An improved multi-junction waveguide circulator that eliminates the transitions
to dielectric transformers and air-filled waveguides between ferrite elements is
described. The waveguide circulator in accordance with the invention can be implemented
in variations from a minimum of two ferrite circulator elements held in close proximity
to one another to any number of ferrite elements as required to achieve the desired
isolation performance or to create a switch matrix with any combination of input
and output ports. The waveguide circulator in accordance with the invention eliminates
the transitions between adjacent ferrite elements and thus reduces losses, component
size, and mass.
