Introduction
The research activities within the Department of Microwave Systems and Nanotechnology focus on emerging communications and sensing technologies, with expertise covering a broad spectrum of frequencies from RF, microwave and millimeter wave, to sub-THz. The areas of applications address a number of sectors from telecommunications, automotive, space, defense, to health and biomedical, security and monitoring. The focus of our work includes energy harvesting systems and self-powered sensors, radio frequency identification (RFID) and wireless power transfer (WPT), antennas and antenna arrays, flexible electronics, smart textiles, inkjet printing and 3D printing fabrication, carbon nanotube and graphene electronics and sensors, substrate integrated waveguide technology, micromachining technology, RF-MEMS and solid state based reconfigurable microwave/millimeter-wave circuits, power amplifiers, and new electronic materials including multiferroics, superconductors and acoustic devices.
Scientific Publications & Patents
Journals
F. Mira, J. Mateu, C. Collado, Mechanical Tuning of Substrate Integrated Waveguide Filters, IEEE Transactios on Microwave Theory and Techniques, Vol. 63, No. 12, pp. 3939-3946, October 2015.
J. Kimionis, M. Isakov, B.S. Koh, A. Georgiadis, M. M. Tentzeris, 3D-Printed Origami Packaging With Inkjet-Printed Antennas for RF Harvesting Sensors, IEEE Transactions on Microwave Theory and Techniques, Vol. 63, No. 12, pp. 4521-4532, December 2015.
M. Del Prete, A. Costanzo, A. Georgiadis, A. Collado, D. Masotti, Z. Popovic, A 2.45-GHz Energy-Autonomous Wireless Power Relay Node, IEEE Transactions on Microwave Theory and Techniques, Vol. 63, No. 12, pp. 4511-4520, December 2015.
G. Andia Vera, D. Allane, A. Georgiadis, A. Collado, Y. Duroc, S. Tedjini, Cooperative Integration of Harvesting RF Sections for Passive RFID Communication, IEEE Transactions on Microwave Theory and Techniques, Vol. 63, No. 12, pp. 4556-4566, December 2015.
R. Goncalves, S. Rima, R. Magueta, P. Pinho, A. Collado, A. Georgiadis, J. Hester, N.B. Carvalho, M.M. Tentzeris, RFID-Based Wireless Passive Sensors Utilizing Cork Materials, IEEE Sensors Journal, Vol. 15, No. 12, pp. 7242-7251, December 2015.
E. Fontana, J.Mu-Kim, I. Llamas-Garro, G. Oliveira Cavalcanti, Microfabricated Otto chip device for surface plasmon resonance based optical sensing, Applied Optics, Vol. 54, No. 31, pp. 9200-9204, November 2015.
A. A. San-Blas, A. Vidal, A. A. Muller, P. Soto, F. Mira, B. Gimeno, V. E. Boria, F. Javier Pérez-Soler, Flexible and Efficient Computer-Aided Design Tool for Advanced Comb-Line Rectangular Waveguide Filters, International Journal of RF and Microwave Computer-Aided Engineering, Vol. 25, No. 8, pp. 696-708, October 2015.
A. Georgiadis, A. Collado, K.Niotaki, Boosting the Efficiency: Unconventional Waveform Design for Efficient Wireless Power Transfer, IEICE Transactions on Electronics, Vol. E98-C, No. 7, pp. 608-612, July 2015.
A. Ramos, D. Girbau, A. Lazaro, A. Collado, A. Georgiadis, Solar powered wireless temperature sensor based on UWB RFID with self-calibration, IEEE Sensors Journal, Vol. 15, No. 7, pp. 3764-3772, July 2015.
A. Georgiadis, A. Collado, K.Niotaki, 22.8 GHz Substrate Integrated Waveguide Analog Frequency Divide-by-3 Circuit, IEEE Microwave and Wireless Components Letters, Vol. 25, No. 5, pp. 304-306, May 2015.
S. Kim, Y. Kawahara, A. Georgiadis, A. Collado, M. Tentzeris, Low-Cost Inkjet-Printed Fully Passive RFID Tags for Calibration-free Capacitive/Haptic Sensor Applications , IEEE Sensors Journal, Vol. 15, No. 6, pp. 3135 – 3145, April 2015.
H. Kim, G. Yun, S. Lee, J. Kim, High-resolution CPW fabricated by silver inkjet printing on selectively treated substrate, Sensors and Actuators A: Physical, Vol. 224, pp. 1-5, April 2015.
A. Boaventura, D. Belo, R. Fernandes, A. Collado, A. Georgiadis, N. B. Carvalho, Boosting the Efficiency: Unconventional Waveform Design for Efficient Wireless Power Transfer, IEEE Microwave Magazine, Vol. 16, No. 3, pp. 87-96, April 2015.
M. Virili, A. Georgiadis, A. Collado, K.Niotaki, P. Mezzanotte, L. Roselli, F. Alimenti, N.B. Carvalho, Performance improvement of rectifiers for WPT exploiting thermal energy harvesting, Wireless Power Transfer, Vol. 2, No. 1, pp. 22-31, April 2015.
Conferences
M.Espinosa, I. Llamas-Garro, B. G. M. de Oliveira, M. T. de Melo, J.Mu-Kim, Reconfigurable Frequency Identification Receivers, in Proceedings of IEEE Mediterranean Microwave Symposium, 30-2 December 2015, Lecce (Italy).
J. Blanco, F. Bolos, A. Collado, A. Georgiadis, RF-Energy Harvesting and Wireless Power Transfer Efficiency from Digitally Modulated Signals, in Proceedings of the 15th IEEE Mediterranean Microwave Symposium (MMS 2015), 30-2 December 2015, Lecce (Italy).
F. Mira, I. Llamas-Garro, A. Georgiadis, A. A. San Blas, Substrate Integrated Waveguide hybrid coupler with integrated filter for radar applications, in Proceedings of SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference, 3-6 November 2015, Porto de Galinhas (Brazil).
J. Kim, I. Llamas-Garro, RF MEMS Devices and Applications, in Proceedings of SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference, 3-6 November 2015, Porto de Galinhas (Brazil).
I. Llamas-Garro, J. Bas, J. M. Fabrega, M. Svaluto Moreolo, B. Carrion Schafer, R. Torres-Torres, M. R. T. de Oliveira, M. T. de Melo, J. Kim, D. Vukobratovic, Recent Trends and Considerations for High Speed Data in Chips and System Interconnects, in Proceedings of SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference, 3-6 November 2015, Porto de Galinhas (Brazil).
Y. Lee, S. Sim, E. Fontana, I. Llamas-Garro, G. Olivera Cavalcanti, J.Mu-Kim, SPR chip fabrication using silicon-on-quartz bonding, in Proceedings of 41st International Micro and Nano Engineering Conference (MNE 2015), 21-24 September 2015, The Hague (Netherlands).
C. Kalialakis, D.Anagnostou, M.T. Chryssomallis, Mutual Coupling Effects on the MIMO Capacity Using Dual Band Wi-Fi Double-T Printed Antennas, in Proceedings of 2015 IEEE AP-S Symposium on Antennas and Propagation and URSI CNC/USNC Joint Meeting ,19-24 July 2015, Vancouver (Canada).
G. A. Ioannopoulos, A. G. Koutinos, P. K. Gkonis, C. Kalialakis, D.Anagnostou, M.T. Chryssomallis, G. A. Kyriakou, Polarization Diversity Performance of Mobile Terminals in Multipath Environment Using MIMO Channel characterization, in Proceedings the 2015 IEEE AP-S Symposium on Antennas and Propagation and URSI CNC/USNC Joint Meeting, 19-25 July 2015, Vancouver (Canada).
S. Sim, Y. Su Lee, Y. Jang, Y. Lee, Y. Kim, I. Llamas-Garro, J.Mu-Kim, Fabrication of a Single-Pole Double-Throw silicon RF MEMS ohmic contact Switch operating from 50 to 70 GHz, in Proocidings of 16th International Symposium on RF-MEMS and RF-MICROSYSTEMS, 29-1 June 2015, Barcelona, Spain.
S. Streit, C. Kalialakis, A POX OpenFlow Loop Solution for Mininet Network Emulations, in Proceedings of International Conference on Modern Circuits and Systems Technologies(MOCAST), 14-15 May, Thessaloniki, May 2015.
E.Logaras, V.Voutsas, C.Kaitatzis, S.K.Goudos, C. Kalialakis, SNMP Performance Measurements Using Open Source Software, in Proceedings of International Conference on Modern Circuits and Systems Technologies(MOCAST), 14-15 May, Thessaloniki, May 2015.
F. Mira, A. Georgiadis, M. Bozzi, Substrate integrated waveguide 180-deg directional coupler with integrated filter, in Proceedings of 8th Global Symposium on Millimeter-Waves (GSMM 2015), 25-27 May 2015, Montreal (Canada).
G. Andia Vera, A. Georgiadis, Y. Duroc, S. Tedjini, Cooperative integration of harvesting sections for passive RFID communication, in Proceedings of the IEEE International Microwave Symposium (IMS2015),17-22 May 2015, Phoenix (USA).
J. Kimionis, A. Georgiadis, M. Isakov, H.-J. Qi, M. M. Tentzeris, 3D/Inkjet-printed origami antennas for multi-direction RF harvesting, in Proceedings of the IEEE International Microwave Symposium (IMS2015), 17-22 May 2015, Phoenix (USA).
M. Del Prete, A. Costanzo, A. Georgiadis, A. Collado, D. Masotti, Z. Popovic, Energy autonomous bi-directional wireless power transmission (WPT) and energy harvesting circuit, in Proceedings of the IEEE International Microwave Symposium (IMS2015), 17-22 May 2015, Phoenix (USA).
S. Kim, J. Bito, S. Jeong, A. Georgiadis, M.M. Tentzeris, A flexible hybrid printed RF energy harvester utilizing catalyst-based copper printing technologies for far-field RF energy harvesting applications, in Proceedings of the IEEE International Microwave Symposium (IMS2015), 17-22 May 2015, Phoenix (USA).
E. Sylvestre, A. Collado, A. Georgiadis, Nonlinear optimization of magnetic resonant wireless power transfer systems, in Proceedings of URSI Atlantic Radio Science Conference (URSI AT-RASC), 18-25 May 2015 Gran Canaria (Spain).
M. Schuetz, A. Georgiadis, A. Collado, G. Fischer, A particle swarm optimizer for tuning a software-defined, highly reconfigurable wireless power transfer platform, in Proceedings of IEEE Wireless Power Transfer Conference 2015 (WPTC), May 13-15 May 2015, Boulder, Colorado (USA).
R. Martinez, J. Kimionis, A. Georgiadis, A. Collado, M. M. Tentzeris, G. Goussetis, J.L. Gomez Tornero, Circularly Polarized Shorted Ring Slot Rectenna with a Mesh Design for Optimized Inkjet Printing on Paper Substrate, in Proceedings of the 9th European Conference on Antennas and Propagation (EuCAP 2015), April 12-17, 2015, Lisbon (Portugal).
A. Carvalho, R. Gonçalves, N. B. Carvalho, P. Tavares, A. Georgiadis, A. Costanzo, 5.8 GHz Microstrip Antennas and Array for Microwave Power Transfer, in Proceedings of the 9th European Conference on Antennas and Propagation (EuCAP 2015), 12-17 April, 2015, Lisbon (Portugal).
A. Georgiadis, S. Kim, A. Collado, M.M. Tentzeris, Inkjet-printed meta-material inspired passive antenna sensor for UHF RFID systems, in Proceedings of International Workshop on Antenna Technology (IEEE iWAT 2015), 4-6 March 2015, Seoul (Republic of Korea).
M. Virili, A. Georgiadis, A. Collado, P. Mezzanotte, L. Roselli, Design of a patch antenna with thermo-electric generator and solar cell for hybrid energy harvesting, in Proceedings of IEEE Radio and Wireless Symposium (RWS), 25-28 January 2015, San Diego (USA).
M. Kufa, Z. Raida, J. Mateu, Novel formulation of coefficients of low-pass prototype filter for the design of four-element planar filtering antenna array , in Proceedings of Topical Conference on Antennas and Propagation in Wireless Communications (IEEE APWC 2015), 7-11 September 2015, Torino (Italy).
I. Llamas-Garro, Y. Lee, S. Sim, J.Mu-Kim, G. Oliveira Cavalcanti, E. Fontana, Chip con Resonancia Plasmónica de Superficie con Aplicación en Sensores Ópticos, in Proceedings of XXX Simposium Nacional de la Unión Científica Internacional de Radio, 2-4 September 2015, Pamplona (Spain).
Patents
A. Georgiadis, A. Collado, Reflectarray Antenna System , International Application Nº: PCT/EP2009/061316. Granted patent: USA 9,048,544; ES2384836.