Accession Number : ADD012943

Title :   Millimeter Wave Microscopic Circulator.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC

Personal Author(s) : Stern,Richard A ; Babbit,Richard W

Report Date : 01 Jul 1987

Pagination or Media Count : 20

Abstract : A millimeter wave microstrip Y-junction circulator is provided comprising a monolithic, wye-shaped ferrite element disposed on one surface of a section of microstrip dielectric substrate having three, Y-junction oriented sections of microstrip conductor on the same one substrate surface and an electrically conductive ground plane on the opposite substrate surface. The ferrite element has a central right prism-shaped portion with two equilateral triangular-shaped prism bases and three rectangular prism faces and three downwardly-sloping arm portions which extend radially outwardly from the prism faces of the central portion. The top base of the ferrite element central portion and the top surface of the ferrite arm portions which do not rest on the substrate are provided with microstrip conductors which cooperate with the ground plane to convey millimeter wave signals applied to the three Y-junction oriented microstrip sections on the substrate to the ferrite element central portion. A permanent magnet mounted on the ground plane beneath the bottom prism base causes the ferrite element central portion to act as a circulator to selectively couple the three microstrip sections on the substrate.

Descriptors :   *PATENT APPLICATIONS, *PRISMS(OPTICS), *FERRITES, *DIELECTRICS, *SUBSTRATES, *PERMANENT MAGNETS, *ELECTRICAL CONDUCTIVITY, *STRIP TRANSMISSION LINES, BOTTOM, ELECTRIC CONDUCTORS, GROUND LEVEL, MILLIMETER WAVES, REST, SIGNALS, SURFACES

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE