Magnetic bubble propagation circuits
Singh, Shalendra Kumar
Minnick, Robert C.
Master of Science
The theoretical model proposed by Archer et al for analysis of field access magnetic-bubble propagation circuits is extended to include rotating drive fields. This extension allows the study of magnetic bubble propagation along a T-Bar pattern. Computer simulations are made for a T-Bar pattern, and useful results are obtained concerning circuit parameters affecting bubble propagation at high frequencies, A new field access circuit is designed which has an essentially uniform bubble velocity profile and is therefore expected to provide wide propagation margins at high frequencies. Results of experiments with this circuit are presented and relevant circuit parameters discussed.