| 摘要 |
The invention relates to a dielectric resonator comprising a cylindrical dielectric resonator body (35) comprising a concentric cylindrical recess. A resonance frequency controller comprises an adjustment mechanism (31) and a cylindrical dielectric adjustment body (32), which is movable by means of the adjustment mechanism in the axial direction inside the recess (43) of the resonator body for adjusting the resonance frequency. The frequency controller of the invention further comprises a dielectric fine adjustment body (33) attached to the adjustment mechanism (31) and arranged inside the adjustment body (32) so that the projection of the fine adjustment body (33) at the end of the adjustment body (32) within the recess (43) in the resonator body may be adjusted by a movement of the adjustment mechanism. Thus, the frequency controller has two slopes of adjustment, whereby the adjustment is fast owing to the movement of both adjustment bodies (32, 33) and also extremely accurate owing to the fine adjustment function, which is achieved when the smaller adjustment body (33) is moved alone.
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