TUNABLE FILTER CAPABLE OF CONTROLLING TUNING CHARACTERISTICS

摘要

Disclosed is a tunable filter capable of controlling tuning characteristics.  In one embodiment, a filter comprises: a housing with a plurality of cavities defined by partition walls; resonators received by the cavities; at least one sliding member mounted on an upper portion of the resonator; a main cover coupled to an upper portion of the housing; and at least one tuning element coupled to a lower portion of the sliding member, the tuning element being made of a metallic material, wherein the tuning element is joined with the sliding member by a rotatable bolt, and the bolt is coupled with the tuning element at a position led towards one side from the center of the tuning element by a predetermined distance.  With the disclosed filter, tuning characteristics can be controlled by the rotation of the tuning element, as a result of which the filter can be used adaptively in various environments.