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Από το 1992 εργάζεται ως ερευνητής στο Εργαστήριο Ραδιοεπικοινωνιών (ΕΡα) του ΑΠΘ. Από το 2002 έως το 2014 εργάστηκε στο τμήμα Φυσικής του ΑΠΘ με αντικείμενο την διοικητική διαχείριση και γραμματειακή υποστήριξη του ΠΜΣ Ηλεκτρονικής Φυσικής (Ραδιοηλεκτρολογίας). Από το 2004 συμμετέχει στο διδακτικό προσωπικό του ίδιου ΠΜΣ Ηλεκτρονικής Φυσικής (Ραδιοηλεκτρολογίας) ενώ από το 2014 ανήκει στο Εργαστηριακό Διδακτικό Προσωπικό (ΕΔΙΠ) του τμήματος Φυσικής. Τα ερευνητικά του ενδιαφέροντα περιλαμβάνουν τα συστήματα κυματοδήγησης, τη σχεδίαση κεραιών, τις ασύρματες επικοινωνίες, τις μετρήσεις RF και τις οπτικές επικοινωνίες.
Μέλος επιστημονικών ενώσεων
Εργασίες - Συνεισφορά σε βιβλίο 1. Numerical Modelling of Erbium Doped Fibre Amplifiers, Diploma thesis, Dept. of Electronics Systems Eng., University of Essex, U.K., 1992. 2. Bέλτιστη Σχεδίαση Στοιχειοκεραιών Dolph-Chebyshev υπό προϋποθέσεις, Διπλωματική εργασία, Μεταπτυχιακό Τμήμα Ηλεκτρονικής Φυσικής (Ραδιοηλεκτρολογίας), Α.Π.Θ., 1995. 3. Τηλεπικοινωνιακά Συστήματα Κυματοδήγησης (Μικροταινιακές Δομές), Διδακτορική Διατριβή, Τμήμα Φυσικής, Α.Π.Θ., 2001.
4.
Προσομοίωση Ενισχυτών Οπτικών Ινών,
Κεφ. 18 από το βιβλίο «Επικοινωνιακά Συστήματα με Οπτικές Ίνες», Α.
Αλεξανδρή, Εκδ. Τζιόλα, 2010.
Δημοσιεύσεις - Ανακοινώσεις Α. Δημοσιεύσεις σε Διεθνή Περιοδικά με Κριτές 1. J.N.Sahalos, E.E. Vafiadis, T.S. Samaras, D.G. Babas and S.S. Koukourlis, EM Field Measurements in the Vicinity of an Antenna Park for Radiation Hazard Pupsoses, IEEE Trans. on Broadcasting, Vol. 41, No.4, pp. 130-135, Dec. 1995. 2. C. Mertzianidis, S. Koukourlis, Th. Samaras, D. Babas and J.N. Sahalos, Time Domain Analysis of Microstrip Systems Using FD-FFT and FDTD Methods, Balkan Physics Letters, Vol. 4, No. 4, pp 206-213, Oct. 1996. 3. T. Samaras, D. Babas, E. Vafiadis and J. Sahalos, Measurements of the Electromagnetic Radiation from a BTS for Radiation Hazard Purposes, Journal of Applied Electromagnetism, Vol. 5, No. 1, pp. 53-62, Jan 2003. 4. G. Miaris, T. Kaifas, Z. Zaharis, D. Babas, E. Vafiadis, T. Samaras and J.N. Sahalos, Design of Radiation - Emission Measurements of an Air Traffic Surveillance Radar, IEEE Antennas and Propagation Magazine, Vol. 45, Νο. 4, pp. 35-46, Aug 2003. 5. D.G. Babas and J.N. Sahalos, Synthesis Method of Series-Fed Microstrip Antenna Arrays, Electronics Letters, Vol. 43, Issue 2, pp. 78-80, Jan 2007. 6. D.G. Babas and J.N. Sahalos, On the Design of Chebyshev Endfire Arrays Subject to a Performance Index, Electrical Engineering, Springer, vol. 90, no. 2, DOI:10.1007/s00202-007-0059-1, Dec 2007. 7. Design of Planar Arrays with Reduced Non-uniform Excitation Subject to Constraints on the Resulting Pattern and the Directivity, T.N. Kaifas, D.G. Babas, J.N. Sahalos, IEEE Trans. Antennas and Propag., Vol. 57, Is. 8, pp. 2270-2278, Aug. 2009, DOI: 10.1109/TAP.2009.2024484. 8.. On the Design of Direct Radiating Antenna Arrays with Reduced Number of Controls for Satellite Communications, Th. Kaifas, K. Siakavara, D. Babas, G. Miaris, E. Vafiadis, J.N. Sahalos, Mobile Lightweight Wireless Systems, F. Granelli, C. Skianis, P. Chatzimisios, Y. Xiao, S. Redana (Eds.) (revised selected papers), LNICST 13, ICST Institute for Computer Sciences, Social - Informatics and Telecommunications Engineering, Springer, pp. 420-429, 2009. 9. Aperiodic Array Layout Optimization by the Constraint Relaxation Approach, T.N. Kaifas, D.G. Babas, D.S. Miaris, K. Siakavara, E.E. Vafiadis and J.N. Sahalos, IEEE Trans. Antennas and Propag., Vol. 60, Issue 1, pp. 148-163, DOI: 10.1109/TAP.2011.2167901, Jan 2012. 10. A Stochastic Study of Large Arrays Related to the Number of Electrically Large Aperture Radiators, T.N. Kaifas, D.G. Babas, G.S. Miaris, E. Vafiadis, K. Siakavara, G. Toso and J. N. Sahalos, IEEE Trans. Antennas and Propag., Vol. 62, Issue 7, pp. 3520-3533, DOI:10.1109/TAP.2014.2316285, July 2014.
11.
Μultibeam
Antennas for Global Satellite Coverage: Theory and Design,
T.N. Kaifas, D.G. Babas, G. Toso and J. N. Sahalos, IET
Microwaves, Antennas & Propagation, Special Issue: Millimetre Wave
Systems, Circuits and Antenna Integration Challenges for Broadband
Everywhere, 10 pages, DOI:10.1049/iet-map.2015.0811,
Aug 2016.
Β. Δημοσιεύσεις σε Πρακτικά Διεθνών Συνεδρίων με Κριτές 1. On the Design of a new Chebyshev Array subject to constraint on Radiation Efficiency Index, D.G. Babas and J.N. Sahalos, Proceedings of 8th International Symposium on Theoretical Electrical Engineering (ISTET), Thessaloniki - Greece, pp. 117-120, Sep. 1995. 2. A Design Method of Nonuniformly Spaced Series-Fed Microstrip Arrays, D.G. Babas, E.E. Vafiadis and J.N. Sahalos, Proc. of the 7th International Conference on Advances in Communications and Control (COMCON7) - Telecommunications /Signal Processing, pp.193-204, Athens - Greece, June 1999. 3. Nonuniformly Spaced Series-Fed Microstrip Antenna Arrays: a Design Approach, D.G. Babas, E.E. Vafiadis and J.N. Sahalos, Proc. of the AP2000 Millenium Conference on Antennas and Propagation (electronic format), Davos - Switzerland, Apr. 2000. 4. Spectrum and Radiation Emission Survey in the Vicinity of PSR and MSSR Radar, G. Miaris, T. Kaifas, Z. Zaharis, D. Babas, E. Vafiadis, T. Samaras and J.N. Sahalos, XXVIIth General Assembly of the International Union of Radio Science (URSI), paper 1079 (electronic format), Maastricht - Netherlands, Aug. 2002. 5. Emissions Monitoring in the Vicinity of a Terminal Area Radar, T. Samaras, G. Miaris, T. Kaifas, Z. Zaharis, D. Babas, E. Vafiadis and J. Sahalos, Proc. of the 2003 IEEE Intnl. Symposium on EMC, Istanbul - Turkey, May 2003 6. Chebyshev Array Optimization under a Nonlinear Constraint, D.G. Babas and J.N. Sahalos, Proc. of the Mediterranean Microwave Symposium 2005, (electronic format), Athens - Greece, pp. 40-44, Sep. 2005. 7. Th. N. Kaifas, D.G. Babas, J.N. Sahalos, A Perturbation Technique for the Geometry Synthesis of Planar Arrays Subject to the Directivity Index, PF2-8, 13th Biennial IEEE Conf. on Electromagnetic Field Computation (CEFC 2008), Athens Greece, Μay 11-15, 2008. 8. Planar array optimization by using orthogonal methods, Th. Kaifas, D. Babas and J.N.Sahalos, COST IC0803 RFCSET Workshop, (WG305), 27-29 April 2009. 9. On the Design of Direct Radiating Antenna Arrays with Reduced Number of Controls for Satellite Communications, Th. Kaifas, K. Siakavara, D. Babas, G. Miaris, E. Vafiadis, J.N. Sahalos, 1st International ICST Conference on Mobile Lightweight Wireless Systems – MOBILIGHT 2009, Proceedings CD (ISBN: 978-963-9799-53-0), 18-20 May 2009, also published in Mobile Lightweight Wireless Systems, F. Granelli, C. Skianis, P. Chatzimisios, Y. Xiao, S. Redana (Eds.) (revised selected papers), LNICST 13, ICST Institute for Computer Sciences, Social - Informatics and Telecommunications Engineering, Springer, pp. 420-429, 2009. 10.On the Maximally Sparse Aperiodic Array Design for Space Applications, T.N. Kaifas, D.G. Babas, G.S. Miaris, K. Siakavara, E. Vafiadis, and J.N. Sahalos, European Conference on Antennas and Propagation – EUCAP 2011, 11-15 April 2011, Rome, Italy. 11.The new approach of uncertainty estimation (GUMS1) applied to compliance testing measurements, S. Iakovidis, C. Apostolidis, D. Babas, T. Samaras, 10th International Conference of the European Bioelectromagnetics Association (EBEA 2011), paper 5253, (available in electronic form only), Rome - Italy, 2011. 12. A Combined Deterministic and Stochastic Approach for the Design of Non-Uniform Arrays, T.N. Kaifas, D.G. Babas, and J.N. Sahalos, 7th European Conference on Antennas and Propagation – EUCAP 2013, 8-12 April 2013, Gothenburg – Sweden. 13. Tx/Rx MultiBeam Satellite Antenna Array Design Assesment on a Single Aperture, T.N. Kaifas, D.G. Babas, G. Toso and J.N. Sahalos, 8th European Conference on Antennas and Propagation – EUCAP 2014, 6-11 April 2014, Hague - Netherlands. 14. Full-Wave Embedding - De-embedding Procedures for RFID Measurement Space Characterization, T.N. Kaifas, D.G. Babas, E.E. Vafiadis and J.N. Sahalos, 8th European Conference on Antennas and Propagation – EUCAP 2014, 6-11 April 2014, Hague - Netherlands. 15. A Software Tool for Satellite Advanced Multibeam Aperiodic Array Synthesis, T.N. Kaifas, D.G. Babas, G. Toso and J. N. Sahalos, International Conference on Modern Circuits and Systems Technologies - MOCAST 2016, 12-14 May 2016, DOI: 10.1109/MOCAST.2016.7495137, Thessaloniki – Greece. 16. Design of Overlapping Element Direct Radiating Arrays for Satellite Communications, T.N. Kaifas, D.G. Babas, G. Toso and J. N. Sahalos, International Conference on Modern Circuits and Systems Technologies - MOCAST 2017, 4-6 May 2017, DOI: 10.1109/MOCAST.2017.7937655, Thessaloniki – Greece.
17.
Evolutionary Design of a Dual Band E-shaped Patch Antenna for 5G Mobile
Communications,
S.
Goudos, A. Tsiflikiotis, D. Babas, K. Siakavara, C. Kalialakis and G.
Karagiannidis,
International Conference on Modern Circuits and Systems Technologies -
MOCAST 2017, 4-6 May 2017,
DOI:10.1109/MOCAST.2017.7937640,
Thessaloniki – Greece.
Γ. Ανακοινώσεις σε Διεθνή και Τοπικά Συνέδρια με Κριτές 1. Προσομοίωση Οπτικού Ενισχυτή ντοπαρισμένου με Έρβιο (Er+3) (EDFA) για Τηλεπικοινωνιακές Εφαρμογές, Δ. Μπάμπας, Ι.Ν. Σάχαλος, Στ' Πανελλήνιο Συνέδριο Φυσικής της Ένωσης Ελλήνων Φυσικών, Ξάνθη, 1993. 2. On the Study of Nondistortive Behaviour of Coupled Microstrip Pairs, Th. Kaifas, S. Koukourlis, Th. Samaras, D. Babas and J. Sahalos, Proc. Int. Symp. of BSUAE, Metsovo - Greece, Αpr. 1996. 3. On the Synthesis of Nonuniform Linear Microstrip Arrays: A Circuit Design Approach, D. Babas and J. Sahalos, Proc. 2nd Int. Symp. of BSUAE, p. 106, Xanthi - Greece, June 2000. 4. Design of Radiation Emission Measurements of the Macedonia Airport Air Traffic Surveillance Radar, G. Miaris, T. Kaifas, Z. Zaharis, D. Babas, E. Vafiadis, T. Samaras and J.N. Sahalos, Proc. of the 1st International Conf. "Airports – planning, design and operation", pp. 653-665, Thessaloniki - Greece, June 2003. 5. T.N. Kaifas, D.G. Babas, J.N. Sahalos, Synthesis of directivity constrained large aperiodic planar arrays, COST IC0603 ASSIST Workshop, 9-11 April 2008.
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