Wave transmission lines and networks – Coupling networks – Balanced to unbalanced circuits
Patent
1993-06-28
1994-11-08
Powell, Mark P.
Wave transmission lines and networks
Coupling networks
Balanced to unbalanced circuits
333 32, H03H 500, H03H 738
Patent
active
053630688
ABSTRACT:
Disclosed is a series tuned resonant autotransformer which passes baseband video signals so that more than one non-synchronized channel can be sent over unshielded twisted pair wires sharing a common cable sheath. The transformer includes a trifilar winding configuration with a capacitor, resistor and ground connection coupled between the two secondary windings. The transformer is able to pass a DC signal as well as a balanced output signal over most of the video bandwidth.
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U.S. Patent Application of Georger and Rutkowski, Ser. No. 07/943,664, filed Sep. 11, 1992.
U.S. Patent Application of Georger, Ser. No. 08/037,944, filed Mar. 26, 1993.
AT&T Bell Laboratories
Birnbaum Lester H.
Cohen Cheryl
Powell Mark P.
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