ANALYSIS OF CIRCULAR STRIPLINE RESONATORS ON NORMALLY BIASED FERRITE SUBSTRATES

Galerkin's method in the Hankel transform domain is used for determini ng the resonant frequencies of stripline circular resonators on normal ly biased ferrite substrates. The numerical results obtained show that the resonant frequencies of the resonators can be tuned by varying th e magnitude of the applied bias magnetic field. However, there is a cu toff frequency band in which resonances are not allowed owing to the e xcitation of an infinite number of magnetostatic volume-wave modes alo ng the ferrite substrates supporting the resonators.