Antenna Designs for Development of Cognitive Radio Systems

This chapter presents an extensive report on the different categories of antenna modules for the development of cognitive radio systems. It also discusses about the other key components of cognitive radio systems like RF filters, low noise amplifiers, analog to digital converters, reconfiguration mechanisms, digital signal processors, digital to analog converters, power amplifiers and band pass filters. Nowadays, RF spectrum is congested with many commercial bands. Hence, spectrum scarcity has been a major challenge to be addressed. The cognitive radio addresses this issue in an efficient manner. This chapter also presents materials used for fabrication and simulation technologies.