Today's wireless communications and information systems are heavily based on microwave techlogy. Current trends indicate that in the future along with - crowaves, the millimeter wave and Terahertz techlogies will be used to meet the growing bandwidth and overall performance requirements. Moreover, motivated by the needs of the society, new industry sectors are gaining ground; such as wi- less sensor networks, safety and security systems, automotive, medical, envir- mental/food monitoring, radio tags etc. Furthermore, the progress and the pr- lems in the modern society indicate that in the future these systems have to be more user/consumer friendly, i. e. adaptable, reconfigurable and cost effective. The mobile phone is a typical example which today is much more than just a phone; it includes a range of new functionalities such as Internet, GPS, TV, etc. To handle, in a cost effective way, all available and new future standards, the growing n- ber of the channels and bandwidth both the mobile handsets and the associated systems have to be agile (adaptable/reconfigurable). The complex societal needs have initiated considerable activities in the field of cognitive and software defined radios and triggered extensive research in adequate components and techlogy platforms. To meet the stringent requirements of these systems, especially in ag- ity and cost, new components with enhanced performances and new functionalities are needed. In this sense the components based on ferroelectrics have greater - tential and already are gaining ground.
Spartak Gevorgian obtained his DrSci in Electrical and Electronics Engineering from the Electrotechnical University, St. Petersburg, Russia. He works as a profesor for the Chalmers University of Technology and also part-time for Ericsson AB, Molndal, Sweden. As well as having been a professor for his former university in St. Petersburg, Spartak Gevorgian has also worked at the Polytechnic Institute, Yerevan, Armenia. He has been the co-ordinator of several EU projects, including NANOSTAR and MELODY.