H - Electricity – 03 – H
Patent
H - Electricity
03
H
H03H 7/09 (2006.01) H01P 1/213 (2006.01) H03H 7/46 (2006.01)
Patent
CA 2058186
DESCRIPTION OF AN INDUSTRIAL INVENTION APPLICATION having the title: "SYSTEM FOR FILTERING SIGNALS OF HIGH AND LOW FREQUENCY BANDS, AND RELEVANT IMPLEMENTATION DEVICE" Applicant: FOR.E.M. S.P.A. Head offices: Via Archimede 22/24 - AGRATE BRIANZA (MI) - (ITALY) Inventors: Enzo Cavalieri D'Oro, Mario Bandera Filing date: 28.12.90 Filing No.22558 A/90 SUMMARY OF THE INVENTION A filtering system for separating two signals included in dif- ferent frequency bands, in which the composite signal S1+S2 to be separated is input into an inductive element (LH) belonging to the high frequency filter section, in which element therefore the high frequency signal S1 and also the low frequency signal pass; said signal S1 is immediately coupled by means of mutual induction with a resonant element of said first filter section, said resonant element being made-up so that the low frequency signal S2 cannot be coupled with itself becouse of the low value of its frequency; then said sole signal S2 is transmitted towards the low pass filter section acting as rejection section of the high frequency band, which therefore has been introduced into the resonator and separated without passing or interesting the low frequency filter section and without suffering the deterioration caused by its passage into said low frequency filter section.
Bandera Mario
D'oro Enzo C.
Bandera Mario
D'oro Enzo C.
Forem S.p.a.
Mitches & Co.
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