doi: 10.1109/IEEECONF35879.2020.9329904
C27. N. E. Russo, C. L. Zekios and S. V. Georgakopoulos, "A Quad-Band MIMO
Patch Antenna," 2020 IEEE International Symposium on Antennas and Propagation
and North American Radio Science Meeting, 2020, pp. 1975-1976, doi:
10.1109/IEEECONF35879.2020.9330326
C28. R. Sendrea, C. L. Zekios, and S. V. Georgakopoulos, “Surrogate Modeling of
Origami Antennas,” 2020 IEEE International Symposium on Antennas and
Propagation and USNC-URSI Radio Science Meeting, [accepted]
C29. R. Sendrea, G. Carrara, N. Russo, C. L. Zekios, and S. V. Georgakopoulos, “RF
Connectors for Origami Antennas,” 2020 Emerging Researchers National Conference
in STEM, Washington D.C.
C30. B. Gonzalez, R. Sendrea, N. Russo, C. L. Zekios, and S. V. Georgakopoulos,
“Optimization of Origami Antennas,” 2020 Emerging Researchers National
Conference in STEM, Washington D.C. (first-place award in the undergraduate
poster presentation category)
C31. M. R. Khan, C. L. Zekios, S. Bhardwaj and S. V. Georgakopoulos, "Multi-
Objective Optimization of an Origami Yagi-Uda Antenna Using an Adaptive Fitness
Function," 2020 IEEE International Symposium on Antennas and Propagation and
North American Radio Science Meeting, 2020, pp. 2039-2040, doi:
10.1109/IEEECONF35879.2020.9329600
C32. D. Lialios et al., "A mm-Wave True-Time-Delay Beamformer Architecture based
on a Blass Matrix Topology," 2020 IEEE International Symposium on Antennas and
Propagation and North American Radio Science Meeting, 2020, pp. 1609-1610, doi:
10.1109/IEEECONF35879.2020.9329535
C33. D. I. Lialios, C. L. Zekios and S. V. Georgakopoulos, "Design of a mm-Wave
Double-Sided Substrate Blass Matrix Beamforming Network," 2021 IEEE 21st
Annual Wireless and Microwave Technology Conference (WAMICON), Sand Key,
FL, USA, 2021, pp. 1-4, doi: 10.1109/WAMICON47156.2021.9443621.
C34. Gian Carrara, Ricardo Sendrea, Nicholas E. Russo, Constantinos L. Zekios, and
Stavros V. Georgakopoulos, “A Deployable and Reconfigurable Origami Antenna for
Extended Mobile Range,” 2020 Emerging Researchers National (ERN) Conference.
C35. G. P. Carrara, M. Hamza, C. L. Zekios and S. V. Georgakopoulos, "A Thick
Origami Traveling Wave Antenna," 2020 International Applied Computational
Electromagnetics Society Symposium (ACES), 2020, pp. 1-2, doi:
10.23919/ACES49320.2020.9196171
C36. G. P. Carrara, C. L. Zekios and S. V. Georgakopoulos, "Dispersion
Characteristics of Bent Radiating Waveguides," 2020 IEEE International Symposium
on Antennas and Propagation and North American Radio Science Meeting, 2020, pp.
477-478, doi: 10.1109/IEEECONF35879.2020.9330134
C37. A. -S. Kaddour, C. L. Zekios and S. V. Georgakapoulos, “A Reconfigurable
Origami Reflectarray,” 2020 14th European Conference on Antennas and
Propagation (EuCAP), Copenhagen, Denmark, 2020, pp. 1-4, doi:
10.23919/EuCAP48036.2020.9135383
C38. A. -S. Kaddour, C. L. Zekios and S. V. Georgakapoulos, “A Reconfigurable
Origami Reflectarray,” 2020 14th European Conference on Antennas and
Propagation (EuCAP), Copenhagen, Denmark, 2020, pp. 1-4, doi:
10.23919/EuCAP48036.2020.9135383
C39. Stavros V. Georgakopoulos, and Constantinos L. Zekios, “An Overview of
Origami Antennas, 2020 IEEE International Symposium on Antennas and
Propagation and North American Radio Science Meeting, Montreal, Quebec, Canada
2020.
C40. Konstantina Mylonidou, Anastasios Koutinos, Konstantinos Paschaloudis,
Klearchos Samaras, Diego Caratelli, Ronis Maximidis, Konstantinos Zekios, and
George Kyriacou, “Design of a tightly coupled parallel dipoles phased array in the
presence of the Human body, based on port impedance characteristic modes,” 2020
IEEE International Symposium on Antennas and Propagation and North American
Radio Science Meeting, 2020, pp. 1811-1812, doi:
10.1109/IEEECONF35879.2020.9329455
C41. Zekios, C.L., Liu, X., Moshtaghzadeh, M., Izadpanahi, E., Radnezhad, H.R.,
Mardanpour, P., and Georgakopoulos, S.V., “Electromagnetic and Mechanical
Analysis of an Origami Helical Antenna Encapsulated by Fabric,” Proceedings of the
ASME 2019 International Design Engineering Technical Conferences and Computers
and Information in Engineering Conference. Volume 5B: 43rd Mechanisms and
Robotics Conference. Anaheim, California, USA. August 18–21, 2019.
V05BT07A045. ASME. https://doi.org/10.1115/DETC2019-98072.
C42. Biswas, A., Zekios, C.L. and Georgakopoulos, S.V., “A Dual-Band Origami
FSS,” 2019 IEEE International Symposium on Antennas and Propagation and USNC-
URSI Radio Science Meeting, Atlanta, GA, USA, 2019, pp. 2023-2024, doi:
10.1109/APUSNCURSINRSM.2019.8888873.
C43. Biswas, A., Zekios, C.L. and Georgakopoulos, S.V. (2019). A Tilted Jerusalem-
Cross FSS On A Miura-Ori. 2019 International Workshop on Antenna Technology
(iWAT).
C44. Biswas, A., Hamza, M., Zekios, C.L. and Georgakopoulos, S. V., “Radar Cross
Section Reduction of A Foldable Microstrip Patch Array,” 2019 IEEE International
Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting,
Atlanta, GA, USA, 2019, pp. 1695-1696, doi:
10.1109/APUSNCURSINRSM.2019.8888954.
C45. Carrara, G., Russo, N., Zekios, C.L., and Georgakopoulos, S.V., “A Deployable
and Reconfigurable Origami Antenna for Extended Mobile Range,” 2019 IEEE
International Symposium on Antennas and Propagation and USNC-URSI Radio
Science Meeting, Atlanta, GA, USA, 2019, pp. 453-454, doi:
10.1109/APUSNCURSINRSM.2019.8889294
C46. Hamza, M., Zekios, C.L. and Georgakopoulos, S.V., “Thick Origami Based
Foldable Patch Antenna Array,” 2019 International Workshop on Antenna Technology
(iWAT), 2019, pp. 1-2, doi: 10.1109/iWAT45370.2019.9369273.
C47. Hamza, M., Zekios, C.L. and Georgakopoulos, S.V., “A Thick Origami Four-
Patch Array,” 2019 IEEE International Symposium on Antennas and Propagation and
USNC-URSI Radio Science Meeting, Atlanta, GA, USA, 2019, pp. 1141-1142, doi:
10.1109/APUSNCURSINRSM.2019.8888513.
C48. Khan, M.R., Zekios, C.L., Bhardwaj, S., Georgakopoulos, S.V., “Origami
Enabled Frequency Reconfigurable Dipole Antenna,” 2019 IEEE International
Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting,
Atlanta, GA, USA, 2019, pp. 901-902, doi:
10.1109/APUSNCURSINRSM.2019.8889002
C49. Khan, M.R., Zekios, C.L., Georgakopoulos, S.V., Bhardwaj, S., (2019).
Automated CAD and Modeling of Origami Structures for Reconfigurable Antenna
Applications. 2019 International Applied Computational Electromagnetics Society
Symposium (ACES), Miami, FL, 2019.
C50. Russo, N.E., Zekios, C.L., and Georgakopoulos, S.V, “Capacity Reconfigurable
Origami Enabled MIMO Antenna,” 2019 United States National Committee of
URSI National Radio Science Meeting (USNC-URSI NRSM), Boulder, CO, USA,
2019, pp. 1-2, doi: 10.23919/USNC-URSI-NRSM.2019.8712870.
C51. Russo, N.E., Zekios, C.L., and Georgakopoulos, S.V. (2019). A Study of the
Radiation Characteristics of an Origami Enabled MIMO Antenna. 2019 IEEE
International Workshop on Antenna Technology (iWAT), Miami, FL, 2019.
C52. Russo, N.E., Zekios, C.L., and Georgakopoulos, S.V. (2019). An Origami Based
Capacity Resilient and Reconfigurable MIMO System. 2019 International Applied
Computational Electromagnetics Society Symposium (ACES), Miami, FL, 2019.
C53. Russo, N.E., Zekios, C.L., Georgakopoulos, S.V. (2019). A Capacity
Reconfigurable Multimode Origami MIMO Antenna. 2019 United States National
Committee of URSI National Radio Science Meeting (USNC-URSI NRSM),
Atlanta, GA, 2019.
C54. Mahmoud Sharafi Masouleh, Daerhan Lin, Constantinos L. Zekios, Stavros V.
Georgakopoulos, Wireless Power Transfer and High Data Rate Communication
Using Load-Shift Keying Modulation. 2019 International Workshop on Antenna
Technology (iWAT), Miami, FL, USA, 2019, pp. 166-168, doi:
10.1109/IWAT.2019.8730571.
C55. Mahmoud Sharafi Masouleh, Constantinos L. Zekios, Stavros V. Georgakopoulos,
Simultaneous High Data Rate Communication and Wireless Power Transmission
Through Highly Efficient Coplanar Link, 2019 IEEE International Symposium on
Antennas and Propagation and USNC-URSI Radio Science Meeting, Atlanta, GA,
USA, 2019, pp. 1797-1798, doi: 10.1109/APUSNCURSINRSM.2019.8889310.
C56. M. S. Masouleh, C. L. Zekios and S. V. Georgakopoulos, "Simultaneous Wireless
Power & Data Transmission for Wearable Applications," 2019 IEEE International
Symposium on Antennas and Propagation and USNC-URSI Radio Science
Meeting, Atlanta, GA, USA, 2019, pp. 1801-1802, doi:
10.1109/APUSNCURSINRSM.2019.8889276.
C57. K. D. Paschaloudis, C. L. Zekios, P. C. Allilomes, G. A. Kyriacou. An Eigenmode
Study of Tunable THz Nanoantennas, 2019 IEEE International Workshop on
Antenna Technology (iWAT), Miami, FL, 2019.
C58. Constantinos Zekios, Marinos N. Vouvakis, “On the Randomized Cross
Approximation of EFIE Method of Moments,” 2018 IEEE International
Symposium on Antennas and Propagation & USNC/URSI National Radio Science
Meeting, 2018, pp. 2497-2498, doi: 10.1109/APUSNCURSINRSM.2018.8609221
C59. Ioannis Kyriakou, Constantinos Zekios, Marinos N. Vouvakis, “Singular
Integration in BEM by Interpolation: The MFIE Case,” 2018 IEEE International
Symposium on Antennas and Propagation and USNC-URSI Radio Science
Meeting, 8-13 July 2018, Boston, Massachusetts
C60. Ioannis Kyriakou, Constantinos Zekios, Marinos N. Vouvakis, “Singular
Integration in BEM by Interpolation: The EFIE Case,” 2018 IEEE International
Symposium on Antennas and Propagation and USNC-URSI Radio Science
Meeting, 8-13 July 2018, Boston, Massachusetts
C61. C. L. Zekios and M. N. Vouvakis, "Fast integral equation solvers based on the
randomized cross approximation," 2018 International Applied Computational
Electromagnetics Society Symposium (ACES), 2018, pp. 1-2, doi:
10.23919/ROPACES.2018.8364198.
C62. Konstantinos D. Paschaloudis, Constantinos L. Zekios, Peter C. Allilomes, and
George A. Kyriacou, “A Finite Element based Eigen-analysis of THz
Nanoantennas,” IMS 2017, 978-1-5090-6360-4/17, Hawaii, Honolulu.
C63. Panagiotis K. Gkonis, Andrew P. Kapsalis, Dimirta I. Kaklamani, Iakovos S.
Venieris, Constantinos L. Zekios, Michael T. Chryssomallis, and George A.
Kyriacou, “Reducing Transmission Complexity in MIMOWCDMA Networks
employing Principal Component Analysis,” International Workshop on Antenna
Technology: Small Antennas, Innovative Structures, and Applications (iWAT), 1-3
March 2017.
C64. Konstantinos D. Paschaloudis, Constantinos L. Zekios, Peter C. Allilomes, and
George A. Kyriacou, “An eigenanalysis study of photonic-THz tunable ring
resonators and phase shifters employing finite element method,” 36th ESA antenna
workshop, 6-9 October, 2016.
C65. R. T. Maximids, C. Zekios, A. Peristerianos, K. Dervos, and G. A. Kyriacou,
“Multiple Input Antenna with Polarization Diversity Design Employing the
Characteristic Mode Eigenanalysis,” 36th ESA antenna workshop, 6-9 October,
2016.
C66. C. L. Zekios, D. G. Makris, R. T. Maximidis, P. C. Allilomes and G. A. Kyriacou,
"A characteristic mode analysis of parallel resonances exploiting the finite element
scheme," 2015 European Microwave Conference (EuMC), 2015, pp. 179-182, doi:
10.1109/EuMC.2015.7345729.
C67. Constantinos L. Zekios, Peter C. Allilomes, and George A. Kyriacou, “An inner
outer iteration scheme for the spurious free solution of polynomial eigenvalue
problems of electrically large structure,” EuMW Paris Sept., 2015.
C68. K. Zekios, P. C. Allilomes, C. S. Lavranos, T. Kaifas, P. C. Theofanopoulos, X.
Mitsalas, R. Maximidis, A. Koutinos, G. Ioannopoulos, P. K. Gkonis, A. Kapsalis,
E. Vafiades, K. Zoiros, A. Kudrin, G. Granet, I. S. Venieris, D. I. Kaklamani, C.
Dervos, M. T. Chrysomalis and G. A. Kyriacou, “Analytical and Numerical
Eigenanalysis of Electromagnetic Structures: A Review,” EuMW, Paris, Sept. 2015.
C69. Andreas P. Kapsalis, Panagiotis K. Gkonis, Constantinos L. Zekios, Dimitra I.
Kaklamani, Iakovos S. Venieris, and George A. Kyriakou, “An Intelligent Platform
for Effective Management of Time-consuming Electromagnetic Simulation
Problems,” PIERS, Prague, 06-09 July 2015.
C70. R. T. Maximidis, K. L. Zekios, T. N. Kaifas, E. E. Vafiadis, A. V. Kudrin, and G. A.
Kyriacou, “Printed antennas studies based on equivalent magnetic current
characteristic modes”, to be presented in URSI AT-RASC, 18-22 May 2015.
C71. C. L. Zekios, D. Makris, R. T. Maximidis and G. A. Kyriacou, "Characteristic
mode analysis of open radiating structures based on Finite Element Method," 2015
1st URSI Atlantic Radio Science Conference (URSI AT-RASC), 2015, pp. 1-1, doi:
10.1109/URSI-AT-RASC.2015.7302960.
C72. C. Zekios, P. Allilomes, G. Kyriacou, “Eigenanalysis of Photonic Structures Based
on Finite Element with Efficient Suppression of Spurious Modes,” ICCEM 2015,
Hong Kong, pp. 129-131, Feb. 2015.
C73. C. Zekios, P. Allilomes, G. Kyriacou, “Eigenanalysis of Open-Radiating
Microwave Structures with Efficient Suppression of Spurious Modes,” ICCEM
2015, Hong Kong, pp. 132-134, Feb. 2015.
C74. T. N. Kaifas, E. Vafiadis, R. Maximidis, C. Zekios, G. Kyriacou, “Exploiting
characteristic mode theory for the design of a chipless RFID tag” Antennas and
Propagation Conference (LAPC), 2014 Loughborough, pp. 644-648, 10-11 Nov.
2014.
C75. P. K. Gkonis, A. Kapsalis, K. Zekios, D. I. Kaklamani, I. S. Venieris, M.
Chrysomallis, G. Kyriacou, “Performance evaluation of MIMO-WCDMA
networks employing Principal Component Analysis at the reception,” Antennas and
Propagation Conference (LAPC), 2014 Loughborough, pp. 289-292, 10-11 Nov.
2014.
C76. C. Zekios, P. Allilomes, M. Chryssomallis, P. Gkonis, I. Venieris and G. Kyriacou,
"A Finite Element eigenanalysis of electrically large THz and photonic structures,"
The 8th European Conference on Antennas and Propagation (EuCAP 2014), 2014,
pp. 3331-3334, doi: 10.1109/EuCAP.2014.6902541. (proposed for best paper
award)
C77. R. T. Maximidis, C. L. Zekios, T. N. Kaifas, E. E. Vafiadis, and G. A. Kyriacou,
“Characteristic Mode Analysis of Composite Metal-Dielectric Structure, based on
Surface Integral Equation/Moment Method,” 8th European Conference on
Antennas and Propagation, April 06-11, 2014.
C78. C. L. Zekios, P. C. Allilomes, A. V. Kudrin and G. A. Kyriacou, “An eigenvalue
Hybrid FEM formulation for Three Dimensional Open Cavities,” Progress in
Electromagnetics Research Symposium (PIERS), Moscow, August 19-23, 2012.
C79. P. C. Allilomes, C. L. Zekios, S. Iezekiel and G. A. Kyriacou, “Toward an
Eigenanalysis Study of Arbitrarily Shaped Photonic Ring Resonators,” Progress in
Electromagnetics Research Symposium (PIERS), Moscow, August 19-23, 2012.
C80. R. T. Maximidis, C. L. Zekios, P. C. Allilomes, A. V. Kudrin, and G. A. Kyriacou,
“A Characteristic mode eigenanalysis exploiting FEM features,” Progress in
Electromagnetics Research Symposium (PIERS), Moscow, August 19-23, 2012.
C81. C. L. Zekios, P. C. Allilomes, G. A. Kyriacou, “A Hybrid Domain Decomposition
and Truncation Method of Eigenfunction Expansion for the Analysis of Closed
Cavities,” ICEAA-IEEE APWC International Conference on Electromagnetics in
Advanced Applications, Torino, Italy, pp. 1245-1248, Sept. 2011.
C82. P. C. Allilomes, C. L. Zekios, A. N. Stafyllidis and G. A. Kyriacou, “A Novel
Leaky Mode and Mode Coupling Effects Occurring in Finite Substrate Microstrip
Lines And Patch Antennas,” ICEAA-IEEE APWC International Conference on
Electromagnetics in Advanced Applications, Torino, Italy, pp. 1257-1260, Sept.
2011
C83. G. A. Kyriacou, C. L. Zekios, S. J. Lavdas, C. S. Lavranos and P. C. Allilomes,
“Eigenanalysis of Arbitrarily Shaped 2-D and 3-D Closed and Open-Radiating
Structures: A Review,” ICEAA-IEEE APWC International Conference on
Electromagnetics in Advanced Applications, Torino, Italy, pp. 339-342, Sept. 2011.
C84. C. L. Zekios, P. C. Allilomes, G. A. Kyriacou, “Eigenfunction Expansion for the
Analysis of Closed Cavities,” Loughborough Antennas and Propagation
Conference, pp. 537-540, Nov. 2010.
C85. C. L. Zekios, P. C. Allilomes, G. A. Kyriacou, “A Finite Element Eigenanalysis of
Arbitrary Loaded Cavities Including Conductor Losses,” 32
nd
ESA Antenna
Workshop on Antennas for Space Applications, Noordwijk, The Netherlands, Oct.
2010.
C86. R. Maximov, C. Zekios, G. Kyriacou, “MIMO Antenna Design Exploiting the
Characteristic Modes Eigenanalysis,” 32
nd
ESA Antenna Workshop on Antennas for
Space Applications, Noordwijk, The Netherlands, Oct. 2010.
C87. C. L. Zekios, P. C. Allilomes, C. S. Lavranos and G. A. Kyriacou, "A Three
Dimensional Finite Element Eigenanalysis of Reverberation Chambers", In
proceedings of 2009 EMC Europe Workshop Materials in Applications, Athens, 1-
12 June, 2009.
