Antonis Alexandridis

Αντώνης Αλεξανδρίδης

  Antonis Alexandridis is a Research Director at the IIT* in the NCSR** Demokritos in Athens, Greece.

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Book chapters




Dr. Antonis Alexandridis was Scientific Responsible person for the Institute of Informatics and Telecommunications in the following research projects:


"Antenna Centre of Excellence", 2006-2007, (FP6/IST/NoE, Network of Excellence)

The objectives for ACE-2 are to extend and complete the structuring effort started in 2004-2005 (in ACE-1) by tackling the fragmented European antenna R&D, reducing duplications and boosting excellence and competitiveness in key areas. Sophisticated antennas are a strategic multi-application technology for emerging communications, navigation and sensing services for the Information Society, Aeronautics & Space, Transport, Security, Demining and Tele-Medicine.
Involving thousand of specialists, European antenna engineering is scattered with more than 200 entities, and some 200 MEuros of antenna R&D yearly. In this frame, 45 top-level Institutions led the ACE 2004-2005 NoE (ACE-1). These same Institutions, with a few additions, constitute the Consortium for this ACE 2006-2007 proposal (ACE-2).
In the framework of this project IIT is mainly involved in the following research areas: methodologies for antenna characterization measurements, MIMO channel capacity for realistic antenna arrays, study of the user's body influence on the performance of a MIMO system, MIMO network optimization, cross layer studies and system layer performance evaluation.


"Antenna Centre of Excellence", 2004 – 2005, (FP6/IST/NoE, Network of Excellence)

The main objective of this project was to structure the fragmented European antenna R&D, reduce duplications and boost excellence and competitiveness in key areas. ACE deals with the antenna function of radio systems. This includes the electromagnetic interface from conductors to free space radiated waves, the beam-forming functions, whether they are analogue or digital, and adaptive "smart" systems to optimize performance. The initial core participants of this NoE are 40 leading European institutions in antenna technology starting the R&D integration. Other excellent entities are providing their contributions under NoE funding. All benefit from the NoE facilities and events. The network has been structured to achieve vertical and horizontal integration of R&D activities. In the framework of this project IIT is mainly involved in the research areas of smart antenna technology and methodologies for antenna characterization measurements.


"Forum of laboratories implementing EU Electromagnetic Compatibility Directive", 2003 – 2005,  (GROWTH/Thematic Networks, FP5)

The main objective of the project is to establish a network (forum) in European scale of EMC laboratories implementing or intending to implement the EMC Directive (89/336/EEC). This network of EMC laboratories aims to enhance collaboration between European units in order to prepare laboratories in the Candidate States for the process of implementation of the EMC Directive. With this general goal in mind, the network pursues the following objectives: Promotion of the EMC Directive; Propagation of European practice and requirements; Promotion of application of harmonized standards and clarification of related ambiguities; Elimination of problems in the implementation of ISO/IEC 17025; Raising awareness of the role of EMC laboratories and competent bodies; Progress in qualifications of the operating personnel; Promoting the use of full-compliance equipment and appropriate test set-ups; Collection of generic knowledge related to the implementation of New Approach Directives. A study has been conducted aiming to gather information about the EMC activities, resources and capabilities of EMC testing Laboratories in Greece. The derived data are used to update the Database on EMC European Laboratory Resources that has been developed in the frame of the project.

"Study of interaction between the antenna of mobile handsets and the human body", 2002 – 2003 (GSRT, Greek Ministry for Development, bilateral R&T Co-operation Program) (Project Coordinator)
The interaction between the antenna of the mobile terminal and the body of the user holding it constitutes the main research objective of this project. More specifically, in the framework of the project, the mechanism and the parameters of this interaction are studied in detail. The aim is the evaluation of the handheld antenna performance degradation and on the other hand the determination of the amount of the RF power absorbed in the human body. The derived results can be used in the optimization of the design and development of new more efficient handheld antennas and on the other hand, respectively, these results can be used to evaluate potential health effects or compliance with appropriate standards. A theoretical EM model has been developed, evaluated and optimized with measurements data that will derived through a measurement procedure using prototype measuring setup especially developed for this purpose. The measurement methodology is based on far field EM radiation measurements conducted in the anechoic chamber of the Institute using prototype models of mobile phones and phantom-heads, simulating the electromagnetic behavior of the human head in the vicinity of a radiating handset.

Dr. Antonis Alexandridis was Technical Manager in the following research project:

"Novel Metamaterials for Patch Antennas Applications", 2008 –2009   (funded by European Space Agency - ESA)

*Institute of Informatics and Telecommunications  **National Center for Scientific Research "Demokritos"