Abstract: A bracket is provided. The bracket includes a fixing seat and a holding seat. The fixing seat has a first extending direction and includes at least one first contacting end surface, and a first angle is contained between the at least one first contacting end surface and the first extending direction. The holding seat is detachably connected to the fixing seat with a bend angle to form a bend structure, and the holding seat includes at least one second contacting end surface corresponding to the at least one first contacting end surface. The at least one first contacting end surface and the at least one second contacting end surface are located near or at a bend portion of the bend structure.

Abstract: A tunable filter for dynamically setting a filter center frequency includes a movable member, an upper casing, a lower casing, conductive gaskets, a cavity and a driving unit. The movable member includes a board and lugs. The upper casing includes upper openings corresponsive to the lugs respectively. The lower casing includes lower openings corresponsive to the upper openings respectively. The conductive gaskets are disposed between the upper and lower casings. The cavity is combined with the lower casing and has chambers, and the conductive gaskets are corresponsive to the upper and lower openings respectively. The driving unit is coupled to the movable member for moving the lugs in a first direction towards the chambers or in a second direction away from the chambers. The distance moved by the lugs in the first direction or the second direction is used for determining the filter center frequency.

Abstract: A tunable filter for dynamically setting a filter center frequency includes a movable member, an upper casing, a lower casing, conductive gaskets, a cavity and a driving unit. The movable member includes a board and lugs. The upper casing includes upper openings corresponsive to the lugs respectively. The lower casing includes lower openings corresponsive to the upper openings respectively. The conductive gaskets are disposed between the upper and lower casings. The cavity is combined with the lower casing and has chambers, and the conductive gaskets are corresponsive to the upper and lower openings respectively. The driving unit is coupled to the movable member for moving the lugs in a first direction towards the chambers or in a second direction away from the chambers. The distance moved by the lugs in the first direction or the second direction is used for determining the filter center frequency.