Multi-junction waveguide circulator without internal transitions
AssigneeEMS Technologies, Inc.
InventorAdam M. Kroening
Life of this patent
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Abstract
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.
Claims18
A ferrite circulator, comprising:
- a waveguide structure having an internal cavity, the waveguide structure including a plurality ports extending from the internal cavity;
- and
- at least two ferrite elements disposed in the internal cavity,
- wherein a leg of a first ferrite element has a first face,
- wherein a leg of an adjacent second ferrite element has a second face,
- and wherein a gap formed between the first face and the second face is no greater than {fraction (1/10)} of a waveguide wavelength at an operating frequency.
Dependencies are inferred from the claim text.