Broad-band non-reciprocal microwave devices

A nonreciprocal microwave device comprising:

• a central patterned conductor;
• a pair of dielectrics, each having an aperture disposed in said dielectric and each one of said dielectrics being disposed over a surface of said patterned central conductor;
• a pair of outer conductors disposed on opposing second surfaces of said pair of dielectrics;
• a first pair of discs comprised of a ferromagnetic material said material having a saturation magnetization characteristic disposed in the respective apertures in said pair of dielectrics;
• and
• means, including a pair of members comprised of a ferrite material having the same saturation magnetization as that of the pair discs disposed adjacent said pair of ferrites, for providing a substantially uniform DC magnetic field through said ferrites.

A nonreciprocal microwave device, comprising:

• a patterned conductor;
• a dielectric supporting said patterned conductor over a first surface, said dielectric having an aperture;
• a second conductor disposed over a second surface of said dielectric;
• a disc comprised of a ferromagnetic material disposed in the aperture provided in said dielectric;
• and means, including a pair of hemi-ellipsoidial ferromagnetic members disposed over said disc, for providing a substantially uniform magnetic field in said ferrimagnetic disc.