Group delay equaliser

Details Group delay equaliser Group delay equaliser

1974-09-11

1976-01-27

Gensler, Paul L.

Wave transmission lines and networks

Coupling networks

Equalizers

333 30M, H03H 714, H03H 930

Patent

active

039355500

ABSTRACT:
A group delay equaliser for a repeater in a waveguide communication system uses a magnetostatic wave delay line as a dispersive element to compensate for inherent dispersion in the waveguide. The delay line uses a thin ferrimagnetic film in which a propagation path is defined which is biased by a uniform adjustable magnetic field which is established to provide an adjustable dispersion characteristic. The film has associated with it means for preventing reflections of magnetostatic waves propagated beyond the ends of the propagation path. A substantially linear propagation delay with frequency is achieved over a bandwidth of 500 MHz. at a centre frequency of 1.5 GHz.

REFERENCES:
patent: 3138789 (1964-06-01), Pugh
patent: 3564461 (1971-02-01), Jernigan
patent: 3713049 (1973-01-01), Desormiere
patent: 3793598 (1974-02-01), Hofelt et al.

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