Tunable filter comprising a microstrip patch having symmetrical slots, asymmetrical feed lines and a plurality of diodes

摘要

The present disclosure introduces wide tunable band filters. In one embodiment, a wide tunable band filter apparatus is described. The filter apparatus may include a microstrip patch having a plurality of symmetrical slots etched into the microstrip patch. A plurality of diodes may be coupled to the microstrip patch. Furthermore, two asymmetrical feed lines may be connected to the microstrip patch. Other embodiments are also described.