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Crosspoint Switch Using Impedance Switched Transmissions Line Segments

IP.com Disclosure Number: IPCOM000091219D
Original Publication Date: 1969-Nov-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 36K

Publishing Venue

IBM

Related People

Anderson, PN: AUTHOR [+2]

Abstract

This device can be used as a crosspoint switch. Conductive strip 10 is joined to conductive strip 12 through dielectric layer 14 by conductive junction strip 16 and plated through-hole 18. Positioned under region A of strip 10, region B of strip 12 and region C of junction strip 18 are plugs 20 of oriented, anisotropic NiFe magnetic material. The magnetic orientation of plugs 20 under region C is at right angles to that of plugs 20 under regions A and B. When a magnetic field of variable magnitude and in the direction indicated by the arrow is applied, it effects the impedance of regions A, B, and C. When H=0, the impedance of regions A and B equals ZO and the impedance of region C equals 100 Z0. When H=H , then the impedance of region C equals Z0 and the impedances of regions A and B equal 100 Z0.

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Crosspoint Switch Using Impedance Switched Transmissions Line Segments

This device can be used as a crosspoint switch. Conductive strip 10 is joined to conductive strip 12 through dielectric layer 14 by conductive junction strip 16 and plated through-hole 18. Positioned under region A of strip 10, region B of strip 12 and region C of junction strip 18 are plugs 20 of oriented, anisotropic NiFe magnetic material. The magnetic orientation of plugs 20 under region C is at right angles to that of plugs 20 under regions A and B. When a magnetic field of variable magnitude and in the direction indicated by the arrow is applied, it effects the impedance of regions A, B, and C. When H=0, the impedance of regions A and B equals ZO and the impedance of region C equals 100 Z0. When H=H , then the impedance of region C equals Z0 and the impedances of regions A and B equal 100 Z0. Therefore by varying the magnetic field, strip 10 can be selectively connected to and disconnected from strip 12, permitting these junctions to be arranged in matrices and used as crosspoint switches.

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