Title :
More compact ferrite circulator junctions with predicted performance
Author :
Borjak, Assaad M. ; Davis, Lionel E.
Author_Institution :
Dept. of Electr. Eng. & Electron., Univ. of Manchester Inst. of Sci. & Technol., UK
fDate :
12/1/1992 12:00:00 AM
Abstract :
The analysis of two novel types of three-port junction circulator is discussed in detail, and, neglecting losses, graphs of the predicted performance of specific theoretical designs are shown. The first type of circulator is based on a ferrite ring, and it is shown that by appropriately selecting the ratio of the inner/outer radius of the ring the need for transformers can be eliminated. The second type is based on a three-port ferrite disk with two ports positioned 60 away from a middle port. This provides a more compact layout and a design for 94 GHz is presented
Keywords :
circulators (microwave); ferrite devices; microstrip components; strip line components; 94 GHz; EHF; MM-wave type; compact layout; ferrite circulator junctions; ferrite disk; ferrite ring; millimetre-wave operation; predicted performance; three-port junction; Bandwidth; Conductors; Ferrites; Impedance; Microstrip; Performance analysis; Performance loss; Permeability; Stripline; Transformers;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
