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Tuneable cavity resonator

  • US 6,549,104 B1
  • Filed: 06/08/2001
  • Issued: 04/15/2003
  • Est. Priority Date: 09/09/1998
  • Status: Expired due to Fees
First Claim
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1. A tunable cavity resonator, comprising:

  • 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 adjustable and which influences the resonance frequency (ω

    R) of the cavity resonator; and

    an adjustment device (22, 26) for mechanically changing the position of the tuning plate (28), characterized by a conversion ratio mechanism (18, 20) which couples the adjustment device (22, 26) to the tuning plate (28) in terms of movement and which converts a linear excursion (Δ

    x1) generated by the adjustment device (22, 26), at a predefined ratio (U), into a reduced linear excursion (Δ

    x2) 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 (Δ

    x1) generated by 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.

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