Identification of Spurious Modes in Circulators (Correspondence)

descriptionPublicationkeyboard_double_arrow_right Article 01 Jan 1971 English Publisher:Institute of Electrical and Electronics Engineers (IEEE)Journal:IEEE Transactions on Microwave Theory and Techniques, volume 19, pages 112-113 (issn: 0018-9480,

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Authors: J.B. Castillo; L.E. Davis;

doi: 10.1109/tmtt.1971.1127461

Identification of Spurious Modes in Circulators (Correspondence)

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Abstract

The spurious, and sometimes troublesome spikes in circulator characteristics are shown by analysis and experiment to be due to hybrid resonant modes of the ferrite post open-resonator structure. They can be excited by axial nonuniformities such as imperfect contact between the ferrite and the conducting walls, but they cannot exist in axially uniform structures with axially uniform excitation.

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