Dielectric resonator having adjustment plates movable with respect to resonator disc and each other

A dielectric resonator, comprising

• a dielectric resonator disc,
• an electrically conductive casing,
• a plurality of dielectric adjustment plates which are installed concentrically and parallel with each other and said resonator disc,
• an adjustment mechanism connected to the one of said adjustment plates which is the most remote one above the resonator disc, for moving said dielectric adjustment plates in a direction perpendicular to the resonator, for adjusting the resonance frequency of the dielectric resonator,
• a spring mechanism for suspending each of the following ones of said dielectric adjustment plates from the respective previous one of said dielectric adjustment plates, said spring mechanism being arranged to keep said dielectric adjustment plates apart from each other in a free suspension, and the adjustment mechanism being arranged to act against the spring mechanism for gradually stacking the dielectric adjustment plates on said resonator disc during an adjusting movement towards said resonator disc.

A dielectric resonator comprising

• a dielectric resonator disc,
• an electrically conductive casing,
• a plurality of dielectric adjustment plates, which are installed substantially concentrically and parallel one after another and substantially parallel with the resonator disc,
• an adjustment mechanism for moving said dielectric adjustment plates in a direction perpendicular to the resonator disc, for adjusting the resonance frequency, the mechanical engagement of said plates with each other and with the adjustment mechanism enabling movement of the adjustment plates both with respect to the resonator disc and with respect to each other, so that the adjustment plates are arranged in layers on top of each other as the adjusting movement is proceeding,
• spring means,
• said mechanical engagement comprising that the adjustment mechanism is connected to the adjustment plate most remote above the resonator disc, and that each following one of the adjustment plates being suspended from the bottom surface of the respective previous one of said adjustment plates by said spring means, which in free suspension keeps the adjustment plates apart from each other.