Switchable filter

A switchable filter comprising:

• a filter unit provided with a first filter group configured to filter a frequency of a first frequency band on one surface thereof and a second filter group configured to filter a frequency of a second frequency band on the other surface thereof based on a center partition wall;
• and
• a frequency band switching unit configured to switch the frequency band to any one of the first frequency band and the second frequency band by moving to be adjacent to or spaced apart from any one of the one surface and the other surface of the filter unit,
• wherein the filter unit includes a filter body provided as a cavity filter including a plurality of cavities through which the first filter group and the second filter group are open in directions of the one surface and the other surface, respectively, and a plurality of resonance bar tuning screws disposed in the plurality of cavities, respectively;
• and
• wherein the frequency band switching unit includes:
• a first filter side short unit configured to come in contact with the resonance bar tuning screw of the first filter group while moving to be adjacent to the one surface of the filter body, and to be spaced apart from the resonance bar tuning screw while moving to be spaced apart from the one surface of the filter body;
• and
• a second filter side short unit configured to come in contact with the resonance bar tuning screw of the second filter group while moving to be adjacent to the other surface of the filter body, and to be spaced apart from the resonance bar tuning screw while moving to be spaced apart from the other surface of the filter body.