Method for tuning a radio filter, a radio filter and a...

Details Method for tuning a radio filter, a radio filter and a... Method for tuning a radio filter, a radio filter and a...

2006-01-17

2006-01-17

Ham, Seungsook (Department: 2817)

Wave transmission lines and networks

Automatically controlled systems

C455S125000

Reexamination Certificate

active

06987427

ABSTRACT:
The present invention relates to a method for tuning a radio filter. The filter comprises an input connection, an output connection and at least two resonator modules coupled in cascade, each having a running mechanism and a probe. A first resonator module is connected to the input connection and a final resonator module is connected to the output connection. The filter is adapted to receive at least one signal within a frequency range. The method comprises essentially two steps: coarse tuning, which is dependent on the frequency content of the received signal(s), and fine tuning, which is dependent on a calculated deviation between a set value vector and a measured signal parameter vector. A relationship between the set value vector and the signal parameter vector is established for calculating the deviation. The invention also relates to a radio filter and a system comprising such a radio filter.

REFERENCES:
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patent: 5065121 (1991-11-01), Ghadaksaz
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patent: 6041083 (2000-03-01), Larsson et al.
patent: 6147577 (2000-11-01), Cavey
patent: 1253306 (1971-11-01), None
patent: WO00/64052 (2000-10-01), None
Atia et al, Microwave Symposium Digest 2000 IEEE, pp. 1637-1640 vol. 3, Tuning and measurements of couplings and resonant frequences for Cascaded Resonators 2000.

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