Telecommunication system with controlled gain active filters

Details Telecommunication system with controlled gain active filters Telecommunication system with controlled gain active filters

1976-05-12

1977-11-08

Claffy, Kathleen H.

179 16F, H04B 336

Patent

active

040576957

ABSTRACT:
A telecommunication system includes a plurality of information transmission lines of various length, through which information signals are transmitted, active filters coupled to the information transmission lines, and a switching network coupled with the lines through the active filters, for establishing various connections between the lines in response to subscriber connection requirements. The active filters are of the type whose gain can be controlled and the gain is controlled in response to the length of the line over which the signals are transmitted, whereby the transmission loss of the line is compensated.

REFERENCES:
patent: 3251946 (1966-05-01), Pfleiderer et al.
patent: 3689704 (1972-09-01), Wadding
patent: 3781481 (1973-12-01), Shaffer et al.
patent: 3806658 (1974-04-01), Anderson et al.
patent: 3816668 (1974-06-01), Giesken
patent: 3829626 (1974-08-01), Irwin et al.
patent: 4007340 (1977-02-01), Russell

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