Ferrite-based Junction circulators

We have presented a novel solution for the junction circulator, where two general bounding equations are presented to satisfy the circulator operation conditions for the first time. Based on this analysis, a systematic design procedure is presented for junction circulators. The introduced circulators have shown excellent performance in terms of the wide operating bandwidth and the matching/isolation levels. In addition, we have developed a new matching methodology based on a perforated substrate. This concept is applied to two different guiding structures: the Stripline and the ridge gap waveguide. Applying the proposed invention to the Stripline confirms the ability to deploy this solution in classical applications, while the implementation of this innovation based on the ridge gap waveguide emphasizes the capability of this technique in providing compliant solutions to the future standards for mm-wave applications. The invented technique is dynamic and reconfigurable as it is proved based on the fundamental analysis of anisotropic junction among three identical guiding lines. The design outcomes of this project have been published in two journal articles, where experimental results validated the proposed innovative solution. In addition, we have patented the novel design approach through the collaboration among the Concordia University research office, the Technology transfer office, and ALEGO “The industrial partner of Concordia”. The patent is partially funded by ALEGO, where this fund has covered both the patent expenses as well as the prototype fabrication.