Self-tuning resonant cavity filter

Details Self-tuning resonant cavity filter Self-tuning resonant cavity filter

1994-01-18

1998-04-14

Pascal, Robert

Wave transmission lines and networks

Automatically controlled systems

333231, 333232, 455125, H01P 706

Patent

active

057397317

ABSTRACT:
In one form of the invention, a resonant cavity filter (50) is disclosed, comprising an input port (210) for receiving an input signal, a dielectric resonator (204) in a cavity, the dielectric resonator operable to receive an input signal from the input port and further operable to produce an output signal at a resonant frequency of the cavity, an output port (212) operable to receive the output signal and a tuning plate (308) disposed in the cavity, the tuning plate coupled to a control means operable to cause movement of the tuning plate, thereby changing dimensions of the cavity, the control means operable to determine a frequency of the input signal, retrieve an expected tuning plate position from a memory (514) based on the frequency, and move the tuning plate to the expected position. Other systems, devices and methods are disclosed.

REFERENCES:
patent: 3165697 (1965-01-01), Reich et al.
patent: 3715690 (1973-02-01), Young et al.
patent: 3800230 (1974-03-01), Marks et al.
patent: 4157515 (1979-06-01), de Bayser et al.
patent: 4272743 (1981-06-01), Evans
patent: 4343001 (1982-08-01), Anderson et al.
patent: 4700146 (1987-10-01), Barton
patent: 4726071 (1988-02-01), Jachowski
patent: 4958163 (1990-09-01), Leonard

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