Broadband switched parasitic arrays for portable DVB-T receiver applications in the VHF/UHF bands

摘要

The fixed active switched Parasitic array (FASPA) has been recently proposed as an attractive alternative solution to fully adaptive arrays -mainly due to cost considerations -regarding interferer cancellation and multipath-fading mitigation. in such an array, the signal source is permanently connected to a fixed element, while the state of the surrounding parasitic elements, controlled by p-i-n diodes, is either short-circuited or open-circuited. The radiation pattern is steered by employing all possible combinations of open-circuited and short-circuited elements [1].