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Tri Conductor Coaxial Cable

IP.com Disclosure Number: IPCOM000091618D
Original Publication Date: 1968-Apr-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 57K

Publishing Venue

IBM

Related People

Abbas, SA: AUTHOR

Abstract

Two signals and a common voltage can be transmitted along a single cable. One signal is transmitted along outer conductor 10. The other signal is transmitted along inner conductor 12. The common voltage is transmitted along central conductor 14. A common characteristic impedance for both conductors 10 and 12 can be obtained. This is effected by making the ratio of the inner radius of conductor 14 to the outer radius of conductor 12 the same as the ratio of the inner radius of conductor 10 to the outer radius of conductor 14 because high-frequency signals tend to flow in corresponding outer and inner surfaces of the conductors. The two signals are effectively independent while the outer signal is still shielded by the bulk of conductor 10.

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Tri Conductor Coaxial Cable

Two signals and a common voltage can be transmitted along a single cable. One signal is transmitted along outer conductor 10. The other signal is transmitted along inner conductor 12. The common voltage is transmitted along central conductor 14. A common characteristic impedance for both conductors 10 and 12 can be obtained. This is effected by making the ratio of the inner radius of conductor 14 to the outer radius of conductor 12 the same as the ratio of the inner radius of conductor 10 to the outer radius of conductor 14 because high-frequency signals tend to flow in corresponding outer and inner surfaces of the conductors. The two signals are effectively independent while the outer signal is still shielded by the bulk of conductor 10.

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