Magnetostatic wave delay line

Details Magnetostatic wave delay line Magnetostatic wave delay line

1983-10-17

1985-11-19

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Delay lines including elastic bulk wave propagation means

310 26, 333145, 333147, 333148, H03H 930

Patent

active

045545197

ABSTRACT:
A magnetostatic wave device operating within a biasing magnetic field for delaying microwave signals is described including a layer of YIG material having a predetermined thickness, first and second transducers spaced apart for generating and receiving magnetostatic waves in the YIG material and a ground plane having a plurality of spacings from said YIG material, each spacing having a predetermined length along the propagation path between the first and second transducers. The invention further includes first and second layers of YIG material, first and second transducers spaced apart for generating magnetostatic waves in said first material and said first material having a plurality of spacings from said second material, each spacing having a predetermined length along the propagation path from said first to said second transducer. The invention overcomes the problem of undesired phase or group delay variations from a desired linear or quadratic phase variation as a function of frequency.

REFERENCES:
patent: 3864647 (1975-02-01), Bongianni
patent: 3935550 (1976-01-01), Adam et al.
patent: 4028639 (1977-06-01), Hagon et al.
patent: 4314214 (1982-02-01), Castera et al.
patent: 4400669 (1983-08-01), Daniel et al.

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