Title :
Simple design of x-junction microstrip circulators
Author_Institution :
University of Duisburg, Department of Electrical Engineering, ATE/FB9, Duisburg, West Germany
Abstract :
The modes used in the construction of x-junction microstrip circulators are a pair of radial TM±3,1,0 degenerate modes and a radial TM0,1,0 mode. A direct magnetic field is applied to split the degeneracy between the former modes. A micro-strip ring resonator is chosen to immediately satisfy the first two of the three circulation conditions for this type of junction. Experimental results support theoretical designs.
Keywords :
circulators (microwave); resonators; degenerate modes; magnetic field; microstrip ring resonator; x-junction microstrip circulators;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19810476
