The communication industry is faced with a challenge concerning future wireless communication systems. Since the demand on frequency spectrum resources is increasing, wireless communication systems have to deal with coexistence and interference problems. Ever-evolving communication standards and the need for multi-standard communication devices to keep pace with these developments make digitally tunable RF filters essential.
The tunable RF filters developed by Fraunhofer IIS enhance the capabilities of transceiver units in terms of frequency selectivity, flexibility, and agility. The modules reliably select the required frequency spectrum while rejecting out-of-band signals. They are digitally tunable and can be reconfigured even during operation, which decreases latency and allows for dynamic spectrum access. Digitally tunable filter modules can be used to replace filter banks in RF front ends.
We develop tunable filters for a wide range of applications in the fields of mobile communication, public safety, the Internet of Things (IoT) and satellite communication. Typically RF filters are in use for multiband and broadband receivers and transmitters, multi-standard transceivers, software defined radio (SDR), cognitive radio and frequency monitoring.