Tuneable cavity resonator

Abstract

The invention concerns a tunable cavity resonator that comprises a resonator body (2, 3, 4) defining a cavity (5), a tuning plate (28) whose position with respect to the resonator body (2, 3, 4) is modifiable and which influences the resonance frequency (ωR) of the cavity resonator, and an adjustment device (22, 26) for mechanically changing the position of the tuning plate (28), which is characterized in that a conversion ratio mechanism (18, 20) couples the adjustment device (22, 26) to the tuning plate (28) in terms of movement and converts a linear excursion (Δx1) generated by the adjustment device (22, 26), at a predefined ratio (U), into a reduced linear excursion (Δx2) that acts on the tuning plate (28), the conversion ratio mechanism (18, 20) comprising a first spring element (20) whose end toward the adjustment device is deflectable with the linear excursion (Δx1) generated by the adjustment device (22, 26), and a second spring element (18) which impinges with an opposing force on the end of the first spring element (20) remote from the adjustment device.

Dependencies are inferred from the claim text.