Resonant frequencies, Q-factor, and susceptance slope parameter of waveguide circulators using weakly magnetized open resonators
Abstract
A useful quantity in the description of junction circulators is the difference between the split frequencies of the magnetized ferrite resonator. A knowledge of this quantity allows the loaded Q-factor of a junction using a weakly magnetized resonator to be determined. This paper derives an exact description of the former quantity in the case of the open quarter-wave long (partial-height) disk resonator used in the construction of commercial turnstile waveguide circulators. This is done by employing duality between a ferrite-filled circular waveguide having ideal electric wall boundary conditions and one having ideal magnetic wall boundaries. The effect of an image wall on the open flat face of the open resonator is considered separately. The paper includes some remarks about susceptance slope parameters of disk and triangular open resonators.
- Publication:
-
IEEE Transactions on Microwave Theory Techniques
- Pub Date:
- June 1983
- DOI:
- 10.1109/TMTT.1983.1131522
- Bibcode:
- 1983ITMTT..31..434H
- Keywords:
-
- Cavity Resonators;
- Circulators (Phase Shift Circuits);
- Microwave Resonance;
- Q Factors;
- Resonant Frequencies;
- Waveguides;
- Ferrites;
- Joints (Junctions);
- Magnetization;
- Network Analysis;
- Parameterization;
- Performance Prediction;
- Reactance;
- Electronics and Electrical Engineering