Cut-off space of a gyromagnetic planar disk resonator with a triplet of stubs with up and down magnetization.

Helszajn, Joseph and Sharp, John Cut-off space of a gyromagnetic planar disk resonator with a triplet of stubs with up and down magnetization. IET Microwaves, antennas and propagation. ISSN 1751-8725

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A switchable circulator may be realized by internally or externally switching or latching a suitable ferrite resonator at the junction of three transmission lines or waveguides. This paper investigates the split frequencies and therefore the quality factor of a geometry consisting of a half wave-long cylindrical cavity and another which consists of a tri-toroidal structure. The model adopted in this paper divides the surface of the resonator into up and down uniformly magnetized but unequal regions. The boundary, between the two regions, which is taken as the location of a single or a pair of switching wires, and the split counter-rotating frequencies of a typical resonator is theoretically obtained. This is done by investigating the split cut-off numbers of the related planar circuit with top and bottom electric walls and a magnetic sidewall. The magnetostatic model adopted in this paper assumes equal fluxes in the up and down magnetized regions but unequal flux densities.

Item Type: Article
Print ISSN: 1751-8725
Electronic ISSN: 1751-8733
Additional Information: This paper is a postprint of a paper submitted to and accepted for publication in IET Microwaves, antennas and propagation and is subject to Institution of Engineering and Technology Copyright. The copy of record is available at IET Digital Library
Uncontrolled Keywords: gyromagnetic resonators; ferrite switches; junction circulators; waveguide;
University Divisions/Research Centres: Faculty of Engineering, Computing and Creative Industries > School of Engineering and the Built Environment
Dewey Decimal Subjects: 600 Technology > 620 Engineering > 621 Electronic & mechanical engineering > 621.3 Electrical & electronic engineering > 621.34 Electromagnetic engineering
Library of Congress Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Item ID: 5323
Depositing User: Prof. John Sharp
Date Deposited: 24 May 2012 14:08
Last Modified: 06 Nov 2014 16:28

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