Magnetically tuneable millimeter wave bandpass filter having hig

Details Magnetically tuneable millimeter wave bandpass filter having hig Magnetically tuneable millimeter wave bandpass filter having hig

1988-05-23

1989-12-19

LaRoche, Eugene R.

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333202, 333208, 3332192, 333 242, H01P 1207, H01P 1217

Patent

active

048885690

ABSTRACT:
By combining four hexagonal ferrite spheres under the same electromagnet structure, a magnetically tuneable bandpass filter can be built in waveguide yielding high off resonance isolation, while keeping insertion loss to a reasonable value. Implementations of this filter in A, Q, U, and V bands have typical off resonance isolation greater than 70 dB and insertion loss less than 13 dB for full-band tuning. The filter can be utilized as a preselector for swept-frequency signal analyzers, for example.

REFERENCES:
patent: 3268838 (1966-08-01), Matthaei

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