Phase in non-reciprocal gyromagnetic waveguides using multiple ferrite tiles

Joseph Helszajn*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


The non-reciprocal phase shifter in the design of the waveguide differential phase-shift circulator consists of two or four suitably magnetised ferrite tiles on the top and bottom walls of the waveguide. It may be adjusted in terms of a reciprocal condition and a non-reciprocal one. The first condition essentially fixes the geometry of a typical phase-shift section except for the thickness of each ferrite tile; the second determines the connection between the split-phase constants and the thickness of the tiles for parametric values of gyrotropy. The purpose here is to satisfy the first requirement of the two-tile geometry using a calculation and to meet the second one by having recourse to measurements. It includes some preliminary experimental data on new four- and eight-stacked ferrite tile structures. It is likely to prove of value in the design of large continuous wave power devices.

Original languageEnglish
Pages (from-to)347-355
Number of pages9
JournalIET Microwaves, Antennas and Propagation
Issue number5
Publication statusPublished - 11 Apr 2013




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