Title :
A New Type of Isolator for Millimeter-Wave Integrated Circuits Using a Nonreciprocal Traveling-Wave Resonator
Author :
Muraguchi, Masahiro ; Araki, Kiyomichi ; Naito, Yoshiyuki
Abstract :
A nonreciprocal traveling-wave resonator critically coupled to a waveguide becomes an isolator with high isolation. The dielectric image-line isolator with a magnetized ferrite pillbox as the nonreciprocal traveling-wave resonator is described. The validity of the theory is verified by experiments earned out at the 50-GHz range. The theoretical and experimental estimations of the coupling coefficient between a pillbox resonator and a straight dielectric waveguide are also included.
Keywords :
Coupling circuits; Dielectric devices; Directional couplers; Ferrites; Isolators; Millimeter wave integrated circuits; Optical resonators; Optical waveguides; Phase shifters; Rectangular waveguides;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.1982.1131336
