Wave transmission lines and networks – Plural channel systems
Patent
1993-01-08
1994-06-14
Gensler, Paul
Wave transmission lines and networks
Plural channel systems
333 12, 333 22R, 174 34, 379416, H03H 700
Patent
active
053213726
ABSTRACT:
In a computer network having a cable for transmission of electrical signals between data terminal equipment and a device used to control and route data in the network, an apparatus for terminating the cable to minimize emissions radiating from the cable and susceptibility of the cable to outside interferences. The cable is comprised of unshielded twisted pairs of wires. Each twisted pair is individually terminated into a matching input impedance. The difference signals being conducted in each twisted pair produces common mode currents which sets up standing waves through the cable. Consequently, at each end of the cable, the common mode of the twisted pairs is terminated into a load having an impedance approximately equal to the common mode impedance of the twisted pairs. These loads effectively dissipate the energy from the standing waves, thereby minimizing emissions. Reciprocally, susceptibility is likewise minimized.
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Gensler Paul
SynOptics Communications, Inc.
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