Accession Number : ADD005550

Title :   Acoustic Surface Wave Bubble Switch.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON D C

Personal Author(s) : Hubbell,Wayne C ; Chang,Christopher T

Report Date : 25 Jul 1978

Pagination or Media Count : 6

Abstract : This patent describes an acoustic surface wave bubble switch in which a magnetic bubble domain traveling in a thin film magnetic platelet can be guided in alternate directions by application of an acoustic wave. An array of longitudinal magnetic elements in the form of single bars and bars combined to form a T configuration together with a rotating in-plane magnetic field causes the magnetic bubble to propagate across the magnetic platelet. One of the configurations of the magnetic element is a T with a second horizontal bar and the bubble will have equal attraction for either of the horizontal bars. At the proper time an acoustic wave can direct the bubble to propagate in the direction of a chosen horizontal bar thereby effecting a switching action.

Descriptors :   *Patents, *Electronic switches, *Magnetic domains, Surface waves, Acoustic waves, Thin films, Configurations, Electronic switching

Subject Categories : Line, Surface and Bulk Acoustic Wave Devices
      Acoustics
      Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE