High performance ferromagnetic filters applicable from the VHF t

Details High performance ferromagnetic filters applicable from the VHF t High performance ferromagnetic filters applicable from the VHF t

1978-12-05

1980-08-05

LaRoche, Eugene R.

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333205, 333209, H03H 710

Patent

active

042164478

ABSTRACT:
Compact, simple, ferromagnetic-filter coupling structures which provide a very high, effective-quality factor Q in the VHF, UHF, and microwave frequency ranges achieved by means of offsetting the ferromagnetic element from the plane of the coupling loops and by phase shifting the current in one of the coupling loops to produce an orthogonal field in the vicinity of the ferromagnetic element.

REFERENCES:
patent: 3426297 (1969-02-01), Cohen
patent: 3546637 (1970-12-01), Wen
patent: 3740675 (1973-06-01), Moore et al.
patent: 3839677 (1974-10-01), Sedin

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