Browse Prior Art Database

Sawtooth Propagation Element

IP.com Disclosure Number: IPCOM000081042D
Original Publication Date: 1974-Mar-01
Included in the Prior Art Database: 2005-Feb-27
Document File: 2 page(s) / 25K

Publishing Venue

IBM

Related People

Hendel, RJ: AUTHOR

Abstract

A gapless propagation structure for moving magnetic bubble domains is provided for a cell size of no less than 4W/2/ (where W is equal to the minimum line width capability), reducing the electronics necessary to drive propagation elements.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 2

Sawtooth Propagation Element

A gapless propagation structure for moving magnetic bubble domains is provided for a cell size of no less than 4W/2/ (where W is equal to the minimum line width capability), reducing the electronics necessary to drive propagation elements.

A gapless structure is illustrated which requires a three-phase clock pulse system, two of which are 90 degrees out-of-phase and a third which is the negative sum of the first two.

Referring to the illustrated gapless structure, the bubbles would move to position 1 in the top portion of the loop upon application of a 1 pulse. Bubbles in the bottom part of the loop would move to position 2 upon application of the appropriate pulse, also referenced as 2. When the third pulse 3 is applied, all bubbles would shift downward to position 3. The electronic pulsers necessary for this function would number two, if they are capable of both positive and negative pulses, or three, if only capable of either positive or negative pulses. These pulses could be controlled and generated by conventional logic elements and would consume much less power than presently used systems.

1

Page 2 of 2

2

[This page contains 1 picture or other non-text object]