Wave transmission lines and networks – Automatically controlled systems – With control of equalizer and/or delay network
Patent
1974-12-23
1976-09-07
Gensler, Paul L.
Wave transmission lines and networks
Automatically controlled systems
With control of equalizer and/or delay network
333 84M, H01P 518
Patent
active
039796990
ABSTRACT:
A directional coupler arrangement is provided in which a plurality of directional couplers are cascaded by connecting the thru terminal of each coupler to the input terminal of the succeeding coupler and connecting the output terminal of each coupler except the last to the forward terminal of the succeeding coupler so that the desired backward coupled signal of each of the couplers arrive simultaneously at the output terminal of the last coupler so as to be additive and thereby produce an enhanced backward coupled signal. The forward coupled signals arrive at the forward terminal of the first coupler either out of coincidence or in a subtractive mode thereby minimizing the forward coupled signal.
REFERENCES:
patent: 3146413 (1964-08-01), Butler
patent: 3278864 (1966-10-01), Butler
patent: 3863024 (1975-01-01), Caragliano et al.
Caragliano Edward S.
Nick Howard H.
Gensler Paul L.
International Business Machines - Corporation
Sweeney, Jr. Harold H.
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