Wave transmission lines and networks – Automatically controlled systems – Impedance matching
Patent
1979-04-04
1981-03-17
Gensler, Paul L.
Wave transmission lines and networks
Automatically controlled systems
Impedance matching
328167, H03H 1702
Patent
active
042570182
ABSTRACT:
Automatic tuning circuit for voltage controlled filters, by digital phase control, including an oscillator and a path to be filtered associated with the voltage controlled filter, wherein the voltage controlled filter must be adjusted on a frequency equal or shifted by a preset amount with respect to the oscillator frequency, including means to scan the filter response while it is fed by the signal of the oscillator, means to detect the shift (positive or negative) of the filter response with respect to the oscillator frequency, means to measure in a digital way such a shift and arranged to provide a signal to correct the filter response, and means for digital storage of that correction signal.
REFERENCES:
patent: 3639852 (1972-02-01), Boyer
patent: 3667052 (1972-05-01), Effenberger
patent: 3978416 (1976-08-01), Sutphin, Jr.
patent: 3997773 (1976-12-01), Van Essen et al.
Masdea Arturo
Quagliarello Giuseppe
Gensler Paul L.
Selenia - Industrie Elettroniche Associate - S.p.A.
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