Planar resonators with threefold symmetry with triplets of circumferential walls

Helszajn, J.; Macfarlane, I.; McKay, M.; Bunce, A.; Sharp, John T.; Hocine, Malik

doi:10.1049/ip-map:20050024

Cited by 2 publications

(1 citation statement)

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“…The specific objective is to establish a degeneracy between the first pair of degenerate poles and the first symmetric pole of the resonator. Triplets of circumferential slots have also been recently used for this purpose [1]. The effect of radial walls on a planar resonator is discussed in Ref.…”

Section: Introductionmentioning

confidence: 99%

Degeneracies between symmetric and degenerate pairs of counter-rotating modes in a disk resonator using dielectric plugs

Sharp

Helszajn²,

McKay

2007

Int J RF and Microwave Comp Aid Eng

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One means of tuning the symmetric poles or modes, without perturbing the counter-rotating family of poles or modes, of a planar disk resonator with top and bottom electric walls and a magnetic sidewall is to introduce a dielectric plug on its axis. The purpose of this paper is to investigate some intersections between the family of symmetric modes and that of pairs of degenerate counter-rotating modes in such a resonator using a commercial FE solver. The relative dielectric constant of the outer region of the resonator has been restricted to 14.1 while that of the inner region has been allowed to vary between 25 and 500. The paper includes three typical mode charts on this type of resonator as well as some standing wave solutions using an FE solver. The work has application in the design of triple pole circulators and filters. V V C 2007 Wiley Periodicals, Inc. Int J RF and Microwave CAE 17: 320-325, 2007.

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Section: Introductionmentioning

confidence: 99%