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Full-Duplex Coaxial Cable Link

IP.com Disclosure Number: IPCOM000034585D
Original Publication Date: 1989-Mar-01
Included in the Prior Art Database: 2005-Jan-27

Publishing Venue

IBM

Related People

Authors:
Hsu, PYT Stone, HS [+details]

Abstract

A coaxial cable link can be arranged to handle full-duplex communications at megahertz rates, maintain high link impedance, prevent concurrent signal transmission, and provide Clear To Send output signals and interpret Request To Send input signals. A diagram of a full-duplex interface to a coaxial cable is shown in the figure. Coaxial cable 1 is connected at each end with a double- ended transmitter 2,3 and differential receiver 4,5 that are capable of being disconnected from the line when placed in the high impedance (tri-state) condition. The transmitters have a series source termination to dampen line reflections with the source resistor 6 matched to line impedance.