Accession Number : ADD011881

Title :   Slot Line Tunable Bandpass Filter.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC

Personal Author(s) : Mariani,E A ; Stern,R A

Report Date : 07 Aug 1985

Pagination or Media Count : 36

Abstract : A tunable bandpass filter comprising a pair of slot line resonant cavities formed in a metallic film covering the planar surface of a ferrite substrate. A magnetic biasing field of variable magnitude is generated and applied through the ferrite substrate transversely across the slot line resonant cavities. The magnetic field operates to change the electrical length of the resonant cavities due to the fact that the magnetic permeability of the ferrite material changes with the applied field. (Author)

Descriptors :   *PATENT APPLICATIONS, *SLOT LINES, *BANDPASS FILTERS, ELECTRICAL PROPERTIES, LENGTH, FERRITES, SUBSTRATES, PERMEABILITY(MAGNETIC), PLANAR STRUCTURES, SURFACES, CAVITIES, RESONANCE, MATERIALS, MAGNETIC FIELDS, METAL FILMS, TUNING

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE