Four-wire, eight-leg bridge

Details Four-wire, eight-leg bridge Four-wire, eight-leg bridge

1978-03-27

1979-02-20

Claffy, Kathleen H.

Wave transmission lines and networks

Automatically controlled systems

With control of equalizer and/or delay network

333 6, H04B 158, H04M 356

Patent

active

041408756

ABSTRACT:
A 4-wire, 8-leg resistance bridge for interconnecting up to eight stations in a full conference system includes a two line input port and an associated two line output port for each of eight 4-wire telecommunication transmission lines. By providing a certain pattern of straight and rollover (reverse) connections between various pairs of the lines in the bridge, an essentially infinite return loss between the input and output ports of each leg is achieved. In addition, the bridge has a uniform natural loss between each leg's input port and the output ports of the other legs, and provides the proper terminating impedance for each of the interconnected transmission lines.

REFERENCES:
patent: 2182192 (1939-12-01), Becker

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